Mores v. Yu-Go

b. Right of Accession — Builder in good faith (Art. 448): good faith

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Case DigestChapter II — Ownership

Mores v. Yu-Go

G.R. No. 172292 · July 23, 2010 · Supreme Court

b. Right of Accession — Builder in good faith (Art. 448): good faith

Gist

The case involves a dispute between co-owners and occupants who were allowed to stay on a property for free and subsequently introduced useful improvements. After a conflict arose and the owners demanded the occupants vacate, the occupants removed the improvements (tiles, water pump, etc.) upon the owners' refusal to reimburse them, prompting a suit for damages. The Supreme Court affirmed the appellate court’s ruling that the occupants were not builders in good faith under the Civil Code.

Core Doctrine

The central doctrine is that Article 448 of the Civil Code applies only to a builder who constructs on land in the belief that he is the owner thereof; it does not apply to a lessee or a person staying on the land by mere tolerance, as such persons have no pretension of ownership and their rights regarding improvements are instead governed by the specific provisions of Article 1678.

Facts

The Yu-Go siblings (respondents) co-owned a parcel of land in Camarines Sur with a residential building situated thereon.
In 1983, the siblings allowed petitioner Antonio Mores and his wife (who was the siblings' former errand boy) to occupy the premises for free, out of gratitude for his service.
During their stay, the Spouses Mores introduced several useful improvements to the property, including a water pump, floor tiles, a concrete fence, and an additional room, to which the siblings did not then object.
Years later, a conflict arose between the parties, leading the Yu-Go siblings to demand that the Mores vacate the property and "surrender" the house together with all the improvements.
The Spouses Mores demanded reimbursement for the value of the improvements they introduced; however, the siblings refused to pay.
Before vacating the premises, the Spouses Mores removed the useful improvements they had installed, including the water pump and the tiles.
The Yu-Go siblings filed a complaint for Injunction and Damages against the Spouses Mores, seeking reimbursement for the value of the residential building they claimed was illegally "demolished" or stripped of improvements.
The RTC dismissed the complaint, ruling that the Mores were possessors in good faith who had the right to remove the improvements after the owners refused to pay their reasonable value.
The Court of Appeals (CA) reversed the RTC, ruling that the Mores were not builders in good faith under Article 448 but were instead lessees whose rights were governed by Article 1678.
The Supreme Court issued its final decision on July 23, 2010.

Issue

Whether a party occupying land by mere tolerance or under a lease-like arrangement can be characterized as a "builder in good faith" under Article 448 of the Civil Code.

Secondary issues. Whether useful improvements introduced by a lessee or a person in a similar position are governed by the rules on industrial accession (Art. 448) or the rules on lease (Art. 1678).

Ruling

Main issue. NO — occupants by tolerance are not builders in good faith. Article 448 protects only one who builds "with the belief that he is the owner thereof"; tenants and those staying by mere tolerance "cannot be said to be builders in good faith as they have no pretension to be owners of the property." The Spouses Mores acknowledged the Yu-Go siblings as the true owners, so their position was analogous to lessee and lessor. With Article 448 goes the right of retention under Article 546, which is an auxiliary right reserved to builders in good faith and not available to lessees.

Secondary issues. Article 1678 governs. The rules on industrial accession "do not apply where one's only interest is that of a lessee under a rental contract; otherwise, it would always be in the power of the tenant to 'improve' his landlord out of his property." Under Article 1678 the lessor holds the option: on termination he may pay the lessee "one-half of the value of the improvements at that time," and if he refuses, the lessee may "remove the improvements, even though the principal thing may suffer damage thereby." Since the Yu-Go siblings never offered the half-value, the Mores spouses are entitled to remove what they built.

"WHEREFORE, we GRANT the petition. We AFFIRM with MODIFICATION the Decision of the Court of Appeals promulgated on 26 August 2005 as well as the Resolution promulgated on 14 March 2006 in CA-G.R. CV No. 76076. Article 1678 of the Civil Code is applicable to the present case. The award of moral damages worth ₱100,000 to the Yu siblings is deleted."

Ratio

The Court’s reasoning is anchored on the strict legal definition of a Builder in Good Faith.
Under Philippine law, the protections of Article 448 are reserved for those who build on land "with the belief that he is the owner thereof."
The Court ruled that tenants or individuals staying on a property by mere tolerance, such as the Spouses Mores, "cannot be said to be builders in good faith as they have no pretension to be owners of the property."
Because the Mores recognized the Yu-Go siblings as the true owners, their relationship was analogous to that of a lessor and lessee.
Therefore, the Court held that Article 1678 of the Civil Code is the controlling provision.
Under this article, if the lessee makes useful improvements in good faith, the lessor, upon termination of the lease, has the option to pay the lessee "one-half of the value of the improvements at that time."
If the lessor refuses to reimburse this amount, the lessee is granted the right to "remove the improvements, even though the principal thing may suffer damage thereby."
Applying this to the facts, since the Yu-Go siblings refused to offer the half-value reimbursement mandated by Art. 1678, the Spouses Mores were legally entitled to remove the improvements they had introduced.

Doctrine

Exclusivity of Art. 448: "Indeed, full reimbursement of useful improvements and retention of the premises until reimbursement is made applies only to a possessor in good faith, i.e., one who builds on land with the belief that he is the owner thereof."
Inapplicability to Lessees: The rule of industrial accession (Art. 448) "does not apply where one’s only interest is that of a lessee under a rental contract; otherwise, it would always be in the power of the tenant to 'improve' his landlord out of his property."
Lessor’s Option (Art. 1678): The right of appropriation belongs to the lessor, but it is contingent upon paying 50% of the value. Failure to make this offer grants the lessee the right of removal.
Right of Retention (Art. 546): This right is not available to lessees or tenants; it is an auxiliary right exclusively for builders in good faith under Art. 448.

While the Court has occasionally applied Art. 448 to non-owners by "special exception" (e.g., when improvements are made with the owner's express consent), this case clarifies that such exceptions do not apply where the parties’ relationship is clearly established as one of lease or occupancy by tolerance.

Full Digest — Recitation Format

I. Gist and Central Doctrine

Relationship to requested topic: REJECTED. The case involves a dispute between co-owners and occupants who were allowed to stay on a property for free and subsequently introduced useful improvements. After a conflict arose and the owners demanded the occupants vacate, the occupants removed the improvements (tiles, water pump, etc.) upon the owners' refusal to reimburse them, prompting a suit for damages. The Supreme Court affirmed the appellate court’s ruling that the occupants were not builders in good faith under the Civil Code. The central doctrine is that Article 448 of the Civil Code applies only to a builder who constructs on land in the belief that he is the owner thereof; it does not apply to a lessee or a person staying on the land by mere tolerance, as such persons have no pretension of ownership and their rights regarding improvements are instead governed by the specific provisions of Article 1678.

II. Chronological Narration of Material Facts

The Yu-Go siblings (respondents) co-owned a parcel of land in Camarines Sur with a residential building situated thereon.
In 1983, the siblings allowed petitioner Antonio Mores and his wife (who was the siblings' former errand boy) to occupy the premises for free, out of gratitude for his service.
During their stay, the Spouses Mores introduced several useful improvements to the property, including a water pump, floor tiles, a concrete fence, and an additional room, to which the siblings did not then object.
Years later, a conflict arose between the parties, leading the Yu-Go siblings to demand that the Mores vacate the property and "surrender" the house together with all the improvements.
The Spouses Mores demanded reimbursement for the value of the improvements they introduced; however, the siblings refused to pay.
Before vacating the premises, the Spouses Mores removed the useful improvements they had installed, including the water pump and the tiles.
The Yu-Go siblings filed a complaint for Injunction and Damages against the Spouses Mores, seeking reimbursement for the value of the residential building they claimed was illegally "demolished" or stripped of improvements.
The RTC dismissed the complaint, ruling that the Mores were possessors in good faith who had the right to remove the improvements after the owners refused to pay their reasonable value.
The Court of Appeals (CA) reversed the RTC, ruling that the Mores were not builders in good faith under Article 448 but were instead lessees whose rights were governed by Article 1678.
The Supreme Court issued its final decision on July 23, 2010.

III. Arguments of the Parties

A. Petitioner (Spouses Mores)

Petitioners argued that they were possessors in good faith and in the concept of owner. Consequently, they maintained they were entitled to the fruits received before the legal interruption of possession and should be reimbursed for useful expenses or the increase in value of the property under Articles 546 and 547 of the Civil Code.

B. Respondent (Yu-Go Siblings)

Respondents contended that the Mores acted in bad faith by removing the improvements from the principal building. They argued that the occupants were obligated to return the house in its improved state and were liable for damages resulting from the "demolition" of the useful improvements.

IV. Issues

A. MAIN ISSUE

Whether a party occupying land by mere tolerance or under a lease-like arrangement can be characterized as a "builder in good faith" under Article 448 of the Civil Code.

B. SECONDARY ISSUES

Whether useful improvements introduced by a lessee or a person in a similar position are governed by the rules on industrial accession (Art. 448) or the rules on lease (Art. 1678).

V. Ruling / Disposition

A. MAIN ISSUE

NO — occupants by tolerance are not builders in good faith. Article 448 protects only one who builds "with the belief that he is the owner thereof"; tenants and those staying by mere tolerance "cannot be said to be builders in good faith as they have no pretension to be owners of the property." The Spouses Mores acknowledged the Yu-Go siblings as the true owners, so their position was analogous to lessee and lessor. With Article 448 goes the right of retention under Article 546, which is an auxiliary right reserved to builders in good faith and not available to lessees.

B. SECONDARY ISSUES

Article 1678 governs. The rules on industrial accession "do not apply where one's only interest is that of a lessee under a rental contract; otherwise, it would always be in the power of the tenant to 'improve' his landlord out of his property." Under Article 1678 the lessor holds the option: on termination he may pay the lessee "one-half of the value of the improvements at that time," and if he refuses, the lessee may "remove the improvements, even though the principal thing may suffer damage thereby." Since the Yu-Go siblings never offered the half-value, the Mores spouses are entitled to remove what they built.

"WHEREFORE, we GRANT the petition. We AFFIRM with MODIFICATION the Decision of the Court of Appeals promulgated on 26 August 2005 as well as the Resolution promulgated on 14 March 2006 in CA-G.R. CV No. 76076. Article 1678 of the Civil Code is applicable to the present case. The award of moral damages worth ₱100,000 to the Yu siblings is deleted."

VI. Ratio Decidendi and Doctrines

A. Ratio Decidendi

The Court’s reasoning is anchored on the strict legal definition of a Builder in Good Faith.
Under Philippine law, the protections of Article 448 are reserved for those who build on land "with the belief that he is the owner thereof."
The Court ruled that tenants or individuals staying on a property by mere tolerance, such as the Spouses Mores, "cannot be said to be builders in good faith as they have no pretension to be owners of the property."
Because the Mores recognized the Yu-Go siblings as the true owners, their relationship was analogous to that of a lessor and lessee.
Therefore, the Court held that Article 1678 of the Civil Code is the controlling provision.
Under this article, if the lessee makes useful improvements in good faith, the lessor, upon termination of the lease, has the option to pay the lessee "one-half of the value of the improvements at that time."
If the lessor refuses to reimburse this amount, the lessee is granted the right to "remove the improvements, even though the principal thing may suffer damage thereby."
Applying this to the facts, since the Yu-Go siblings refused to offer the half-value reimbursement mandated by Art. 1678, the Spouses Mores were legally entitled to remove the improvements they had introduced.

B. Doctrines/Rules

Exclusivity of Art. 448: "Indeed, full reimbursement of useful improvements and retention of the premises until reimbursement is made applies only to a possessor in good faith, i.e., one who builds on land with the belief that he is the owner thereof."
Inapplicability to Lessees: The rule of industrial accession (Art. 448) "does not apply where one’s only interest is that of a lessee under a rental contract; otherwise, it would always be in the power of the tenant to 'improve' his landlord out of his property."
Lessor’s Option (Art. 1678): The right of appropriation belongs to the lessor, but it is contingent upon paying 50% of the value. Failure to make this offer grants the lessee the right of removal.
Right of Retention (Art. 546): This right is not available to lessees or tenants; it is an auxiliary right exclusively for builders in good faith under Art. 448.

C. Limitations/Exceptions

While the Court has occasionally applied Art. 448 to non-owners by "special exception" (e.g., when improvements are made with the owner's express consent), this case clarifies that such exceptions do not apply where the parties’ relationship is clearly established as one of lease or occupancy by tolerance.

D. Topic Integration

The relationship is REJECTED.
This case serves as a fundamental "gatekeeper" authority for the subtopic of "Good Faith" under Article 448.
It teaches that "Good Faith" in the context of industrial accession requires more than just "permission to build"
It requires a subjective and objective belief in Ownership.
By distinguishing the Mores from builders in good faith, the Court protects the owner's jus vindicandi from being diluted by tenants who might otherwise use useful improvements to claim a right of retention or full reimbursement that the law did not intend to grant them.

VII. Separate Opinions

NOT IN RECORD (Decision was unanimous by the Second Division).

Cited Laws & Provisions

Every statute, rule, and issuance the decision turns on — the text as written, and the work it does in this case.

Civil Code

Article 448, Civil Code

Civil Code of the Philippines (R.A. No. 386), Book II (Property, Ownership, and Its Modifications), Title II (Ownership), Chapter 2 (Right of Accession), Section 2 (Right of Accession With Respect to Immovable Property)

The owner of the land on which anything has been built, sown or planted in good faith, shall have the right to appropriate as his own the works, sowing or planting, after payment of the indemnity provided for in articles 546 and 548, or to oblige the one who built or planted to pay the price of the land, and the one who sowed, the proper rent. However, the builder or planter cannot be obliged to buy the land if its value is considerably more than that of the building or trees. In such case, he shall pay reasonable rent, if the owner of the land does not choose to appropriate the building or trees after proper indemnity. The parties shall agree upon the terms of the lease and in case of disagreement, the court shall fix the terms thereof. (361a)

Why it is cited here

The article the improvers invoked and could not reach, and the reason is a limit built into its opening words.

It speaks of one who has built "on the land of another" in good faith — and the settled reading is that it applies only to a builder who constructs believing he is the owner of the land. Good faith here is not merely an absence of bad motive; it is a claim of ownership honestly held.

That excludes two familiar classes at the threshold. A lessee knows the land is not his — indeed his whole position depends on its being someone else's. A person occupying by mere tolerance knows the same. Neither builds under any illusion of ownership, so neither is a builder in good faith however substantial the improvements or however cordial the arrangement.

The point generalises usefully: Article 448 resolves a conflict of ownership claims. Where the improver never claimed to own the land, there is no conflict for it to resolve.

Civil Code

Article 1678, Civil Code

Civil Code of the Philippines (R.A. No. 386), Book IV (Obligations and Contracts), Title VIII (Lease), Chapter 2 (Lease of Rural and Urban Lands), Section 2 (Rights and Obligations of the Lessor and the Lessee)

If the lessee makes, in good faith, useful improvements which are suitable to the use for which the lease is intended, without altering the form or substance of the property leased, the lessor upon the termination of the lease shall pay the lessee one-half of the value of the improvements at that time. Should the lessor refuse to reimburse said amount, the lessee may remove the improvements, even though the principal thing may suffer damage thereby. He shall not, however, cause any more impairment upon the property leased than is necessary.

With regard to ornamental expenses, the lessee shall not be entitled to any reimbursement, but he may remove the ornamental objects, provided no damage is caused to the principal thing, and the lessor does not choose to retain them by paying their value at the time the lease is extinguished. (n)

Why it is cited here

The provision that actually governs a lessee's improvements, and it is markedly less generous than Article 448.

Where a lessee makes useful improvements in good faith and suitable to the use of the lease without altering the form or substance of the property, the lessor on termination shall pay one-half of the value of the improvements. If the lessor refuses, the lessee may remove them, "even though the principal thing may suffer damage thereby" — but must not cause more damage than necessary.

Set the two regimes side by side, because the comparison is the lesson.

Article 448 — full indemnity, plus a right of retention, plus the possibility of acquiring the land. Article 1678 — half the value, no right of retention, and if the lessor declines, only a right to remove.

That gap is why parties fight so hard over the characterisation, and why an improver who entered by lease or by tolerance is in a much weaker position than one who built under a mistaken belief of ownership.

Civil Code

Article 546, Civil Code

Civil Code of the Philippines (R.A. No. 386), Book II (Property, Ownership, and Its Modifications), Title V (Possession), Chapter 3 (Effects of Possession)

Necessary expenses shall be refunded to every possessor; but only the possessor in good faith may retain the thing until he has been reimbursed therefor.

Useful expenses shall be refunded only to the possessor in good faith with the same right of retention, the person who has defeated him in the possession having the option of refunding the amount of the expenses or of paying the increase in value which the thing may have acquired by reason thereof. (453a)

Why it is cited here

The general rule on expenses, included because it still gives the excluded improver something.

"Necessary expenses shall be refunded to every possessor" — every possessor, good faith or bad — "but only the possessor in good faith may retain the thing until he has been reimbursed." Useful expenses go only to the possessor in good faith.

So even someone outside Article 448 recovers what he spent to preserve the property. What he loses is reimbursement for improvements that merely made it better, and the retention right that would have let him stay until paid.

Cited laws & provisions

Article 448, Civil Code

Civil Code

Why it is cited here

The article the improvers invoked and could not reach, and the reason is a limit built into its opening words.

The point generalises usefully: Article 448 resolves a conflict of ownership claims. Where the improver never claimed to own the land, there is no conflict for it to resolve.

Full entry below ↓

Article 1678, Civil Code

Civil Code

Why it is cited here

The provision that actually governs a lessee's improvements, and it is markedly less generous than Article 448.

Set the two regimes side by side, because the comparison is the lesson.

Full entry below ↓

Article 546, Civil Code

Civil Code

Civil Code of the Philippines (R.A. No. 386), Book II (Property, Ownership, and Its Modifications), Title V (Possession), Chapter 3 (Effects of Possession)

Necessary expenses shall be refunded to every possessor; but only the possessor in good faith may retain the thing until he has been reimbursed therefor.

Why it is cited here

The general rule on expenses, included because it still gives the excluded improver something.

Full entry below ↓

Facts

The Yu-Go siblings (respondents) co-owned a parcel of land in Camarines Sur with a residential building situated thereon.
In 1983, the siblings allowed petitioner Antonio Mores and his wife (who was the siblings' former errand boy) to occupy the premises for free, out of gratitude for his service.
During their stay, the Spouses Mores introduced several useful improvements to the property, including a water pump, floor tiles, a concrete fence, and an additional room, to which the siblings did not then object.
Years later, a conflict arose between the parties, leading the Yu-Go siblings to demand that the Mores vacate the property and "surrender" the house together with all the improvements.
The Spouses Mores demanded reimbursement for the value of the improvements they introduced; however, the siblings refused to pay.
Before vacating the premises, the Spouses Mores removed the useful improvements they had installed, including the water pump and the tiles.
The Yu-Go siblings filed a complaint for Injunction and Damages against the Spouses Mores, seeking reimbursement for the value of the residential building they claimed was illegally "demolished" or stripped of improvements.
The RTC dismissed the complaint, ruling that the Mores were possessors in good faith who had the right to remove the improvements after the owners refused to pay their reasonable value.
The Court of Appeals (CA) reversed the RTC, ruling that the Mores were not builders in good faith under Article 448 but were instead lessees whose rights were governed by Article 1678.
The Supreme Court issued its final decision on July 23, 2010.

Issue

Whether a party occupying land by mere tolerance or under a lease-like arrangement can be characterized as a "builder in good faith" under Article 448 of the Civil Code.

Ruling

"WHEREFORE, we GRANT the petition. We AFFIRM with MODIFICATION the Decision of the Court of Appeals promulgated on 26 August 2005 as well as the Resolution promulgated on 14 March 2006 in CA-G.R. CV No. 76076. Article 1678 of the Civil Code is applicable to the present case. The award of moral damages worth ₱100,000 to the Yu siblings is deleted."

Ratio

The Court’s reasoning is anchored on the strict legal definition of a Builder in Good Faith.
Under Philippine law, the protections of Article 448 are reserved for those who build on land "with the belief that he is the owner thereof."
The Court ruled that tenants or individuals staying on a property by mere tolerance, such as the Spouses Mores, "cannot be said to be builders in good faith as they have no pretension to be owners of the property."
Because the Mores recognized the Yu-Go siblings as the true owners, their relationship was analogous to that of a lessor and lessee.
Therefore, the Court held that Article 1678 of the Civil Code is the controlling provision.
Under this article, if the lessee makes useful improvements in good faith, the lessor, upon termination of the lease, has the option to pay the lessee "one-half of the value of the improvements at that time."
If the lessor refuses to reimburse this amount, the lessee is granted the right to "remove the improvements, even though the principal thing may suffer damage thereby."
Applying this to the facts, since the Yu-Go siblings refused to offer the half-value reimbursement mandated by Art. 1678, the Spouses Mores were legally entitled to remove the improvements they had introduced.

Doctrine

Exclusivity of Art. 448: "Indeed, full reimbursement of useful improvements and retention of the premises until reimbursement is made applies only to a possessor in good faith, i.e., one who builds on land with the belief that he is the owner thereof."
Inapplicability to Lessees: The rule of industrial accession (Art. 448) "does not apply where one’s only interest is that of a lessee under a rental contract; otherwise, it would always be in the power of the tenant to 'improve' his landlord out of his property."
Lessor’s Option (Art. 1678): The right of appropriation belongs to the lessor, but it is contingent upon paying 50% of the value. Failure to make this offer grants the lessee the right of removal.
Right of Retention (Art. 546): This right is not available to lessees or tenants; it is an auxiliary right exclusively for builders in good faith under Art. 448.

Full Digest — Recitation Format

I. Gist and Central Doctrine

II. Chronological Narration of Material Facts

The Yu-Go siblings (respondents) co-owned a parcel of land in Camarines Sur with a residential building situated thereon.
In 1983, the siblings allowed petitioner Antonio Mores and his wife (who was the siblings' former errand boy) to occupy the premises for free, out of gratitude for his service.
During their stay, the Spouses Mores introduced several useful improvements to the property, including a water pump, floor tiles, a concrete fence, and an additional room, to which the siblings did not then object.
Years later, a conflict arose between the parties, leading the Yu-Go siblings to demand that the Mores vacate the property and "surrender" the house together with all the improvements.
The Spouses Mores demanded reimbursement for the value of the improvements they introduced; however, the siblings refused to pay.
Before vacating the premises, the Spouses Mores removed the useful improvements they had installed, including the water pump and the tiles.
The Yu-Go siblings filed a complaint for Injunction and Damages against the Spouses Mores, seeking reimbursement for the value of the residential building they claimed was illegally "demolished" or stripped of improvements.
The RTC dismissed the complaint, ruling that the Mores were possessors in good faith who had the right to remove the improvements after the owners refused to pay their reasonable value.
The Court of Appeals (CA) reversed the RTC, ruling that the Mores were not builders in good faith under Article 448 but were instead lessees whose rights were governed by Article 1678.
The Supreme Court issued its final decision on July 23, 2010.

III. Arguments of the Parties

A. Petitioner (Spouses Mores)

B. Respondent (Yu-Go Siblings)

IV. Issues

A. MAIN ISSUE

Whether a party occupying land by mere tolerance or under a lease-like arrangement can be characterized as a "builder in good faith" under Article 448 of the Civil Code.

B. SECONDARY ISSUES

Whether useful improvements introduced by a lessee or a person in a similar position are governed by the rules on industrial accession (Art. 448) or the rules on lease (Art. 1678).

V. Ruling / Disposition

A. MAIN ISSUE

B. SECONDARY ISSUES

VI. Ratio Decidendi and Doctrines

A. Ratio Decidendi

The Court’s reasoning is anchored on the strict legal definition of a Builder in Good Faith.
Under Philippine law, the protections of Article 448 are reserved for those who build on land "with the belief that he is the owner thereof."
The Court ruled that tenants or individuals staying on a property by mere tolerance, such as the Spouses Mores, "cannot be said to be builders in good faith as they have no pretension to be owners of the property."
Because the Mores recognized the Yu-Go siblings as the true owners, their relationship was analogous to that of a lessor and lessee.
Therefore, the Court held that Article 1678 of the Civil Code is the controlling provision.
Under this article, if the lessee makes useful improvements in good faith, the lessor, upon termination of the lease, has the option to pay the lessee "one-half of the value of the improvements at that time."
If the lessor refuses to reimburse this amount, the lessee is granted the right to "remove the improvements, even though the principal thing may suffer damage thereby."
Applying this to the facts, since the Yu-Go siblings refused to offer the half-value reimbursement mandated by Art. 1678, the Spouses Mores were legally entitled to remove the improvements they had introduced.

B. Doctrines/Rules

Exclusivity of Art. 448: "Indeed, full reimbursement of useful improvements and retention of the premises until reimbursement is made applies only to a possessor in good faith, i.e., one who builds on land with the belief that he is the owner thereof."
Inapplicability to Lessees: The rule of industrial accession (Art. 448) "does not apply where one’s only interest is that of a lessee under a rental contract; otherwise, it would always be in the power of the tenant to 'improve' his landlord out of his property."
Lessor’s Option (Art. 1678): The right of appropriation belongs to the lessor, but it is contingent upon paying 50% of the value. Failure to make this offer grants the lessee the right of removal.
Right of Retention (Art. 546): This right is not available to lessees or tenants; it is an auxiliary right exclusively for builders in good faith under Art. 448.

C. Limitations/Exceptions

While the Court has occasionally applied Art. 448 to non-owners by "special exception" (e.g., when improvements are made with the owner's express consent), this case clarifies that such exceptions do not apply where the parties’ relationship is clearly established as one of lease or occupancy by tolerance.

D. Topic Integration

The relationship is REJECTED.
This case serves as a fundamental "gatekeeper" authority for the subtopic of "Good Faith" under Article 448.
It teaches that "Good Faith" in the context of industrial accession requires more than just "permission to build"
It requires a subjective and objective belief in Ownership.
By distinguishing the Mores from builders in good faith, the Court protects the owner's jus vindicandi from being diluted by tenants who might otherwise use useful improvements to claim a right of retention or full reimbursement that the law did not intend to grant them.

VII. Separate Opinions

NOT IN RECORD (Decision was unanimous by the Second Division).