Definition
A covenant or obligation, typically found in a lease, requiring the obligated party — most often a lessee — to maintain the leased premises in a condition of proper repair throughout the duration of the term. The obligation is continuous, not episodic: it requires that the premises be in good repair at all times, not merely that the party make repairs when prompted or when conditions become severe.
Where a lessee covenants to keep premises in repair, the duty arises at the moment the term begins and continues without interruption until the term ends. It is not a defense that the premises were already in disrepair at the commencement of the lease; the covenant, if broadly drafted, may obligate the lessee to remedy conditions that predate the tenancy. Courts have sometimes distinguished covenants to "keep in repair" from covenants to "put in repair" or to "leave in repair," with each formulation carrying distinct obligations as to timing and scope.
The obligation runs both ways in modern landlord-tenant law. Landlords may carry independent statutory or implied duties to maintain habitable conditions, separate from any express covenant by the tenant.
Common Language
Modern common usage (Wiktionary): "Keep in repair" has no standalone Wiktionary entry. In ordinary English, to "keep in repair" simply means to maintain something so that it continues to function properly — fixing what breaks, preventing deterioration.
Historical common usage (Webster's 1913): Webster's 1913 does not list "keep in repair" as a discrete entry. "Repair" as a verb means "to restore to a sound or good state after decay, injury, dilapidation, or partial destruction."
The gap between common and legal meaning is narrow but significant in one respect: everyday usage treats "keep in repair" as a general maintenance idea, triggered by visible damage or malfunction. The legal covenant is an always-on obligation — breach can occur the moment a condition of disrepair exists, regardless of whether the party is aware of it or has been given notice. That continuous-duty character is not intuitive from the plain phrase.
Common Confusion
"Keep in repair" is sometimes conflated with "repair and maintain," "leave in repair," or "put and keep in repair." These are not interchangeable:
— To "leave in repair" (or "yield up in repair") speaks to the condition of the premises at the end of the term, not throughout it.
— To "put in repair" obligates the party to bring the premises up to a repaired condition, typically at the outset, without necessarily requiring continuous maintenance.
— To "keep in repair" is the continuous, throughout-the-term standard.
Researchers reading older leases or cases must attend carefully to which phrase appears; courts have turned on these distinctions.
Why It Matters in Research
This term appears most heavily in landlord-tenant disputes, lease construction cases, and covenant-running analyses. Several research traps are worth flagging:
First, the historical sources treat the lessee's covenant to keep in repair as the operative framework, but modern landlord-tenant law has substantially redistributed repair obligations. Implied warranties of habitability (widely adopted by American courts from the 1970s onward) and tenant remedies statutes place affirmative maintenance duties on landlords that coexist with, and sometimes override, express tenant covenants. A researcher reading pre-1970 cases on "keep in repair" will find a doctrinal landscape that looks quite different from modern law.
Second, jurisdictions vary on whether a lessee's covenant to keep in repair requires the lessee to remedy pre-existing defects. Some courts have held that the covenant's scope depends entirely on the lease's language; others have applied default rules. The historical sources tend to apply the stricter rule (full continuous obligation from day one), but modern decisions are less uniform.
Third, "keep in repair" covenants intersect with casualty and destruction clauses. Where premises are destroyed or rendered uninhabitable by fire or other casualty, courts have split on whether the lessee's covenant suspends, terminates, or continues. This intersection often arises in commercial lease disputes and is a point the historical dictionaries do not address with nuance.
Fourth, in commercial real estate, researchers will encounter "triple net" lease structures where the tenant assumes broad repair obligations that functionally replicate and extend beyond the traditional "keep in repair" covenant. Modern transactional sources will use different terminology than the cases and dictionary sources.
Historical Dictionary Support
Black's Law Dictionary captures the core obligation cleanly: where a lessee is bound to keep the premises in repair, the duty is continuous throughout the term. The entry (though truncated in the available source material) reflects the traditional common-law understanding — that the covenant imposes a standing obligation, not a reactive one.
What the historical dictionary sources do not address is the significant doctrinal evolution in the twentieth century. Black's formulation is lessee-centric and assumes the classic common-law baseline that a landlord has no implied duty to repair. That baseline has been substantially eroded by statute and by judicial adoption of the implied warranty of habitability. Researchers relying solely on Black's framing will miss the modern counterpart obligations on the landlord's side.
No significant divergence appears among historical dictionary sources on the core meaning; the term was well-settled in its traditional context.
Jurisdictional Note
Most American jurisdictions now layer statutory landlord repair obligations onto the common-law framework, particularly for residential tenancies. The traditional "keep in repair" covenant remains most significant in commercial lease settings, where the implied warranty of habitability does not apply and parties more freely allocate maintenance responsibility by contract. Researchers working in residential landlord-tenant law should consult applicable state housing codes alongside any lease covenant language.
Encyclopedia Cross-Reference
The Law Mind Property Law Encyclopedia — Landlord-Tenant: Repairs and Maintenance Obligations (property_25)
The Law Mind Real Estate Transactions & Construction Encyclopedia — Construction Defect Litigation: Statutes of Limitation, Statutes of Repose, and Right to Repair Acts (realestate_97)