How to Handle Tenant Requests for Modifications and Pets
Tenant requests for modifications or to keep pets are among the most common mid-tenancy situations I deal with. They’re also situations where the landlord’s response significantly affects tenant retention. A landlord who reflexively says no to every request eventually loses good tenants who take their reliability to a property that’s more accommodating. But a landlord who says yes to everything without conditions ends up with a property that’s been modified beyond recognition or smelling of animals that were never supposed to be there. The right approach is structured flexibility.
Understanding the Legal Starting Point
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Japanese civil law holds that tenants must generally use the rental property in accordance with the lease agreement and its restrictions, and must obtain landlord approval before making modifications (kousou henkou). Lease agreements typically prohibit unauthorized modifications and unauthorized keeping of pets. However, the law also places some limits on how restrictive lease terms can be u2014 for example, blanket prohibitions on any decoration of any kind have sometimes been found to be unenforceable when the decoration in question is minor and reversible.
The practical framework I use: modifications or activities that cause damage, require structural work, or significantly affect future rentability require written approval and conditions. Modifications that are cosmetic, reversible, and cause no lasting impact are generally things I permit with simple notice, without requiring formal approval each time.
Handling Modification Requests
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Common modification requests I receive and how I handle them:
- Hanging shelves or large mirrors: I permit this with the condition that the tenant fills and re-paints any holes at move-out, or accepts a corresponding deposit deduction. I’ve made this explicit in my lease so there’s no surprise at move-out.
- Installing a room divider or curtain track: Generally fine, and reversible. I approve in writing via Line message, which I save in the tenant record.
- Installing an additional air conditioner: This requires an electrical work permit in Japan and typically involves drilling through an exterior wall. I require a written request, review the proposed contractor’s credentials, and require that the work be done by a licensed technician. If approved, the unit remains the tenant’s property until move-out, at which point they either remove it or we agree on a price for me to purchase it.
- Removing a closet door or wall: This I do not approve for tenant-initiated work. If a tenant has a compelling reason and would like to propose a mutually agreed renovation, I’m willing to discuss u2014 but structural modifications require my contractor, my timeline, and my oversight.
- Changing the lock cylinder: I permit this only if the tenant provides me with a duplicate key immediately and the work is done by a locksmith. I need access to my own property in an emergency.
Pet Policy: Building a System That Works
My default policy is no pets in units where the original lease specified no pets. However, I’ve learned to be flexible in specific circumstances because good long-term tenants asking about a small pet deserve a thoughtful response, not a flat rejection.
When a current tenant requests permission to keep a pet, I consider:
- The tenant’s track record u2014 a reliable, long-term tenant who asks is a very different situation from a new tenant who asks in their first three months
- The type of pet u2014 a small cat is a very different situation from a large dog or multiple animals
- The unit’s condition u2014 some units have more cleanable surfaces (tile flooring throughout) than others
- Whether the building has other tenants who might be affected by noise or allergies
If I decide to permit a pet, I draft a pet permission addendum to the lease that specifies: the permitted animal (species, breed, and approximate size if relevant), the additional deposit required (typically one to two months’ rent for a cat, more for a dog), and the tenant’s explicit responsibility for all pet-related damage including odor treatment. I have a specific clause stating that professional odor remediation (pet deodorization) is required at move-out regardless of apparent condition, and the cost is estimated in the addendum so the tenant knows before they agree.
When to Say No u2014 and How to Say It
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Some requests are genuinely not something I can accommodate, and it’s better to say so clearly and with explanation than to give a vague non-answer. Cases where I typically decline:
- Pets in buildings where other units have pet-allergic tenants u2014 I explain this honestly and suggest the tenant might want to look for a pet-friendly building
- Major structural modifications that would affect the property’s value or future rentability
- Large dogs or multiple animals that, based on the unit size and building type, would create unavoidable noise and odor issues for neighbors
My rule for all rejections: explain the reason specifically, not vaguely. “I can’t permit this” with no explanation breeds resentment. “I can’t permit a dog in this building because the walls are thin and it would create issues for the unit below” is a reason the tenant can understand, even if they’re disappointed. Treating tenants as adults who deserve explanations is part of what makes them more likely to stay long-term, even when I occasionally say no.
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