Disability, Reasonable Accommodation and Reasonable Modification

The simplest exam distinction is this: a reserved parking exception is usually an accommodation; installing a ramp is usually a modification. The real analysis also asks who is protected, what information may be requested, who pays, whether the response was prompt and whether an effective alternative exists.

What is the difference between an accommodation and a modification?

Do not decide by the label used in a request. A resident may call a ramp an accommodation, but the structural change makes it a modification under the federal distinction. A single situation can require both. A resident might need permission to alter a walkway and an exception to a rule governing where mobility devices may be stored.

Official source map

The controlling federal rule begins in 42 U.S.C. section 3604(f). It prohibits disability-based denial and unequal terms. It also defines discrimination to include refusing a necessary reasonable modification or reasonable accommodation and failing to meet specified design and construction requirements.

42 U.S.C. section 3602 supplies the federal definitions. The statute uses the word “handicap,” while HUD, the U.S. Department of Justice and this guide generally use “disability.”

The current DOJ guidance index continues to list the joint federal statements on reasonable accommodations and reasonable modifications. Those question-and-answer documents explain requests, verification, costs, delays, alternatives and physical-work conditions.

New York adds a state layer through Executive Law section 296. Federal financial assistance, local law and other disability statutes can add duties beyond the Fair Housing Act baseline. This article teaches the federal accommodation and modification framework and flags where a New York transaction needs broader review.

Who has a disability under the federal Fair Housing Act?

The federal definition covers a person who:

1. has a physical or mental impairment that substantially limits one or more major life activities
2. has a record of such an impairment
3. is regarded as having such an impairment

Major life activities can include seeing, hearing, walking, breathing, performing manual tasks, caring for oneself, learning and speaking. The list is not limited to visible conditions.

The protection can involve the buyer or renter, a person who lives or will live in the dwelling, or a person associated with the buyer or renter. A parent can therefore request a change needed by a child with a disability. A tenant does not lose protection because the condition is not apparent to a salesperson.

The statutory definition excludes current illegal use of or addiction to a controlled substance. That exclusion does not convert every history of substance-use treatment or every use of prescribed medication into a lawful reason for denial. Apply the current statutory definition to the facts given.

What makes an accommodation request valid?

A person makes a housing accommodation request by communicating that a change, exception or adjustment is needed because of a disability. The person does not need to say “reasonable accommodation,” cite the Fair Housing Act or use the housing provider's preferred form.

The request can be oral or written. It can come from the person with a disability or from someone acting on that person's behalf. It can be made before tenancy, during tenancy or when a housing issue develops.

A written request can reduce misunderstanding, but a housing provider cannot ignore a clear oral request solely because a form was not completed.

Three elements to identify

For exam analysis, look for:

1. A qualifying disability. The person meets the statutory definition.
2. A requested change. The provider understands, or reasonably should understand, what rule, policy, practice or service needs adjustment.
3. A nexus. There is an identifiable relationship between the disability and the requested change.

If the facts do not establish the nexus, the provider may seek the limited information needed to evaluate it. The provider should not use that step to demand the person's entire medical history.

What information may a housing provider request?

The permitted inquiry depends on what is already apparent or known.

The joint federal guidance says verification can come from a doctor or other medical professional, a peer support group, a nonmedical service agency, a reliable third party in a position to know, or sometimes the individual. Detailed medical records are usually unnecessary.

This is an information-minimization rule. Ask for what is needed to decide the request, not for a diagnosis file out of curiosity. Store any sensitive information according to the brokerage or housing provider's privacy procedure and limit access to people who need it for the decision.

Worked example: accessible mailbox

A tenant tells the manager that a mobility disability prevents her from reaching the assigned mailbox and asks for a lower box. She does not use a form.

The statement identifies a disability-related barrier and a requested change. The manager must consider it even though it was oral. If the disability and need are apparent, demanding broad medical records would not advance the decision.

How should a housing provider evaluate an accommodation?

Use a disciplined sequence:

1. Identify the exact rule, policy, practice or service at issue.
2. Confirm the disability and nexus only to the extent they are not apparent or known.
3. Decide whether the requested change is reasonable and effective.
4. If the request presents a genuine burden or fundamental alteration, discuss an effective alternative.
5. Respond promptly and record the decision in clear language.

The accommodation does not have to be the provider's preferred solution. It must give the person an equal opportunity to use and enjoy the dwelling. Conversely, a requester is not automatically entitled to the exact option requested when another effective, reasonable option meets the disability-related need.

Undue burden and fundamental alteration

The joint federal guidance explains that a request may be unreasonable if it imposes an undue financial and administrative burden or fundamentally alters the nature of the provider's operations. This is a fact-specific analysis, not a phrase to place in a form denial.

Relevant facts can include cost, the provider's financial resources, the benefit to the requester and the availability of a less expensive effective alternative. A fundamental alteration changes the essential nature of the operation rather than merely requiring an exception to an ordinary rule.

When the requested option is not reasonable, the provider should discuss whether another accommodation can meet the need. An interactive conversation is often the clearest path to an effective solution.

Worked example: assigned parking

A resident with a mobility disability asks for a reserved space close to the accessible entrance. The building normally uses unassigned parking.

The requested exception changes a parking policy, so it is an accommodation. The provider should evaluate the connection between the mobility limitation and the closer space. Charging the resident a premium merely for the disability-related exception would undermine equal opportunity.

How quickly must an accommodation request be handled?

The Fair Housing Act does not create one universal number of calendar days for every request. The joint federal guidance requires a prompt response and explains that an undue delay may be treated as a failure to provide the accommodation.

Speed depends on the facts. A request affecting immediate entry to a home can require faster action than a complex request that needs limited verification or contractor review. Silence is not a neutral process.

A strong housing procedure records:

• the date and form of the request
• the barrier the person identified
• what limited information, if any, was requested
• each follow-up date
• the decision and reason
• any effective alternative discussed
• implementation and completion dates

The purpose is not to build a defensive file while delaying the resident. It is to make the process visible, timely and consistent.

What is a reasonable modification?

A reasonable modification is a structural change to existing premises occupied or to be occupied by a person with a disability when the change may be necessary for full enjoyment of the premises.

Examples can include:

• widening a doorway
• installing bathroom grab bars
• lowering kitchen cabinets
• adding a ramp to a primary entrance
• changing doorknobs to lever handles
• altering a walkway to reach a common area

The federal duty can apply to the interior, exterior, public-use area or common-use area. A condominium or homeowners' association can also receive a modification request.

The requester must show an identifiable connection between the disability and the proposed structural change. A desired renovation unrelated to a disability is not converted into a required modification by attaching the word “reasonable.”

Worked example: lever handles

A tenant's arthritis substantially limits the use of her hands. She asks to replace round doorknobs with lever handles.

The physical change is a modification. The connection is clear because the handles address the difficulty created by the impairment. Under the federal baseline, the provider must permit a reasonable installation while the tenant generally pays for it.

Who pays for a reasonable modification?

Under the Fair Housing Act alone, the person with a disability generally pays for the physical modification. The housing provider must permit a qualifying modification and may impose reasonable conditions concerning proper workmanship and required building permits.

For a rental interior, the provider may sometimes require the tenant to agree to restore the interior to its previous condition when restoration is reasonable, excluding ordinary wear and tear. The provider cannot automatically demand restoration of every accessibility feature. The joint modification guidance uses the example that removing interior grab bars may be reasonable, while leaving reinforced bathroom walls in place does not affect a later tenant's use.

If restoration will be required, the federal regulation permits a reasonable escrow arrangement in appropriate circumstances. The amount and interest treatment must follow the federal rule. A provider should not invent a large deposit unrelated to the likely restoration cost.

When another law changes the cost rule

Section 504 of the Rehabilitation Act applies to recipients of federal financial assistance and can impose greater obligations, including provider payment for some structural changes. Public housing, federally assisted housing, state law and local law can therefore change the result.

For exam questions, use the law named in the facts. For a live transaction, do not state “the tenant always pays” until every applicable funding source and law has been checked.

Can a provider require plans, permits or a contractor?

A housing provider may require a reasonable description of the proposed work, reasonable assurance that it will be completed in a workmanlike manner and legally required permits. Conditions should be tied to the actual work and applied without using the approval process to block access.

The joint federal guidance explains that a provider may generally require a licensed contractor when state or local law requires one. When no law requires licensing, a provider should not reject a qualified contractor merely because the provider prefers someone else.

For an exterior change, a provider may have a legitimate interest in design consistency. A reasonable condition concerning appearance can be acceptable if it does not increase cost so much that it prevents the modification and if the alternative still meets the disability-related need.

Worked example: entrance ramp design

A tenant needs a ramp to reach the main entrance. The proposed design is functional but conflicts with the building's exterior color standard. The provider offers a comparable material in the standard color at no extra cost or delay.

The appearance condition may be reasonable because the alternative still provides access without shifting added cost to the tenant. Refusing every ramp to preserve an unaltered entrance would present a very different analysis.

How do direct-threat concerns fit the analysis?

Section 3604(f)(9) says the disability provisions do not require making a dwelling available to a person whose tenancy would constitute a direct threat to others' health or safety or would result in substantial physical damage to others' property.

The exception is not a license to act on fear, diagnosis or stereotype. Current DOJ materials call for an individualized assessment based on reliable objective evidence. The analysis should consider the nature, duration and severity of the risk, the probability of harm and whether an accommodation can reduce or eliminate the risk.

A housing provider should not skip the accommodation question. If a reasonable change can address the documented risk, a flat disability-based denial may still be unlawful.

Where do assistance animals fit?

An exception to a no-pets rule for an assistance animal is generally analyzed as a reasonable accommodation because the rule changes while the building does not. An assistance animal is not automatically treated as an ordinary pet for fees and restrictions.

The definitions, documentation paths and distinction between service animals and other assistance animals require their own careful treatment. Use the separate assistance animals versus service animals in housing guide for that analysis.

What should a New York salesperson do when a request is made?

A salesperson should recognize and route the request, not diagnose the person or make an unauthorized legal decision.

1. Listen for a disability-related request even when no legal phrase is used.
2. Write down the person's own description accurately and confirm where it should be sent.
3. Forward it promptly to the supervising broker, owner or designated decision-maker.
4. Do not promise approval, announce denial or demand medical records on your own.
5. Do not describe an accommodation as a favor or use it to negotiate a higher price.
6. Keep sensitive information private and out of ordinary marketing notes.
7. Follow up so the request does not disappear between the salesperson and property manager.

If the property is in New York, compare the federal rule with the New York Human Rights Law and any applicable local law. The state's protected-class and housing provisions are explained in New York State housing protections beyond federal law.

For a complete topic review, open the Human Rights and Fair Housing study guide. Then apply the distinction in the free practice sampler.

Eight exam-style scenarios

1. A tenant asks to keep medication refrigerated despite a rule against personal appliances. A disability-related rule exception is an accommodation.
2. A wheelchair user asks to widen the unit's bathroom door. The structural work is a modification.
3. A manager ignores an oral request because it was not on the company form. No special form or phrase is required for a recognizable request.
4. A visible wheelchair user asks for a ramp, and the provider demands complete medical records. When disability and need are apparent, broad verification is ordinarily unnecessary.
5. A resident with a nonapparent disability asks for a policy exception but gives no connection. The provider may request reliable, limited information needed to verify disability and nexus.
6. A provider cannot grant the exact requested option without a fundamental change but refuses to discuss alternatives. The provider should explore an effective reasonable alternative.
7. A tenant wants a decorative kitchen renovation unrelated to the disability. The missing nexus prevents the preference from becoming a required modification.
8. A federally assisted property tells every tenant to pay for every structural accessibility change. The answer may change under Section 504, so “tenant always pays” is too broad.

Common misconceptions

“Accommodation and modification mean the same thing”

Incorrect. An accommodation changes a rule, policy, practice or service. A modification changes the physical premises.

“The request must be written and use legal language”

Incorrect. A clear oral request can trigger review, and the person does not need to cite the Fair Housing Act.

“A housing provider can always demand a diagnosis”

Incorrect. The information allowed depends on whether the disability and need are apparent or already known. Detailed medical records are usually unnecessary.

“The requester always receives the exact option requested”

Incorrect. The solution must be effective and reasonable. A different effective option may satisfy the duty when the original request imposes an undue burden or fundamental alteration.

“The landlord always pays for structural work”

Incorrect under the Fair Housing Act baseline. The person with a disability generally pays for a modification, but Section 504 or another law can allocate cost differently.

“The tenant always pays for every disability-related change”

Also incorrect. A policy accommodation is not the same as tenant-funded construction, and other laws can require provider payment.

“No response means the request is still under review”

Not indefinitely. An undue delay can amount to a failure to provide a reasonable accommodation.

Frequently asked questions

What is a reasonable accommodation in housing?

It is a change, exception or adjustment to a rule, policy, practice or service that may be necessary to give a person with a disability an equal opportunity to use and enjoy a dwelling.

What is a reasonable modification in housing?

It is a structural change to existing premises that may be necessary for a person with a disability to enjoy the premises fully. It can affect a unit, exterior or common area.

Who pays for a reasonable accommodation?

Under the Fair Housing Act, the housing provider generally bears the ordinary cost of a reasonable policy or service accommodation unless it would impose an undue financial and administrative burden. Other laws can affect the analysis.

Who pays for a reasonable modification?

Under the Fair Housing Act alone, the person with a disability generally pays for the physical modification. A federally assisted housing provider may have greater obligations under Section 504.

Can an accommodation request be verbal?

Yes. Federal guidance says no particular form or wording is required. A written record is useful, but a provider must consider a recognizable oral request.

Can a landlord ask for medical documentation?

When the disability or disability-related need is not apparent or known, a provider may ask for reliable information needed to verify disability and nexus. Broad medical files and detailed diagnoses are usually unnecessary.

How long does a landlord have to respond?

Federal law does not set one universal day count for every housing request. The response must be prompt in light of the circumstances, and an undue delay may be treated as a denial.

Does a reasonable modification include common areas?

Yes. A necessary, reasonable structural change can involve public and common-use spaces as well as the dwelling interior.

Can a landlord deny a request because it is expensive?

Cost can be part of the undue-burden analysis for an accommodation, but a conclusory claim is not enough. For a tenant-funded modification, the cost allocation is different. The provider should also consider an effective alternative.

Does New York law add protection?

Yes. The New York Human Rights Law independently prohibits disability discrimination in housing, and federal funding or local law can add further duties. A live request should be checked under every applicable layer.

Sources and verification notes

This article was checked against federal and New York sources available on August 27, 2026. It is educational exam preparation, not legal advice for a particular request or property.

Primary sources reviewed:

• 42 U.S.C. section 3602, Fair Housing Act definitions
• 42 U.S.C. section 3604(f), disability discrimination, accommodation and modification
• DOJ and HUD, Joint Statement on Reasonable Accommodations Under the Fair Housing Act
• DOJ and HUD, Joint Statement on Reasonable Modifications Under the Fair Housing Act
• DOJ, The Fair Housing Act
• DOJ, Statements and Guidance
• New York Executive Law section 292, definitions
• New York Executive Law section 296, unlawful discriminatory practices

Verification note: the Fair Housing Act supplies the federal baseline. Section 504, the Americans with Disabilities Act, New York law and local law can create additional or different duties depending on the housing provider, funding and property.