The rules for renting a room in your house come from several directions at once: your mortgage lender, your homeowners association, local zoning and registration offices, your insurance company, federal and state fair housing law, landlord-tenant statutes, and the IRS. None of them cancel each other out. Before a tenant moves in, you need to confirm the arrangement is allowed, put the right coverage and paperwork in place, and set up the tax reporting you’ll owe at year-end.
Start With Your Mortgage and HOA
Read your mortgage agreement first. Many conventional loans allow renting a room in a home you still occupy, but government-backed loans are stricter. FHA and USDA loans typically require you to live in the property for at least a year before renting any part of it, and some loan agreements restrict rental activity altogether. Renting in violation of your mortgage terms can be treated as occupancy fraud, which could trigger a default notice or loan acceleration.
If a homeowners association governs your community, check its covenants too. HOAs frequently restrict or prohibit renting rooms, cap the number of rentals in the community, or require board approval before any lease is signed. Violating these restrictions can bring fines or legal action from the association.
Zoning and Rental Registration
Local zoning determines what kind of housing activity is allowed on your property. Some jurisdictions classify a rented room as a home occupation or an accessory dwelling unit, each with its own parking, occupancy, or permitting rules. Others draw a line between short-term rentals under 30 days and long-term arrangements, with separate permits for each. Call your local planning or zoning office before you advertise.
Many cities and counties also require landlords to register rental properties, even when you’re renting a single room. Registration usually involves a fee, an initial safety inspection, and periodic renewals. Some jurisdictions require annual renewal, others only when tenants change. Skipping registration can result in civil penalties.
Update Your Insurance
This is where homeowners most often get blindsided. A standard homeowners policy is written for an owner-occupied residence and generally does not cover incidents involving a paying tenant. If your tenant or their guest gets hurt in your home, your insurer can deny the claim on the grounds that you were running an undisclosed rental. Even without an explicit rental exclusion, insurers have successfully denied claims when the homeowner failed to disclose rental activity.
Call your agent before the tenant moves in. In most cases, you’ll need either a landlord endorsement added to your existing homeowners policy or a standalone landlord policy. Landlord coverage fills gaps that homeowners policies leave open, including tenant-caused damage, lost rental income if the property becomes uninhabitable, and higher liability limits. The cost of an endorsement is small next to the cost of an uninsured claim.
Fair Housing Rules and the Owner-Occupied Exemption
The Fair Housing Act bars discrimination in housing based on race, color, national origin, religion, sex, familial status, and disability. There is a commonly misunderstood exception for homeowners renting rooms. Under what’s often called the Mrs. Murphy exemption, the Act’s tenant-selection rules do not apply to owner-occupied dwellings with four or fewer independent living units, as long as the owner actually lives in one of them.1Office of the Law Revision Counsel. 42 U.S. Code 3603 – Effective Dates of Certain Prohibitions If you’re renting a single room in your own home, you likely qualify.
The exemption has a hard limit. Even if you’re exempt from the tenant-selection rules, you are never exempt from the ban on discriminatory advertising. You cannot post a listing that states or implies a preference based on any protected characteristic.2eCFR. Part 100 Discriminatory Conduct Under the Fair Housing Act An ad saying “prefer female roommate” or “no children” violates federal law regardless of whether you live in the home. Many state and local laws go further and eliminate the owner-occupied exemption entirely, so the federal carve-out doesn’t guarantee you’re clear.
Screening Applicants Under Federal Rules
Using a formal screening process protects you, but pulling a credit report or background check counts as using a consumer report under federal law, and that triggers specific obligations.
If you reject an applicant based partly or entirely on information in a consumer report, you must give the applicant an adverse action notice. It has to include the name, address, and phone number of the reporting agency, a statement that the agency did not make the rejection decision, and notice of the applicant’s right to dispute inaccurate information and request a free copy of their report within 60 days.3Office of the Law Revision Counsel. 15 U.S. Code 1681m – Requirements on Users of Consumer Reports If a credit score influenced your decision, you must also disclose the score, its range, and the key factors that hurt it.4Federal Trade Commission. Using Consumer Reports: What Landlords Need to Know
Background check companies operate under their own limits. They generally cannot report negative information older than seven years, with exceptions for bankruptcies (10 years) and criminal convictions (no time limit).5Federal Trade Commission. Tenant Background Checks and Your Rights Beyond the report itself, verifying employment and calling previous landlords is one of the most reliable ways to judge whether a housemate will work out.
Put the Lease in Writing
A written lease protects you and the tenant more than a handshake ever will. Even for one room, put the key terms on paper: monthly rent, due date, acceptable payment methods, lease length, and which parts of the house the tenant can use. Shared-living arrangements breed conflict when expectations aren’t explicit, so spell out house rules for common areas, guests, quiet hours, smoking, and pets.
Splitting Utilities
How you handle utilities deserves its own clause. The simplest approach is bundling a flat utility charge into the rent, giving the tenant a predictable monthly cost. Alternatively, split the actual bill using a formula based on the number of occupants, the tenant’s share of square footage, or another reasonable method. Whatever you choose, put the formula in the lease so neither party is guessing when the August electric bill arrives.
Late Fees and Renters Insurance
If you plan to charge a late fee, include the amount and grace period in the lease. About 19 states set statutory caps on late fees, while the rest require only that the fee be reasonable. Typical caps range from 4% to 12% of monthly rent. A late fee higher than your jurisdiction allows becomes unenforceable and can expose you to a counterclaim.
You can also require the tenant to carry renters insurance as a lease condition. It covers their personal belongings and gives them liability protection, which reduces your own exposure. Specify the minimum coverage amount and require proof before move-in.
Security Deposit Limits
Security deposits protect you against unpaid rent and property damage, but every state regulates how much you can collect, how you must hold it, and how quickly you must return it. Statutory caps typically range from one to three months’ rent, though roughly half the states impose no specific dollar cap and instead apply a reasonableness standard. Some states require the deposit to be held in a separate escrow account, and a handful require you to pay interest on it.
When the tenant moves out, you’ll generally have a set number of days to return the deposit minus documented deductions for unpaid rent or damage beyond normal wear and tear. Missing the deadline or failing to provide an itemized list of deductions can result in penalties, including statutory damages that exceed the deposit amount in some jurisdictions. Take photos of the room at move-in and move-out to support any deductions you claim.
Habitability and Reasonable Modifications
Even when you’re renting a single room in your own home, you have a duty to keep the space livable. The implied warranty of habitability requires you to maintain rental property in a condition that’s safe and fit for human habitation, regardless of what the lease says about repairs. That means functioning heat, working plumbing, no pest infestations, and compliance with local housing codes. Ignoring repair requests can give the tenant legal grounds to withhold rent or break the lease.
If the tenant has a disability, federal law requires you to allow reasonable modifications to the rented space at the tenant’s expense. That might mean grab bars in a bathroom or a widened doorway. You don’t have to pay for the modification, but you can’t refuse to allow it.6HUD Exchange. CoC and ESG Additional Requirements – Reasonable Modifications Some state and local laws impose a higher standard and may require you to cover the cost in certain circumstances.
Privacy and Notice Before Entry
The tenant’s room is their home, and they have a legal right to privacy in it. Most states require landlords to give at least 24 to 48 hours’ notice before entering a rented space, and the notice should state the reason. Emergencies like a burst pipe or a fire are the main exception.
Put your entry policy in the lease. Specify the notice period, acceptable reasons (repairs, inspections, showing the room to a prospective tenant), and how you’ll deliver notice. Keep a written record of every notice you give. Entering without proper notice can expose you to legal liability.
Rent Increases and Ending the Arrangement
If your tenant is on a month-to-month arrangement, you can raise the rent, but only with proper written notice. Most states require 30 days’ notice, though some require 60 or 90 days for larger increases. Cities and counties with rent control ordinances cap annual increases and add procedural steps. For fixed-term leases, the rent stays locked until the lease expires unless the agreement includes a specific escalation clause.
Removing someone follows different rules depending on whether your jurisdiction classifies the occupant as a tenant or a lodger. In many states, a lodger is someone who rents a room in an owner-occupied home and shares common areas with the owner. Lodgers typically have fewer protections: notice periods can be shorter, and in some jurisdictions you don’t need a court order to remove a lodger after proper notice expires. A tenant renting a self-contained unit almost always requires a formal court eviction.
Either way, eviction starts with a written notice, usually a pay-or-quit notice for unpaid rent or a cure-or-quit notice for lease violations. If the person doesn’t comply, you generally must file an unlawful detainer or eviction lawsuit and let a judge decide. Self-help evictions are illegal in virtually every state. Changing locks, shutting off utilities, or removing a person’s belongings without going through the legal process can result in penalties against you and give the occupant grounds for a lawsuit.
Lead-Based Paint Disclosure for Pre-1978 Homes
If your house was built before 1978, federal law requires you to give tenants specific information about lead-based paint hazards before they sign a lease. You must provide a copy of the EPA’s “Protect Your Family From Lead in Your Home” pamphlet, disclose any known lead paint or hazards, hand over any available lead inspection reports, and include a lead warning statement in the lease itself.7U.S. Environmental Protection Agency. Real Estate Disclosures About Potential Lead Hazards Keep signed copies for at least three years after the lease begins.8Office of the Law Revision Counsel. 42 U.S. Code 4852d – Disclosure of Information Concerning Lead Upon Transfer of Residential Property
A few situations are exempt: housing built after 1977, leases of 100 days or fewer, and housing exclusively for elderly or disabled residents where no child under six lives or is expected to live. Zero-bedroom units like studio lofts are also exempt unless a young child will be living there.7U.S. Environmental Protection Agency. Real Estate Disclosures About Potential Lead Hazards
Reporting the Income and Deducting Expenses
Every dollar of rent you collect is taxable income, and the IRS expects you to report it.9Internal Revenue Service. Topic No. 414, Rental Income and Expenses For most room-rental situations, you report income and deductible expenses on Schedule E of Form 1040. If you provide substantial services beyond the basics like heat and trash collection, such as daily maid service or regular meals, you report on Schedule C instead, and the income becomes subject to self-employment tax.10Internal Revenue Service. 2025 Instructions for Schedule E (Form 1040)
The 14-Day Rule
If you rent the room for fewer than 15 days during the tax year, you don’t have to report the rental income at all, and you can’t deduct any rental expenses. The rule is codified at 26 U.S.C. ยง 280A(g) and applies as long as you also use the home as your personal residence.11Office of the Law Revision Counsel. 26 U.S. Code 280A – Disallowance of Certain Expenses in Connection With Business Use of Home, Rental of Vacation Homes, Etc. Homeowners near major events like the Super Bowl or a college football weekend sometimes use this window for tax-free rental income.
Allocating Expenses
When you rent a room in your primary residence for 15 days or more, you can deduct a proportional share of your housing expenses against the rental income. The IRS allows any reasonable method for dividing expenses between rental and personal use. The two most common approaches are dividing by number of rooms or by square footage.12Internal Revenue Service. Publication 527, Residential Rental Property
For example, if the rented room is 180 square feet in an 1,800-square-foot house, 10% of qualifying expenses are deductible as rental expenses. Eligible deductions include your share of mortgage interest, property taxes, insurance premiums, utilities, repairs, and depreciation on the rental portion of the home.9Internal Revenue Service. Topic No. 414, Rental Income and Expenses Some expenses like water may be more accurately split by number of occupants rather than square footage, and the IRS accepts that as long as the method is reasonable.12Internal Revenue Service. Publication 527, Residential Rental Property
Keep thorough records of every dollar coming in and going out. Rental deductions are among the most commonly audited areas for individual filers, and receipts and documentation are your best defense.