A homeowner’s affidavit form is a sworn statement you sign to confirm you own a residential property and will perform or directly supervise the construction work yourself. Most local building departments require it before they will issue an owner-builder permit, which lets you pull permits on your own home without hiring a licensed general contractor. The form is short, but the signature carries real legal weight, so getting the details right matters.
What to Gather First
Pull these together before you sit down with the form. Missing one piece usually means a return trip to the permit counter.
- Proof of ownership. A recorded deed, mortgage document, or warranty deed with your name on the property. Some jurisdictions also accept a current property tax receipt. The name on the ownership document has to match the name on the affidavit exactly.
- Government-issued photo ID. Driver’s license, state ID, or passport. The building department and the notary will both want to see it.
- The property’s full street address, including zip code.
- The parcel or tax map number. You’ll find it on your most recent property tax bill or through your county assessor. Not every form asks for it, but have it ready.
- A description of the work. Specify the trades involved (electrical, plumbing, mechanical, structural), because many departments require a separate permit for each one.
There is no single universal form. Most building departments post their own version as a downloadable PDF. If you can’t find it online, call or stop by the permit counter and ask for the owner-builder affidavit packet.
Filling Out the Form
The form itself is usually one to two pages. The field names vary, but the core sections are the same.
Start with your full legal name as it appears on your deed and ID. If the two don’t match, use the name on the deed and bring both documents so permit staff can reconcile the difference. Enter the property address and parcel number next, and double-check both against your tax bill or assessor records. A transposed digit in the parcel number is one of the most common reasons applications get kicked back.
The description-of-work section is where people usually trip up. You don’t need architectural detail, but you do need enough specificity that the plan reviewer knows which codes apply. “Kitchen remodel” is too vague. Something like “Remove non-load-bearing wall between kitchen and dining room, install new 20-amp electrical circuit for range, relocate sink plumbing” tells the reviewer what inspections you’ll need.
Most forms include a block of acknowledgment statements you must initial or check. These usually confirm that you understand your responsibilities as the owner-builder, that you will comply with building codes, that you will supervise any workers on site, and that you will not sell or lease the property within a set period after the work is complete. Read each one before initialing. They are legally binding declarations, not boilerplate.
What You’re Swearing To
By signing, you’re swearing under oath that you meet specific legal conditions. A written declaration signed under penalty of perjury carries the same legal weight as courtroom testimony.
The core requirement is that you own the property and intend to live in it. Owner-builder exemptions exist so homeowners can work on their own homes, not so unlicensed people can act as general contractors on properties they plan to flip or rent out. Building departments take that distinction seriously.
Many states back it up with a sale restriction. In several jurisdictions you cannot sell or lease the property for one year after final inspection. Selling or offering to sell within that window creates a legal presumption that you were building for profit rather than personal use, which violates the terms of the exemption. Penalties vary but can include fines, loss of the right to use the owner-builder exemption in the future, or both.
If you’re buying the home simultaneously and your name isn’t on the deed yet, you generally can’t file the affidavit until recording is complete. The same goes for properties held in a trust or LLC. Some jurisdictions let a trustee or managing member sign; others require the property to be in a natural person’s name. Confirm with your local building department before assuming you qualify.
Notarization
Nearly every version of this form has to be notarized before the building department will accept it. Notarization doesn’t mean the notary is vouching for the truth of your statements. It means a neutral third party confirmed your identity and watched you sign.
Bring your government-issued photo ID. The notary will compare your face to the photo, confirm the name matches the document, watch you sign, and apply their seal, signature, and commission expiration date. The whole thing takes a few minutes.
In-office notary fees typically run $5 to $15 per signature, set by state law. Banks, shipping stores, and law offices commonly offer the service, and some building departments keep a notary at the permit counter.
Submitting the Affidavit
Once notarized, submit the original to your local building or community development department. Three options are standard:
- In person. Bring the notarized original, your ID, and your proof of ownership to the permit counter. This is the fastest route because a permit technician can review everything on the spot and flag problems immediately.
- By mail. Send the notarized original with any required supporting documents and the application fee. Use certified mail or a trackable carrier so you have proof of delivery.
- Online portal. Some jurisdictions accept a scanned upload through their electronic permitting system. Check whether the department also requires the original to follow by mail.
A permit application fee almost always applies. The amount depends on the scope of work, the property location, and the jurisdiction’s fee schedule, and it’s usually posted on the department website. If you mail your application and the payment is missing or wrong, it will sit unprocessed or come back to you.
After the department accepts the affidavit and application, you should get a confirmation, a permit number, or the permit itself. Keep a copy of the notarized affidavit, the permit, and every receipt. You’ll need them during inspections and when you close out the permit at the end of the project.
After Submission: Inspections
Filing the affidavit and pulling the permit is the beginning. As the owner-builder, you are responsible for scheduling inspections at each stage the permit requires, which commonly includes foundation, rough framing, rough electrical, rough plumbing, rough mechanical, insulation, and a final inspection.
If work fails an inspection, you’ll get a correction notice listing what needs to be fixed, and you can’t move to the next phase until the re-check passes. Skipping required inspections or working without scheduling them can trigger stop-work orders, fines, or an order to tear out concealed work so an inspector can see it.
The project isn’t officially done until you receive final inspection approval, sometimes called a certificate of completion or certificate of occupancy on larger projects. That date usually also starts the clock on any sale restriction tied to your owner-builder exemption.
Liability and Insurance Exposure
Signing the affidavit means taking on responsibilities a licensed general contractor would normally carry. The biggest one most people overlook is liability for injuries on the job site.
If you hire subcontractors or helpers, you may be personally liable if someone is hurt on your property. A standard homeowner’s insurance policy generally doesn’t cover construction-related injuries. If a subcontractor you hired lacks their own workers’ compensation coverage and is injured, you could face a lawsuit or be on the hook for medical costs out of pocket.
Before work starts, verify that every subcontractor is properly licensed and carries their own liability and workers’ compensation insurance, and ask for current certificates of insurance. Also look into a builder’s risk policy, which covers damage to the structure and materials during construction from events like fire, storms, or theft. Premiums typically run between 1% and 5% of the total construction budget.
Some states require owner-builders who hire employees (as opposed to independent subcontractors) to carry workers’ compensation and comply with payroll tax obligations, including income tax withholding and unemployment insurance. Misclassifying a worker as an independent contractor when they are really functioning as your employee can create serious legal and financial exposure.
Capital Gains If You Sell
The local building-code sale restriction isn’t the only reason to stay in the home. Under the Internal Revenue Code, you can exclude up to $250,000 of capital gain ($500,000 for married couples filing jointly) when you sell your principal residence, but only if you owned and used the home as your primary residence for at least two of the five years before the sale.1Office of the Law Revision Counsel. 26 USC 121 – Exclusion of Gain From Sale of Principal Residence
Owner-builder renovations often raise a home’s value significantly. If you sell before meeting the two-year use requirement, you lose the exclusion and owe capital gains tax on the full profit. The IRS measures the two years of use and two years of ownership separately, and they don’t need to be consecutive, but both tests must be satisfied within the five-year window ending on the sale date.2Internal Revenue Service. Sale of Your Home
Penalties for a False Affidavit
Because you sign under penalty of perjury, lying on the form is a criminal matter rather than a paperwork problem. Knowingly making a false statement to a federal government agency can carry up to five years in prison.3Office of the Law Revision Counsel. 18 USC 1001 – Statements or Entries Generally The federal perjury statute carries the same maximum: up to five years and a fine.4Office of the Law Revision Counsel. 18 USC 1621 – Perjury Generally State perjury laws add their own penalties on top.
In practice the more common consequence is administrative. If the building department finds you don’t actually own the property, or that you’re quietly acting as a contractor for someone else, expect the permit to be revoked, completed work to be red-tagged, and fines to follow. Some jurisdictions bar you from using the owner-builder exemption for several years after a violation. None of that is worth it when the form itself takes about fifteen minutes to fill out honestly.