How to Check a House’s Permit History Before You Buy

A freshly remodeled kitchen, finished basement, new deck, converted garage, or added bathroom can make a house look move-in ready.

But before you buy, there is one important question to ask:

Was the work properly permitted?

Permit history can reveal major changes to a property, including additions, renovations, electrical upgrades, plumbing work, HVAC replacements, roof repairs, fire damage restoration, and structural improvements.

It can also help you spot possible unpermitted work before it becomes your problem.

A home inspection tells you what the inspector can see today. Permit history helps you understand what was officially recorded over time.

Why Permit History Matters When Buying a House

Building permits are usually required for work that affects a home’s structure, safety systems, utilities, or code compliance. Requirements vary by city and county, but permits commonly apply to projects involving electrical, plumbing, structural changes, additions, major renovations, roofs, HVAC, and similar work.

Local government offices, building inspectors, city halls, county recorders, and permitting departments often maintain property records that can include building permits, plans, inspection records, and related documents. Some records are available online, while older records may require a phone call, office visit, or public records request.

When a seller advertises “new electrical,” “finished basement,” “new addition,” or “fully renovated,” the permit history can help you verify whether that work was documented.

What You Can Learn From a House’s Permit History

Permit records can show:

• when major work was performed
• what type of work was approved
• who performed the work
• whether inspections were completed
• whether a permit was closed or left open
• whether additions or conversions were legally documented
• whether repairs followed a fire, storm, or other incident
• whether the current property description matches public records

Permit history does not tell you everything about a house, but it can give you a stronger picture of what changed and whether those changes were officially recorded.

Step-by-Step: How to Check a House’s Permit History

1. Start With the Property Address

Begin with the full property address.

Use:

• street number
• street name
• city
• county
• ZIP code
• parcel number, if available

Permit databases can be picky. Try alternate address formats if the first search does not work.

For example:

• 123 Main Street
• 123 Main St
• 123 Main
• parcel number instead of address
• owner name instead of address

If the property has changed addresses, been subdivided, or sits in an unincorporated area, you may need to search more than one local office.

2. Search the City or County Permit Portal

Many cities and counties have online permit portals.

Search for phrases like:

• “[city name] building permit search”
• “[county name] permit search by address”
• “[city name] property permit history”
• “[city name] building department records”
• “[county name] inspection records”

Once inside the portal, search by address or parcel number.

Look for permits related to:

• additions
• remodels
• decks
• garages
• finished basements
• roof replacement
• electrical work
• plumbing work
• HVAC replacement
• fire repairs
• structural work
• demolition
• septic or sewer work

Make sure you check both issued permits and closed permits if the system separates them.

3. Check Whether Permits Were Finaled or Closed

Finding a permit is only part of the process.

You also want to know whether the permit was completed, finaled, closed, expired, voided, or left open.

An open or expired permit can create issues after purchase. It may mean work was started but not officially inspected or completed.

Terms vary by city, but look for statuses like:

• finaled
• completed
• closed
• issued
• active
• expired
• withdrawn
• void
• failed inspection
• pending inspection

If you see open permits, ask questions before closing.

4. Compare Permits Against the Listing

Next, compare the permit history with the real estate listing.

If the listing says the home has:

• a finished basement
• new roof
• new electrical panel
• renovated kitchen
• added bathroom
• converted garage
• new deck
• room addition
• enclosed porch
• new HVAC system

Then look for matching permits.

No permit does not automatically prove something is wrong. Some work may not require a permit, and some older records may not be digitized. But if major work is advertised and no permit record appears, it is worth asking follow-up questions.

5. Compare Permits Against the Home Inspection

Your home inspector may notice signs of recent work, repairs, or modifications.

Compare the inspection report with the permit history.

For example:

• The inspector sees a newer electrical panel. Is there an electrical permit?
• The home has a basement bedroom. Was it legally finished?
• The deck appears newer. Is there a deck permit?
• The garage was converted into living space. Was that conversion approved?
• The home has a large addition. Does the square footage match public records?

This helps connect what is physically visible with what is officially documented.

6. Ask the Seller for Documentation

If the permit portal does not answer everything, ask the seller for records.

You can request:

• permit numbers
• contractor invoices
• inspection approvals
• final approval documents
• certificates of occupancy
• engineering reports
• warranties
• receipts for major work

A seller who completed permitted work should often have at least some documentation.

If the seller does not have paperwork for major work, that does not automatically mean the work was unpermitted, but it does mean you should keep digging.

7. Contact the Building Department

If you cannot find records online, call or email the local building department.

Ask:

• “Can you help me search permit history for this address?”
• “Are there any open permits on this property?”
• “Are there records for additions, remodels, electrical, plumbing, HVAC, or roofing?”
• “Are older permits available in person or by public records request?”
• “Does this property fall under city, county, or another jurisdiction?”

This step is especially important for older homes, rural properties, and areas where records are not fully digitized.

8. Search for Related Property Records

Permit history is only one part of the broader property-history picture.

Also check:

• assessor records
• property tax records
• prior listings
• MLS remarks, if available through your agent
• fire department records
• code enforcement records
• zoning records
• certificates of occupancy
• septic or well records, if applicable

If a house was damaged by fire, altered after a major incident, or expanded over time, those clues may appear in different places.

Visual: Permit History Research Workflow

Permit research is not always a single search. The goal is to compare what the home looks like today with what public records say happened over time.

Red Flags to Watch For

Permit history can raise important questions before you buy.

Watch for:

• a finished basement with no permit
• a bedroom addition not reflected in public records
• a garage conversion with no documentation
• a deck, porch, or sunroom with no permit
• a recently replaced roof with no record
• major electrical or plumbing updates with no permit
• permits that were issued but never finaled
• failed inspections with no follow-up
• square footage that does not match the listing
• seller claims that do not match public records

Unpermitted work can create problems with safety, resale, insurance, financing, and future renovations. Major work done without permits can lead to fines, required corrections, or expensive retroactive permitting depending on the local rules and the condition of the work. Recent real estate guidance also notes that buyers often ask questions about recent renovations and that unpermitted work can affect resale value or negotiations.

Does Every Home Improvement Need a Permit?

No.

Cosmetic work usually does not require a permit. Examples may include painting, flooring, cabinet replacement, basic fixtures, or minor repairs, depending on the location.

But work that affects safety, structure, utilities, occupancy, or building systems often does require one.

Permit rules vary by city and county, so the safest approach is to check the local building department’s requirements.

Common permit-triggering projects include:

• room additions
• structural wall changes
• electrical panel upgrades
• major rewiring
• plumbing relocation
• new bathrooms
• HVAC installation
• water heater replacement
• roof replacement
• deck construction
• garage conversions
• basement finishing
• fire restoration
• demolition

When in doubt, verify locally.

What If the House Has Unpermitted Work?

If you find possible unpermitted work, slow down before closing.

You may want to:

1. Ask the seller to explain the work.
2. Request contractor records, invoices, and inspection documents.
3. Ask your inspector to look closely at the area.
4. Talk to the city or county building department.
5. Ask whether retroactive permits are possible.
6. Speak with your real estate agent or attorney.
7. Negotiate repairs, credits, documentation, or a price adjustment.
8. Decide whether the risk is acceptable.

Do not assume every missing permit is a dealbreaker. Older records may be incomplete, and some work may not have required a permit at the time.

But do not ignore it either.

The goal is to understand the risk before you own it.

Permit History Is Only One Part of Property Research

A permit search can tell you whether certain work was officially recorded, but it will not reveal every important detail about a property.

It may not show:

• deaths connected to the property
• police activity
• fire incidents not tied to a building permit
• meth lab history
• sex offender registry information
• neighborhood concerns
• ownership issues
• undisclosed repairs
• unreported damage
• work done before records were digitized

That is why permit research should be part of a broader property-history review.

The Hard Part: Permit Records Are Spread Across Different Offices

Permit data is not stored in one national system.

To check a house’s permit history, you may need to search:

• city building department records
• county permit databases
• assessor records
• zoning records
• inspection records
• code enforcement records
• fire department records
• archived paper records
• seller-provided documents

Because the information is spread across different offices, it can be time-consuming, and easy to miss something important.

Instead of checking only one database and assuming you are done, you can start with a property-history search and use the results to guide deeper questions.

DiedInHouse.com helps you search available property-history data tied to a specific address, including records that may point to fire history, incidents, and other background details that matter before you buy.

Before You Buy, Research the Address

A house can look updated, clean, and move-in ready while still having unanswered questions in its history.

Before making an offer or closing on a home, check the permit history, compare it against the listing, review your inspection report, and ask direct questions about any major work.

👉 Then run an address search at DiedInHouse.com to review available property-history information before you commit.

FAQ

How do I find permit history for a house?

Start with the city or county building department website and search by address or parcel number. If records are not available online, contact the building department directly and ask for permit history, open permits, inspection records, and older archived records.

Are building permits public records?

In many places, building permits are public records, but access varies by location. Some cities provide online permit portals, while others require an in-person request, email request, or public records request.

What does it mean if a permit is open?

An open permit usually means the work has not been officially completed, finaled, or closed by the building department. Ask the seller, agent, inspector, or local building department what remains unresolved.

Is unpermitted work always a dealbreaker?

Not always. Some work may not have required a permit, and some older records may be missing. But major unpermitted work can create safety, resale, insurance, financing, and legal concerns, so it should be investigated before closing.

Can a home inspection find unpermitted work?

A home inspector may notice signs of questionable or recent work, but an inspection does not replace a permit search. The best approach is to compare the inspection report with public permit records and seller documentation.