How to Search Building Permits by Address in the US

Step 1: Find the Correct Permitting Jurisdiction

Before searching for a permit, identify which government authority handles permits for the property.

Start with the full street address.

If you are researching a property before purchasing it, the county assessor or property appraiser can often help identify the parcel or property identification number.

Some government systems rely heavily on this number because an address can change while the underlying parcel identifier remains associated with the property.

Step 2: Find the Official Building Permit Search Portal

Once you know the jurisdiction, go to the official government website.

Useful searches include:

When possible, use the government website rather than a third-party directory or an unofficial permit database.

Look for names such as:

Why official sources matter

Permit records can change. Portals can be redesigned. Some records can move between systems.

A third-party website may contain useful information, but the local authority is the better source when you need to verify whether a permit exists, what its status means or whether a document is official.

Step 3: Search Building Permits by Address

After opening the official permit portal, look for an option such as Search by Address, Property Search or Permit Search.

Enter the address exactly as the system requests.

If the exact address does not work

Do not give up after one search.

Try a simpler version.

Portland's official guidance specifically recommends trying the building number and street without the street suffix if a normal address search fails. It also allows an intersection search in some situations. :contentReference[oaicite:3]{index=3}

Check the property result carefully

Some search systems may return multiple properties or accounts.

Confirm:

• ✓ Correct street address
• ✓ Correct city
• ✓ Correct parcel
• ✓ Correct unit, if applicable
• ✓ Correct property owner information, when displayed

For condominiums and multi-unit properties, the property record may contain multiple related accounts or addresses. Portland, for example, provides specific guidance for locating condominium accounts through related property records. :contentReference[oaicite:4]{index=4}

What Information Can You Find in a Building Permit Search?

The amount of information available depends on the jurisdiction, the type of permit and the age of the record.

Portland's permit system, for example, can show the work or case description, status, review activity, inspection information and staff contact information for applicable records. :contentReference[oaicite:5]{index=5}

That is much more useful than simply knowing that "a permit exists."

How to Read Building Permit Status

Permit status is important, especially when you are checking current construction or researching a property before buying.

You may see terms such as:

Do not assume that these terms have identical meanings in every city.

Always check the local government's explanation of its permit statuses. Portland, for example, publishes separate guidance explaining how to check permit status through PortlandMaps. :contentReference[oaicite:7]{index=7}

How to Find Old Building Permits

This is where many online permit searches fail.

A modern permit portal may not contain every permit ever issued for a property.

Older records can exist in:

Portland provides a clear example of this issue. Its current online resources contain substantial permit information, but certain records outside the online coverage require a formal public-records request. :contentReference[oaicite:8]{index=8}

The lesson is simple:

What If You Search an Address and Find No Permit?

This is one of the most important sections of the entire guide.

A blank search result is not enough evidence to conclude that a property has never had a permit.

Check these possibilities first

NYC's official guidance is particularly useful here: the city says that researching all filings and permits for an address requires using both DOB NOW and BIS. :contentReference[oaicite:9]{index=9}

In other words, even within one city, a single database may not tell the whole story.

Does a Missing Permit Mean the Work Was Unpermitted?

Not automatically.

This distinction is important for homeowners and especially for people researching a property before purchasing it.

A missing online record can have several explanations.

Portland itself warns that property information and permit records may not always match and directs users to the appropriate records process when information is unavailable online. :contentReference[oaicite:10]{index=10}

If you are buying a property and have concerns about an addition, garage, finished basement, deck or major renovation, treat a missing record as a reason to investigate further rather than as automatic proof of a violation.

Why Search Building Permit History Before Buying a House?

Permit history can help a buyer understand documented construction activity associated with a property.

You may want to search for records involving:

The permit record can then be compared with the property as it exists today.

For example, suppose a property listing describes a large addition. A permit search may help you determine whether there is a corresponding documented permit record.

That does not replace a professional inspection, title review, legal review or official confirmation. It is simply another useful source of property information.

Complete Building Permit Search Checklist

Use this process whenever you need to research a property's permit history.

Building Permit Search FAQs