Free Address Verifier: Check Any US Residential Address
Validate any US residential address and instantly see home type, estimated home value, and property details, pulled live from the same API thousands of businesses use to verify their leads.
Every lookup returns the full property picture
Most address validators tell you whether the address exists. AddressVerify tells you what's actually there.
addressValidbooleantrueReal-time deliverability
Catches typos, missing units, and non-deliverable addresses before they break your campaigns or strand your dispatch crews.
homeTypestring"SINGLE_FAMILY"Home type classification
Single family, condo, apartment, townhouse, multi-family, mobile home, or lot. Filter leads by the property type that matches your service.
homeValuestring"782900"Estimated home value
Current estimated market value from property records and MLS data. Score leads by buying power.
expandedDataobject{ propertyInfo, addressInfo, taxAssessment, listing }Full expanded property block
Living area, bed/bath counts, lot size, year built, tax assessment, listing status, last sold date. Returned on every lookup.
Three steps to a verified address
Type any US address
Number, street, city, state, ZIP. Works for single-family homes, condos, apartments, townhouses, and mobile homes.
"1013 Bates Ave, Bakersfield, CA 93307"Live API call, secured
Your input hits the same production endpoint customers integrate with. Bot detection and rate limits protect the demo.
POST api.addressverify.io/demo/lookupSee the full JSON response
Address, validation status, home type, and estimated home value, exactly like the real API response.
{ "addressValid": true, "homeValue": ... }Built for teams that can't afford bad addresses
Home services
Filter lead lists to verified single-family homes before dispatching crews. Stop sending technicians to non-existent addresses or apartments where no one needs a roof repair.
addressValid === true && homeType === "SINGLE_FAMILY"Solar & roofing
Skip apartments and condos automatically. Only quote homeowners with viable roofs. Layer in homeValue to qualify leads by financial profile before a sales call.
homeType === "SINGLE_FAMILY" && homeValue > 300000Real estate
Validate seller lead addresses and pull property context in one call: bedrooms, baths, lot size, last sold date. Pre-fill listing intake without manual lookups.
if (addressValid) enrich(lead).withExpandedData()Lead-gen platforms
Reject undeliverable, PO Box, and non-residential leads at form submit. Pass clean, structured property data to downstream buyers: fewer disputes, higher payouts.
if (!addressValid) return rejectLead("undeliverable")Frequently asked questions
01Is the address verifier really free?▾
Yes. You get 20 free address lookups per day with no signup required, and every response includes the full expanded property data. For higher volume or programmatic access, our free API plan includes 50 calls per month.
02What data does the verifier return?▾
Every lookup returns whether the address is valid, the home type (single family, condo, apartment, townhouse, etc.), an estimated home value when available, and the full expanded property block: bedroom count, bathrooms, living area, lot size, year built, tax assessment, and listing history.
03Where does the data come from?▾
AddressVerify aggregates data from county property records, MLS feeds, and proprietary residential property datasets to deliver real-time residential address intelligence.
04Does this work for commercial addresses?▾
The verifier is optimized for US residential addresses. Commercial properties may return valid USPS results but limited property metadata.
05How do I use this in my own application?▾
The verifier on this page hits the same API endpoint your integration would use. See the API docs to integrate it into your own app, with code samples in JavaScript, Python, PHP, Go, and Ruby.
Ready to verify at scale?
50 free API calls when you sign up. No credit card required.