Boulder County Property Search: Records, Tax & Map 2026
Search Boulder County property records through the official Assessor’s Property Search. Look up a property by street address, owner name, parcel number or account number, then review ownership information, assessed and actual values, land details, and available property characteristics.
Need a tax balance, recorded deed or parcel map instead? Boulder County maintains separate official resources for those records. This guide explains which search to open and how to interpret the information you find.
Quick answer: Where do I search Boulder County property records?
The Boulder County Assessor’s official property search is the best starting point for a parcel’s owner, property address, account number, parcel number, valuation and map location. The tool combines property information with an interactive map and printable property-report features.
For property tax balances and receipts, use the Treasurer’s Office. For copies of recorded ownership-transfer documents, use the Clerk & Recorder’s records search.
Official Boulder County property search tools
Boulder County has different offices for assessment records, tax collection and recorded real estate documents. Choosing the correct system saves time and prevents confusion between an assessed value, a tax balance and a recorded deed.
Assessor Property Search
Look up ownership, addresses, parcel and account identifiers, lot information, valuation, assessed value and available building details.
Search assessor records →Treasurer Tax Records
Review tax-account information, tax notices, payments and receipts. Payment availability can differ from record-access availability.
Open tax lookup →Clerk & Recorder
Find recorded deeds, deeds of trust, liens, plats and related documents by names, document details and other available search fields.
Search recorded documents →How to search Boulder County property records
The Assessor’s property search supports several search methods. You do not need every identifier before starting; an accurate street address or owner name is usually enough to begin looking for a match.
Open the official Assessor’s map
Visit the Boulder County Property Search. This county-operated interface contains a search bar and a selectable parcel map.
Enter your search information
Use a property address, owner name, street name, subdivision, account number, parcel number or section-township-range (S-T-R) reference. If a complete address does not match, try the street name or a known parcel identifier.
Select the matching property
Review the result carefully. Compare the location and address with your intended parcel, especially where several properties have similar street names or the owner holds more than one property.
Read the property information
Expand the available information panels to review ownership, mailing address, legal description, land area, building attributes and valuation details. Check the tax year associated with the value shown.
Use the map or print a report
Locate the parcel on the map and use the application’s print property report option when you need a reference copy. For recorded legal instruments or a current tax balance, move to the appropriate separate county search.
What information can you find in a property record?
The Assessor’s search is designed for assessment and identification, not as a substitute for a title examination. The record may include the following fields, depending on the parcel and available data.
| Record field | What it tells you | Why it matters |
|---|---|---|
| Owner and mailing address | The owner name and mailing address carried in the assessor’s records. | Helps identify the assessment account but does not replace reviewing recorded title documents. |
| Parcel number | A geographic property identifier used by county records. | Useful for confirming the parcel location and cross-referencing systems. |
| Account number | The identifier associated with the county assessment account. | Useful when asking the Assessor or Treasurer about a specific property. |
| Legal description | A recorded or assessment-based description of land location and boundaries. | Helps distinguish parcels with similar addresses. |
| Actual value | The value determined for property assessment purposes. | Provides tax-assessment context, not a guaranteed current sale price. |
| Assessed value | The taxable assessment value determined under applicable rules. | One component of the property tax calculation. |
| Land and buildings | Available land area, structures, building attributes and other characteristics. | Useful for reviewing property details and potential assessment errors. |
Review the record’s date and tax year before comparing values. A reported assessment value can differ from a current listing price, professional appraisal or completed sale price.
Boulder County property tax search and 2026 payment information
The Boulder County Treasurer collects property taxes. The 2026 payment schedule concerns 2025 property taxes payable in 2026, which should not be confused with the valuation year displayed on an assessment record.
Official 2026 property tax due dates
| Payment option | 2026 deadline | Explanation |
|---|---|---|
| First half | March 2, 2026 | First installment when paying in two halves. |
| Full payment | April 30, 2026 | Single payment instead of two installments. |
| Second half | June 15, 2026 | Remaining installment when using the half-payment option. |
These deadlines have passed. If your 2026 taxes remain unpaid, ask the Treasurer for the current amount including applicable interest and other charges rather than relying on the original tax notice.
Payment fees and account lookup
The Treasurer’s published electronic-payment information lists no processor charge for an e-check, a 3.29% fee with a $5.20 minimum for credit cards, and a 1.33% fee with a $1.45 minimum for debit cards. These are the county’s listed payment-method charges, not additional property tax rates. Because online payments are currently disabled, confirm when these options become available again.
The Treasurer’s tax portal identifies a taxpayer-access option that does not require a registered title-company account. Browser JavaScript and cookies may be required.
How to find Boulder County deeds and recorded documents
Property assessment records and recorded deeds answer different questions. The Assessor’s information helps identify a parcel and its assessment account. The Clerk & Recorder maintains recorded instruments that document transactions, interests and claims affecting real property.
Search by grantor or grantee
A grantor is the person or organization transferring an interest; a grantee receives it. The official search supports name-based lookups and other document information, which can help locate a deed when you know a seller or buyer’s name.
Search by document details
Use a recording number, document type, subdivision or other available fields. Available records include deeds, liens, deeds of trust, plats, foreclosure documents and various additional recorded instruments.
The county allows users to view, download and print watermarked recorded-document copies for free. Non-watermarked and certified copies may involve a charge. Check the document’s recording details and names before treating a result as belonging to the property in question.
The Recording Division also offers a free PropertyAlert service for notices when new documents are recorded against a property. Alerts can be helpful, but they do not prevent a fraudulent filing or replace appropriate legal follow-up.
Boulder County parcel maps and GIS search
The official Property Search includes a map that lets visitors locate parcels geographically. You can enter a known address or zoom in and select a parcel. The county’s Maps directory also links to additional GIS resources and planning-related maps.
Which map should you use?
Assessor parcel map: Use this for parcel identification, property location, tax-assessment context and nearby parcel exploration.
Open interactive parcel map →County GIS directory: Use this for additional county mapping topics, property-related mapping resources and downloadable GIS data.
Open Boulder County Maps →Map outlines are not a substitute for a professional boundary survey. If a fence, construction project, easement or property dispute depends on the exact location of a boundary, do not rely solely on an online parcel layer.
Downloadable property datasets
The Assessor also provides public datasets covering account and parcel numbers, owners and addresses, building details, land records, permits, sales, property values and tax areas. The county says the datasets are refreshed daily at 4 a.m.; the actual snapshot and data-field definitions should still be checked before using the information for analysis.
Property assessments, valuation and 2026 appeals
Boulder County’s Assessor determines property values for assessment purposes. A tax bill reflects more than the property’s actual value: assessment rates and mill levies also affect the amount owed. Colorado’s residential assessment framework includes separate assessment rates for school and non-school purposes beginning with the 2025 tax year payable in 2026.
2026 real property appeal schedule
| Event | 2026 date | What it means |
|---|---|---|
| Assessor appeal period | May 1 – June 8 | Window for filing a real property valuation appeal with the Assessor. |
| Notice of Determination | By August 15 | Deadline for the Assessor to issue its decision on an appeal. |
| Board of Equalization appeal | September 15 | Deadline to challenge the Assessor’s determination through the county board. |
These 2026 deadlines have passed. For an older assessment year or a new appeal cycle, check the county’s published appeal procedures rather than assuming the same window is open. Separate rules apply to business personal property.
If a future valuation appeal is appropriate, begin with the property record and Notice of Valuation. Check the recorded characteristics, classification and comparable sales data. Gather factual support for any claimed error and submit it through a method accepted by the Assessor during the applicable appeal period.
What if a Boulder County property search does not work?
Before assuming that a record is missing, check the search format, office responsible and record type. The following fixes address several common problems.
| Problem | What to try |
|---|---|
| No result for an address | Try the street name without extra address details, search by owner name or use a parcel/account number. Verify that the property is within Boulder County. |
| More than one matching parcel | Compare location, parcel number, subdivision and legal description before selecting a record. |
| Owner name appears outdated | Check the Clerk & Recorder for the relevant recorded deed and ask the Assessor about record updates. |
| Property characteristics are wrong | Contact the Assessor with the account number, address and documents or photos supporting a correction. Check whether an appeal deadline applies. |
| Tax details or payment option missing | Use the Treasurer’s system rather than the assessment map. Contact the Treasurer for delinquent amounts and current payment instructions. |
| Map is difficult to use on mobile | Use the county’s mobile scrolling guidance, landscape orientation or desktop browser. |
| Deed cannot be located | Search grantor/grantee names, recording details or date ranges and contact the Recording Division if necessary. |
Correcting an owner’s name or mailing address
The Assessor explains that title ownership names are tied to deeds recorded with the Clerk & Recorder. A simple typographical issue may be addressed with the Assessor, but changing, adding or removing an owner generally involves recording an appropriate deed.
A mailing-address correction is different. The Assessor accepts change requests through its designated process, including online, email, mail and telephone options. Have the parcel’s account number or site address, current mailing address and corrected address available.
Do not send sensitive identification documents unless the county specifically requires them through a secure official process.
Boulder County property record offices and contacts
Contact the office responsible for the record you need. Office hours and service availability can change, so confirm before traveling.
Boulder County Assessor
For: Property values, assessment records, characteristics, ownership display, parcel information and valuation appeals.
Address: 1325 Pearl St., 2nd Floor, Boulder, CO 80302.
Phone: 303-441-3530
Hours: Monday–Thursday, 7:30 a.m.–5 p.m.; closed Friday.
Assessor office information →Boulder County Treasurer
For: Property taxes, balances, receipts, payment methods and delinquent accounts.
Address: 1325 Pearl St., 1st Floor, Boulder, CO 80302.
Phone: 303-441-3520
Hours: Monday–Friday, 8 a.m.–4:30 p.m.
Treasurer office information →Clerk & Recorder – Recording
For: Recorded deeds, liens, deeds of trust, plats and document copies.
Address: 1750 33rd St., Suite 201, Boulder, CO 80301.
Phone: 303-413-7770
Hours: Monday–Thursday, 7:30 a.m.–5 p.m.; closed Friday.
Recording Division information →More official Boulder County resources
Frequently asked questions
Is Boulder County property search free?
The official Assessor’s online property search is publicly accessible for looking up assessment and parcel information. The Clerk & Recorder also provides free watermarked copies of recorded documents. Certain certified or non-watermarked document copies may cost money.
Can I search Boulder County property by owner name?
Yes. The Assessor’s property search supports owner-name searches, along with addresses, parcel numbers, account numbers, subdivisions and other search methods.
Where can I find a Boulder County parcel number?
Use the Assessor’s Property Search and select the correct property. Its basic property information includes parcel and account identifiers.
How can I find property taxes by address?
Start with the Assessor’s search if you need to confirm the parcel or account, then use the Treasurer’s tax lookup. The Treasurer is the responsible office for tax accounts and payment information.
Are Boulder County property taxes payable online in October 2026?
The Treasurer currently reports that online tax payments have been disabled for the remainder of the year. Tax account lookup and receipt access remain available. Contact the Treasurer for the accepted method of paying an outstanding balance.
How do I get a copy of a recorded deed?
Use the Boulder County Clerk & Recorder’s public document search. Search by grantor/grantee name or recording details. Watermarked copies can be downloaded free; additional fees may apply for other copy types.
Is the assessor’s parcel map a legal boundary survey?
No. GIS parcel mapping is useful for identifying and locating property, but it should not be relied upon as a substitute for a professional boundary survey when precise lines or legal boundaries matter.
Can I challenge a 2026 Boulder County property valuation?
The regular 2026 real property appeal window ran from May 1 through June 8. The Board of Equalization appeal deadline was September 15. Both deadlines have passed; contact the Assessor to confirm what procedures, if any, remain relevant to your circumstances.