Arapahoe County Property Assessor 2026: Search & Tax Records

Arapahoe County Colorado Property Record Guide

Search Arapahoe County Property Values, Parcel Maps and Tax Records

The Arapahoe County Assessor maintains ownership, parcel, classification, sales, value and assessment information for residential, commercial, agricultural and vacant property. The Treasurer maintains tax statements, balances, receipts, online payments, delinquency and tax-lien information. The Clerk and Recorder maintains deeds, mortgages, liens, releases and other recorded legal documents.

This 2026 guide explains exactly which portal to use, what to enter, which fields to verify, how Colorado property values become tax bills, what current deadlines have passed, how to retrieve receipts and how to avoid paying or appealing the wrong account.

Search by PIN, AIN, owner or address
Compare actual and assessed values
Open ArapaMAP for parcel context
Verify the live tax account before paying
County Assessor PK Kaiser
Assessor telephone 303-795-4600
County Treasurer Michael R. Westerberg
Treasurer telephone 303-795-4550
Last reviewed August 6, 2026
Current action position

August 2026 Arapahoe County Property and Tax Status

All standard 2026 Assessor protest periods and normal 2025 property-tax payment deadlines have passed. Owners with an unpaid balance should use the Treasurer’s live tax search because statutory interest is now included in the displayed amount.
Real-property valuation appeals The 2026 Assessor appeal period ran from May 1 through June 8. A property owner who filed should follow the deadline printed on the Notice of Determination or later County Board decision.
Business personal-property appeals The 2026 filing window ran June 15 through June 30. Assessor determinations were due by July 10.
2025 taxes payable in 2026 First-half, full-payment and second-half deadlines have passed. Online payment remains available through September 30 with the applicable interest.
Upcoming tax-lien risk: The annual tax-lien sale is scheduled for November 5, 2026. Owners with unpaid taxes should resolve the complete live balance before tax-sale cutoff requirements become applicable.
Live-record rule: A printed statement, prior screenshot or saved balance can become outdated. Search the current Treasurer account before mailing money, paying online, refinancing or relying on a payoff.
Choose the correct custodian

Assessor, Treasurer, Clerk or GIS: Which Office Do You Need?

Assessor

  • Actual and assessed values
  • Owner and parcel information
  • Residential and commercial records
  • Agricultural and vacant land
  • Senior and veteran exemptions
  • Valuation appeals

Treasurer

  • Tax statements and postcards
  • Current amount due
  • Online and telephone payments
  • Receipts and payment history
  • Delinquent tax and interest
  • Tax-lien sale information

Clerk and Recorder

  • Deeds and mortgages
  • Liens and releases
  • Plats and recorded surveys
  • Certified document copies
  • Property Alert registration
  • Recording appointments

GIS and Local Jurisdiction

  • ArapaMAP parcel location
  • Address and parcel information
  • Tax districts and boundaries
  • Unincorporated county status
  • Building and zoning records
  • Municipal jurisdiction routing
Important separation: The Assessor does not accept property-tax payments. The Treasurer does not change market value or approve a valuation appeal. The Clerk records deeds but does not issue a legal title opinion.
Colorado comparison: Arapahoe and Jefferson counties use similar Assessor, Treasurer and Clerk structures, but their search systems and deadlines are separate. See the related Jefferson County Assessor property-search guide before using a neighboring county’s portal.
Start with the exact job

Choose Your Arapahoe County Property Task

Find an Assessor property record Search residential, commercial, agricultural or vacant property by parcel identifier, owner or address.
Check a current tax balance Search the Treasurer by PIN, AIN or address and review every unpaid year before paying.
Locate a parcel on a map Use ArapaMAP or Address and Parcel Info for geographic, jurisdiction and district context.
Review a valuation Compare actual value, assessed value, property characteristics, neighborhood sales and valuation date.
Find a deed or lien Search the Clerk and Recorder’s legal-document system by party, recording date or document number.
Apply, correct or appeal Use the Assessor for exemptions, ownership changes, address changes, business property and valuation procedures.

Jump to Your Arapahoe County Property Task

Before paying, appealing or buying

Six Fields to Match on an Arapahoe County Property Record

PIN Property identifier
AIN Assessor identifier
Owner Current or prior name
Address Physical parcel location
Value year Assessment period
Tax districts School and local units
Do not rely on an address alone: Condominiums, commercial suites, manufactured homes, divided parcels and adjoining tracts can share similar addresses.
Property-card decoder

What Arapahoe County Property-Search Fields Mean

Field What it identifies How to use it
PIN Property Identification Number used across Assessor and tax records. Best starting point for a precise tax and property search.
AIN Assessor Identification Number associated with the parcel or account. Useful for connecting Assessor, tax and state-assessed records.
Situs address Physical location of the property. Do not confuse it with the owner’s mailing address.
Actual value Assessor’s market-value estimate for the applicable valuation date. Review sales, condition and characteristics when questioning value.
Assessed value Value produced after applying Colorado’s assessment rate or rates. This amount is combined with mill levies to calculate tax.
Mill levy Combined rates of applicable taxing jurisdictions. One mill equals $1 of tax for each $1,000 of assessed value.
Neighborhood code Assessor grouping used in valuation and sales analysis. Helpful when searching comparable neighborhood sales.
Legal description Recorded lot, block, subdivision, section or tract description. Compare it with deeds and plats when addresses are unclear.
Choose the correct search category

Real Property, Business Property, Agricultural Land and Mobile Homes

Residential property Houses, condominiums, townhomes, duplexes and residential land are searched through the real-property system.
Commercial property Offices, retail, industrial, multifamily and other income-producing real estate use commercial valuation records.
Agricultural property Qualification depends on Colorado agricultural-use rules rather than appearance or parcel size alone.
Vacant land Review zoning, legal access, utilities, flood context and municipality separately from the Assessor’s value.
Business personal property Machinery, equipment, furniture and leasehold improvements can have a separate taxable account.
Manufactured homes Ownership, title, tax and transfer procedures may involve both the Assessor and Treasurer.
State-assessed property Certain utility, transportation or centrally assessed accounts require PIN or AIN searching through the Treasurer.
Severed minerals Mineral interests can be assessed separately from the surface parcel and may not appear under the expected address.
Colorado tax calculation

How Arapahoe County Actual Value Becomes a Tax Bill

Actual value Assessor’s market-value estimate based on the applicable valuation date and permitted appraisal methods.
2026 appeals use a June 30, 2024 valuation date.
Exemption adjustment A qualifying senior, veteran or other approved exemption can remove part of actual value before assessment.
Benefits must appear for the correct year.
Assessed value Colorado assessment rates are applied to the applicable actual value.
Residential property uses separate school and local-government rates for 2025 taxes.
Tax calculation Assessed value is multiplied by the mill levy for each applicable taxing jurisdiction.
Separate calculations are combined on the final statement.

Residential assessment rates used for 2025 taxes payable in 2026

Local-government assessment rate 6.25%

Used for county, city, fire, water and other applicable non-school local-government levies.

School assessment rate 7.05%

Used for applicable school-district tax calculations.

Why one property can show two assessed calculations: Colorado applies separate residential assessment rates to school and non-school taxing jurisdictions. The resulting tax calculations are combined on the statement.
Valuation evidence period: The Assessor’s 2025–2026 roll uses market, cost and income information collected from July 1, 2022, through June 30, 2024. Residential valuation must use the market approach.

Non-official tax-estimate worksheet

Step Worksheet action Important limitation
1 Start with the applicable actual value. Do not use an asking price or automated website estimate.
2 Subtract an approved exemption amount when applicable. Verify that the exemption appears for the correct tax year.
3 Apply the correct school and local-government assessment rates. Rates can change by year and property class.
4 Multiply assessed values by each applicable mill levy and divide by 1,000. Special assessments and other charges may not be included.
5 Compare the estimate with the Treasurer’s live statement. Only the official statement controls the actual bill.
2026 action calendar

Arapahoe County Property Deadlines and Current Meaning

First-half tax 2025 first-half payment deadline passed.
Full payment Full-payment deadline passed.
Real-property appeal 2026 Assessor protest deadline passed.
Second-half tax Second installment deadline passed.
Business appeal Personal-property protest deadline passed.
Online late payment Online payment cutoff before cleared-fund requirements.
Tax-lien sale Annual online tax-lien sale is scheduled.
Current August 6 position: Use the live Treasurer balance for an unpaid account. Interest is calculated according to the installment or full-payment option and the date payment is completed.
Current published online charges

Arapahoe County Property-Tax Payment Methods and Fees

Electronic check Online checking or savings payments currently have no convenience fee. Published fee: $0
Credit card Visa, MasterCard and Discover credit-card payments carry a percentage fee. Published fee: 2.40%
Debit card Visa or MasterCard debit transactions have a flat fee; other card routing may use the percentage fee. Published fee: $3.95 or 2.40%
Digital wallets PayPal, PayPal Credit, Venmo, Apple Pay and Google Pay are accepted online. Published fee: 2.40%
Mail or drop box Use the correct coupon and account identifier. The Treasurer accepts the USPS postmark for timely mailed payment. Keep mailing proof
In person or phone Payments can be made through the Treasurer’s approved counter and telephone routes. Confirm fee before authorizing
Online minimum: Each online property-tax transaction has a minimum payment amount of $3.
Returned payment: A returned electronic check can result in a $20 returned-payment charge, and the tax may continue to accrue interest.
Split methods: The online system does not currently allow one payment to be divided between an electronic check and credit card.
Late-payment decision path

What Happens When Arapahoe County Property Taxes Are Unpaid?

Due date passes Statutory interest is added according to the selected payment schedule.
July notice The Treasurer normally sends a delinquent statement after the second-half deadline.
September 30 Online late-payment access ends for the applicable year.
Tax-lien sale The lien may be sold at the annual November auction.
Later deed process After the statutory period, a lien holder may begin a Treasurer’s Deed process.
A tax-lien sale is not an immediate property transfer: The investor purchases the tax lien, not immediate possession of the property. Colorado law generally requires the lien to be at least three years old before a Treasurer’s Deed application can begin.
After September 30: Cleared funds such as cash, cashier’s check, certified check or money order may be required for delinquent payments approaching the tax-lien sale.
“I need the complete payoff for Arapahoe County PIN __________ through __________. Please confirm every unpaid year, interest, fees, tax-lien status and the exact payment method required.”
2026 valuation challenge

Arapahoe County Real-Property Assessment Appeals

The Assessor mailed real-property Notices of Valuation by May 1. The 2026 protest window ran through June 8. Supporting evidence should address what the property was worth as of June 30, 2024.

Comparable sales Use valid sales from the applicable data period and explain why the properties are similar in location, size, condition, design and use.
Incorrect property data Identify wrong square footage, basement finish, quality grade, building condition, land size, property class or improvement details.
Condition evidence Use dated photographs, inspection reports, repair estimates, damage reports and other factual evidence available on the valuation date.

After the Assessor decision

Read the Notice of Determination completely. Verify the new value, decision date and next filing deadline.
Use the County Board of Equalization route when eligible. Follow the instructions and filing date printed on the determination.
Prepare the same evidence in a clearer format. Add a one-page explanation, property-data comparison, photographs and comparable-sales table.
Save proof of filing. Keep the submission confirmation, postmark, fax report or stamped copy.
Read a County Board decision immediately. Further options can include the Colorado Board of Assessment Appeals, District Court or arbitration.
Observe the 30-day post-decision deadline. The next appeal route generally must be selected within 30 days after the County Board decision is mailed.
Missed the ordinary appeal period? A prior-year abatement, clerical correction or later notice can follow a different process, but it is not a general replacement for a missed market-value protest. Review the Assessor’s forms and ask which statutory route applies.
Separate business account

Arapahoe County Business Personal-Property Search

Business personal property can include machinery, office equipment, furniture, computers, tools, leasehold improvements and other assets used to produce income.

Search result missing The account may be below the current $56,000 exemption threshold or may require assistance from the Personal Property section.
Appeal evidence Use depreciation schedules, asset lists, disposal dates, leased-equipment records and a letter of authorization when an agent files.
January 1 ownership date The declaration should reflect assets owned on January 1. Disposals after January 1 are not prorated for the current assessment year.
Personal Property section: 303-795-4650 • arapahoepp@arapahoegov.com
Estimated BIA value: When no declaration is received, the Assessor may use Best Information Available. A protest should include a complete asset listing or depreciation schedule.
Open Business Personal-Property Search Search the official Assessor database or contact the office when an expected account does not appear.
Senior and veteran benefits

Arapahoe County Property-Tax Exemptions and Deferrals

Senior exemption A qualifying owner must generally be at least 65 on January 1 and have occupied the property as a primary residence for at least 10 consecutive years before January 1.
Disabled-veteran exemption Qualification is determined through the applicable Colorado veterans program and requires the current official application.
Senior or military deferral This is a loan or postponement program administered separately from the exemption. Applications are generally accepted January 1 through April 1.

Published exemption value

Qualifying senior exemption 50%

Fifty percent of the first $200,000 of actual value of the qualifying primary residence.

Qualifying disabled-veteran exemption 50%

Fifty percent of the first $200,000 of actual value of the qualifying primary residence.

2026 deadlines passed: The disabled-veteran filing deadline was July 1, 2026. The regular senior application deadline was July 15, 2026. Contact the Assessor about any late-filing provision or later notice rather than assuming an application can still be accepted.

Exemption-readiness checklist

  • Correct property PIN and AIN
  • Proof of ownership
  • Proof of primary residence
  • Age documentation
  • Ten-year occupancy evidence
  • Veteran disability documentation
  • Surviving-spouse documentation
  • Current contact information
Recorded legal documents

How to Search Arapahoe County Deeds, Liens and Releases

Open the official legal-document search. Use the Arapahoe County recorded-document portal.
Search current and prior party names. Try grantor, grantee, trust, estate, company and legal-name variations.
Use the document number when available. Copy it from a deed, mortgage, release, title file or prior search result.
Widen the recording-date range. Search around the closing, refinancing, lien or release date.
Match the legal description. Compare lot, block, subdivision, section, tract and parcel references.
Request a certified copy when required. A court, lender, title company or government program may require certification.
Recording or copy service Published fee What to know
Record a letter or legal-size document $43 flat fee Current Colorado recording fee effective July 1, 2025.
Record a plat, map or larger document $43 flat fee Only specified plat sizes and materials are accepted.
Non-certified recorded-document copy $0.25 per page Ordinary copy fee.
Certification Add $1 per document Added when certification is requested.
Online copy purchase card fee Add $2 per transaction Separate from document-copy charges.
Free title-monitoring tool: Register for the Clerk and Recorder’s Property Alert service to receive notification when a document is recorded under your registered name.
Title-search warning: The recorded-document portal provides access to public instruments but does not guarantee clear title or identify every ownership risk.
Maps, zoning and building records

Use ArapaMAP Without Confusing It With a Survey

Find the parcel visually Search an address or parcel and compare roads, neighboring parcels, aerial imagery and Assessor information.
Check jurisdiction Determine whether the property is inside Aurora, Centennial, Littleton, Englewood, Greenwood Village or another municipality.
Review tax districts Use map layers and the property record to identify school, fire, water, metro and other special districts.
Unincorporated county records Arapahoe County Public Works and Development maintains many zoning, building and land-development records for unincorporated property.
Municipal records Incorporated cities maintain their own building permits, zoning cases and development files.
Boundary verification Use the recorded plat, deed legal description and licensed survey for legal boundary questions.
City-versus-county mistake: Arapahoe County does not maintain building or zoning records for every incorporated city. Route the request to the municipality when the parcel is inside city limits.
Practical scenarios

Which Records Should Buyers, Owners and Escrow Customers Review?

User situation Records to review Best next action
New buyer Assessor page, deed, legal description, current tax account and special districts. Confirm title, taxes and jurisdiction before relying on seller documents.
Current homeowner Owner, mailing address, actual value, assessed value, exemptions and tax payment. Correct errors early and retain payment or filing confirmations.
Mortgage escrow customer Live Treasurer balance, lender disbursement, postcard and online receipt. Confirm whether the lender paid before making a duplicate payment.
Investor or landlord Every PIN and AIN, tax year, parcel, business account and taxing district. Review each parcel independently.
Inherited property Recorded deed, probate documents, Assessor ownership and tax mailing address. Resolve ownership documents before expecting databases to update.
Business owner Personal-property declaration, asset list, BIA assessment and tax account. Contact Personal Property staff before an estimated value becomes delinquent.
Assessment appellant Notice, property card, neighborhood code, sales, photographs and determination. Follow the next notice-specific deadline.
Buyer needing formal proof Current tax account, Certificate of Taxes Due and certified deed when required. Use formal documents rather than browser screenshots.
Official contact routing

Arapahoe County Assessor, Treasurer and Recorder Locations

Assessor — Littleton 5334 S. Prince Street
Littleton, CO 80120
303-795-4600
Monday–Friday, 8:00 a.m.–4:00 p.m.
Assessor — Aurora Arapahoe Altura Plaza
15400 E. 14th Place, Suite 500
Aurora, CO 80011
303-795-4600
Treasurer 5334 S. Prince Street
Littleton, CO 80120
303-795-4550
Monday–Friday, 8:00 a.m.–4:00 p.m.
Clerk and Recorder 5334 S. Prince Street
Littleton, CO 80120
303-795-4200
Branch hours: 8:00 a.m.–4:00 p.m.
Personal Property 303-795-4650
arapahoepp@arapahoegov.com
Use for business-property declarations and appeals.
Public Works Records 6924 S. Lima Street
Centennial, CO 80112
720-874-6500
Unincorporated land-development records.
Assessor office visits: Walk-ins are welcome, but appointments are recommended. Drop boxes are also available at several county locations for document submissions.

Arapahoe County Property Search Problems and Fixes

Problem Practical fix Correct office
Address returns no result Use house number and main street name; remove direction and street type. Assessor or Treasurer
Owner search returns too many records Add the municipality, PIN, AIN, neighborhood or property class. Assessor
Owner search returns no record Try surname only, prior owner, trust, estate, LLC or alternate spelling. Assessor and Clerk
Assessor owner differs from deed Confirm recording date and allow processing time for ownership updates. Clerk, then Assessor
Property page shows value but no bill Open the Treasurer’s tax search using PIN, AIN or address. Treasurer
Tax payment is missing Check the confirmation and bank activity, then retrieve the current-year receipt. Treasurer
Mortgage company says it paid Compare the lender disbursement with the live tax record before paying again. Lender and Treasurer
Business account does not appear The value may be below the exemption threshold or require staff assistance. Assessor Personal Property
GIS boundary appears wrong Compare deed, plat and survey; do not rely only on the map. GIS, Clerk or surveyor
Need a building permit Determine whether the parcel is unincorporated or inside a city. County PWD or municipality
Appeal deadline passed Review any later determination, abatement or correction route. Assessor or County Board
Need formal tax proof Request a Certificate of Taxes Due instead of relying only on a screen print. Treasurer
Need title protection Register for Property Alert and review recorded documents regularly. Clerk and Recorder
Unpaid tax is near tax sale Request the complete payoff and required cleared-fund method immediately. Treasurer
“I am researching Arapahoe County property PIN __________ or AIN __________ at __________. Please confirm whether my question belongs with the Assessor, Treasurer, Clerk and Recorder, GIS or the property’s municipality.”
Official portals open in a new tab

Arapahoe County Property Record Action Center

Use these official routes after confirming the PIN, AIN, owner, address and property type.

Exactly 10 title-specific answers

Arapahoe County Property Assessor Search FAQs

1. How do I search Arapahoe County property records?

Open the official Assessor property-search page and search by PIN, AIN, owner name or property address. Open the correct parcel and verify the owner, situs address, legal description, property class, actual value and assessed value.

2. What is the difference between an Arapahoe County PIN and AIN?

A PIN is a Property Identification Number, while an AIN is an Assessor Identification Number associated with the parcel or account. Both can help connect Assessor records with Treasurer tax information.

3. Where do I search and pay Arapahoe County property taxes?

Use the official Treasurer property-tax search. Search by PIN, AIN or address, open the correct account, review the Original Tax Statement and current balance, then select Payment Options after verifying the tax year and property.

4. What are the Arapahoe County online property-tax payment fees?

Electronic checking and savings payments currently have no convenience fee. Credit-card and most digital-wallet payments carry a 2.40% fee. Visa or MasterCard debit payments carry a published $3.95 fee, while other debit routing may use the percentage fee.

5. What happens if I did not receive an Arapahoe County tax statement?

Search the Treasurer’s live account immediately. Failure to receive the mailed postcard or statement does not remove responsibility for paying on time or eliminate statutory interest. The full statement is available online.

6. What was the 2026 Arapahoe County property appeal deadline?

The real-property Assessor appeal window ran from May 1 through June 8, 2026. Business personal-property appeals were due between June 15 and June 30, 2026. A later decision or notice can carry a separate deadline.

7. How are Arapahoe County residential property taxes calculated?

The applicable actual value is adjusted for approved exemptions, multiplied by Colorado assessment rates and then multiplied by the mill levies of the applicable taxing jurisdictions. For 2025 residential taxes payable in 2026, separate school and local-government assessment rates apply.

8. Where can I find Arapahoe County deeds and liens?

Use the Clerk and Recorder’s official legal-document search. Search current and prior party names, document number, recording date or legal-description information, and request a certified copy when required.

9. Is ArapaMAP a legal property survey?

No. ArapaMAP provides useful parcel, address, district and geographic context, but its displayed lines do not replace a recorded plat, deed legal description, title examination or licensed boundary survey.

10. What should I verify before relying on an Arapahoe County property record?

Verify the PIN, AIN, owner, situs address, legal description, property class, valuation year, actual value, assessed value and taxing jurisdictions. Check tax balances and recorded deeds through their separate official offices.

Official Sources and Editorial Verification

What was reviewed: Assessor search routes, PIN and AIN searching, ArapaMAP, 2026 appeal dates, Treasurer due dates, online payment fees, senior and veteran exemptions, tax-lien timing, recording fees, Property Alert and office locations.

CountyPropertyAppraiser.org is an independent informational website. It is not affiliated with Arapahoe County, the Assessor, Treasurer, Clerk and Recorder, County Board of Equalization, Public Trustee, Paymentus, ArapaMAP or any municipality or taxing district.

Property ownership, values, tax balances, interest, payment fees, deadlines, exemption rules, elected officials, office hours and portal interfaces can change. Confirm time-sensitive information with the responsible official office before paying, appealing, buying property or relying on a legal record.

Last reviewed: August 6, 2026.

Slug: arapahoe-county-assessor-property-search

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County Property Search, Homestead & Tax Help Toolkit

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Find the Correct County Office

Property Appraiser, Tax Collector, Clerk, GIS, and VAB offices do different jobs. Pick your task below.

Quick rule: Property Appraiser = value, records, parcel details, exemptions. Tax Collector = bill and payment. Clerk/Recorder = deeds and recorded documents. VAB = formal value disputes.

Official Property Search Helper

Use this when a county article tells you to search by owner, address, parcel number, folio, PCN, STRAP, or alternate key.

Search tip: If address search fails, try only the house number and main street name. Avoid typing Street, Avenue, Road, Drive, unit numbers, or punctuation unless the official portal requires it.

Homestead Exemption Readiness Check

This helps homeowners prepare before filing through the official county Property Appraiser website.

Important: This is not an eligibility decision. The official county Property Appraiser decides approval, required documents, late filing options, and exemption status.

TRIM Notice & Value Review Helper

Use this to organize your questions before calling the Property Appraiser or preparing an appeal.

Your preparation checklist

Value term Simple meaning
Market value The appraiser’s estimate of the property’s value as of the assessment date.
Assessed value The value after limits or caps may be applied.
Exemptions Approved reductions such as homestead or other exemptions.
Taxable value The value used by taxing authorities after exemptions.

Property Tax Bill Direction Helper

The Property Appraiser values property, but the Tax Collector usually handles the actual bill and payment.

Florida timing reminder: Many Florida tax bills are mailed around November and become delinquent if unpaid after March 31. Always verify exact dates, discounts, and payment fees with the official county Tax Collector.

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