255 31st St, Boulder, CO 80305 Property Records

Boulder County property record for 255 31st St, Boulder, CO 80305

Property Summary

Property Type	Single Family Home
Details	3 bd · 1.75 ba · 1,069 sqft · built 1955
Lot Size	0.172 acres (7,487 sqft)
Owner	Individual Name on File
Last Sale	$875,000 (Aug 2022)
Tax Bill	$4,834 (2025)
Deeds & Mortgages	Aug 2022 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`1577-05-2-10-026`

Property Details

APN / Parcel Number

Primary APN	`1577-05-2-10-026`
Alternative APNs	`R0004583` `0004583`

Interior

Bedrooms	3 Beds
Full Baths	1.75 Baths
Half Baths	1 Half Bath
Total Rooms	5 Rooms
Stories	1 Story
Building Area	1,069 sqft Living Area
1st Floor Area	1,069 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1955
Effective Year Built	Effective 1980
Architectural Style	Ranch
Exterior Material	Wood Shingle
Construction Type	Frame
Roof Material	Asphalt
Lot Area	7,487 sqft (0.172 acres)
Garage Type	Carport
Garage Area	219 sqft
Carport	Carport
Carport Area	219 sqft
Parking Spaces	1 Parking Space
Porch	Porch
Porch Area	68 sqft

Utilities, Heating & Cooling

Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0004583
Street Address	255 31ST ST
City	BOULDER
State	CO
Zip	80305-3403
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 26 BLK 10 HIGHLAND PARK 1
Legal Range	70
Legal Township	1S
Legal Section	05
Legal Subdivision	HIGHLAND PARK 1 - BO
Legal Block	10
Legal Lot Number	26
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	2
Census Block	2005
Census Tract	12507

Owner

Source: Boulder County records, as of September 18, 2026

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Owner of Record	Individual Name on File
Mailing Address	255 31ST ST, BOULDER, CO 80305-3403
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Aug 8, 2022 · Amount on File
Deed Sale	Aug 8, 2022 · Amount on File
Prior Sale	Nov 17, 1999 · Amount on File
Deed Document Number	20223975407
Prior Transfer Date	Dec 10, 2001
Prior Transfer Doc	0002237429
Record Updated	Oct 29, 2026

August 2022: Special Warranty Deed, Transfer

Document Type	Special Warranty Deed
Jurisdiction	BOULDER CO
Recording Date	Aug 8, 2022
Property Address	255 31ST ST, BOULDER, CO 80305-3403
Document Number	0003975407
Instrument Date	Aug 3, 2022
Instrument	3975407
Transaction Type	Transfer
Record Updated	Aug 22, 2022
Title Company	LAND TITLE GUARANTEE

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$87.50
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name
Address	1210 GILLASPIE DR, 1210, BOULDER, CO 80305-6653

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	255 31ST ST, BOULDER, CO 80305-3403

Mortgage

Document Number	0003975408
Date	Aug 8, 2022
Instrument	3975408

Lender

Name	ELEVATIONS CU
Type	Credit Union

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Sep 1, 2052

Tax Assessment & Valuation

Source: Boulder County assessment roll, as of September 18, 2026

Property Jurisdictions

Type	Name
State	Colorado
County	Boulder County
Municipality	Boulder City
Unified School District	Boulder Valley School District RE-2 (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$50,402 (-0.59%) Land $27,309 Building $23,093	$811,200 (-) Land $471,600 Building $339,600
2025	$4,834.00 (+2.26%)	$50,700 (-13.23%) Land $29,475 Building $21,225	$811,200 (-6.98%) Land $471,600 Building $339,600
2023	$4,727.00 (+11.07%)	$58,431 (+27.48%) Land $34,673 Building $23,758	$872,100 (+32.24%) Land $517,500 Building $354,600
2022	$4,256.00	$45,835 Land $26,257 Building $19,578	$659,500 Land $377,800 Building $281,700

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

Flood

Source: FEMA National Flood Hazard Layer, effective October 14, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Community Rating System	Class 5 (25% premium discount)
Nearby Flood Policies	9 in force
Nearby Flood Claims	1 (2013)
Claims Outside the SFHA	1 of 1
Most Recent Claim	Sep 2013 · Severe Storms, Flooding, Landslides, And Mudslides

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Low lower than 80% of the US · lower than 91% of Colorado
Wildfire Likelihood	0.02% annual chance
Exposure	None beyond ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	CITY OF BOULDER serves 166,080 people · EPA ID CO0107152
Water Source	Surface water
Last State Inspection	Sep 2024
Lead	2 ppb (2023–2025) action level 15 ppb

Violations Reported to EPA

Water Quality	Haloacetic acids resolved · Jul 2017
Treatment and Procedure	None last 10 years
Monitoring and Reporting	1 last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 294 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Ayva Networks Fixed Wireless	2,500 / 2,500
CenturyLink Fiber	2,000 / 1,000
Xfinity Cable	2,000 / 250
Verizon Fixed Wireless	300 / 20
LiveWireNet Fixed Wireless	250 / 100
T-Mobile Fixed Wireless	100 / 20