855 12th St, Boulder, CO 80302 Property Records

Boulder County property record for 855 12th St, Boulder, CO 80302 · Last verified June 2026

Property Highlights

Property Type	Residential > Single Family > Home
Bedrooms	3 Beds
Bathrooms	2.5 Baths
Year Built	Built 1970
Square Footage	2,216 sqft Living Area
Lot Size	6,252 sqft (0.144 acres)
Occupancy	Owner Occupied
Last Sale	$850,000 (2020)
Tax Bill	$7,841.00 (2025)

Property Details

APN / Parcel Number

Primary APN	`1463-31-3-23-010`
Alternative APNs	`R0003097` `0003097`

Interior

Bedrooms	3 Beds
Full Baths	2.5 Baths
Partial Baths	1 Partial Baths
Total Rooms	7 Rooms
Building Area	2,216 sqft Living Area
Gross Area	2,666 sqft Gross Area
1st Floor	1,697 sqft 1st Floor
Upper Floors	294 sqft Upper Floors
Basement Area	225 sqft Basement
Finished Basement	225 sqft Finished
Interior Structure	Wallboard/Drywall Interior Structure

Exterior

Year Built	Built 1950
Effective Year Built	Effective 1970
Architectural Style	Split Level Style
Exterior Material	Brick Veneer Exterior
Construction Type	Frame Construction
Lot Area	6,252 sqft (0.144 acres)
Parking Spaces	2 Parking Spaces
Garage Type	Attached Garage
Garage Area	450 sqft Garage
Porch	Porch
Porch Area	213 sqft Porch

Utilities and HVAC

Heating System	Forced Air with Air Conditioning Heating

Location & Zoning

Account Number	R0003097
Street Address	855 12TH ST
City	BOULDER
State	CO
Zip	80302-7520
Property Usage	Residential Property Usage
Type	Residential > Single Family > Home
Legal Description	LOTS 37-38 BLK 25 UNIVERSITY PLACE
Legal Range	70
Legal Township	1N
Legal Section	31
Legal Subdivision	UNIVERSITY PLACE - BO
Legal Block	25
Legal Lot Number	37
Jurisdiction	BOULDER CO
Minor Civil Division	BOULDER
Census Blockgroup	3
Census Block	3003
Census Tract	12401

Owner

Source: Boulder County records · APN 1463-31-3-23-010

Assessment roll updated June 15, 2026 · Last verified June 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	2 Individuals Owners
Mailing Address	855 12TH ST, BOULDER, CO 80302-7520
Occupancy	Owner Occupied
Owner Type	Owner is an Individual, Couple or Unincorporated Entity
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Known Transactions	Last Sale Amount on May 11, 2020 Deed Sale Price on May 11, 2020 Prior Sale Amount on Mar 10, 2011
Deed Doc Number	20203783099
Prior Transfer Date	Feb 24, 1998
Prior Transfer Doc	0001780367
Record Refreshed	Sep 20, 2026

May 2020: Special Warranty Deed, Transfer

Document Type	Special Warranty Deed
Jurisdiction	BOULDER CO
Recording Date	May 11, 2020
Property Address	855 12TH ST, BOULDER, CO 80302-7520
Document Number	0003783099
Instrument Date	May 08, 2020
Instrument	3783099
Transaction Type	Transfer
Record Updated	Mar 31, 2022
Title Company	LAND TITLE GUARANTEE CO

Transaction

Amount	Amount Recorded
Tax	$85.00
Amount Accuracy	Full Amount Stated
Additional	Arms Length Transaction

Transferred From (Grantor/Seller)

Name	Verified Name
Address	845 12TH ST, 845, BOULDER, CO 80302-7520

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	855 12TH ST, BOULDER, CO 80302-7520

Tax Assessment & Valuation

Source: Boulder County records · Assessment roll updated June 15, 2026 · Last verified June 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

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.

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$89,475 (+8.8%) Land $59,956 Building $29,519	$1,315,800 (-) Land $881,700 Building $434,100
2025	$7,841.00 (+6.67%)	$82,237 (-7.4%) Land $55,106 Building $27,131	$1,315,800 (-0.73%) Land $881,700 Building $434,100
2023	$7,351.00 (+9.73%)	$88,809 (+23.09%) Land $56,146 Building $32,663	$1,325,500 (+27.69%) Land $838,000 Building $487,500
2022	$6,699.00	$72,148 Land $46,002 Building $26,146	$1,038,100 Land $661,900 Building $376,200