840 12th St, Boulder, CO 80302 Property Records

Boulder County property record for 840 12th St, Boulder, CO 80302 · Last verified June 2026

Property Highlights

Property Type	Residential > Single Family > Home
Bedrooms	2 Beds
Bathrooms	2 Baths
Year Built	Built 1975
Square Footage	2,918 sqft Living Area
Lot Size	7,980 sqft (0.183 acres)
Garage	Attached, 227 sqft
Occupancy	Owner Occupied
Tax Bill	$9,510.00 (2025)

Property Details

APN / Parcel Number

Primary APN	`1463-31-3-22-005`
Alternative APNs	`R0009067` `0009067`

Interior

Bedrooms	2 Beds
Full Baths	2 Baths
Total Rooms	6 Rooms
Building Area	2,918 sqft Living Area
Gross Area	3,735 sqft Gross Area
1st Floor	1,324 sqft 1st Floor
Upper Floors	982 sqft Upper Floors
Basement Area	1,097 sqft Basement
Finished Basement	612 sqft Finished
Unfinished Basement	485 sqft Unfinished
Stories	2 Stories
Interior Structure	Plaster Interior Structure

Exterior

Year Built	Built 1924
Effective Year Built	Effective 1975
Exterior Material	Combination Exterior
Construction Type	Masonry/Concrete Masonry Units (CMUs) Construction
Roof Material	Asphalt Roof
Lot Area	7,980 sqft (0.183 acres)
Parking Spaces	1 Parking Spaces
Garage Type	Attached Garage
Garage Area	227 sqft Garage
Deck Area	390 sqft Deck
Porch	Enclosed Porch
Porch Area	105 sqft Porch

Utilities and HVAC

Cooling System	Central Cooling
Heating System	Heat Pump Heating

Location & Zoning

Account Number	R0009067
Street Address	840 12TH ST
City	BOULDER
State	CO
Zip	80302-7521
Property Usage	Residential Property Usage
Type	Residential > Single Family > Home
Legal Description	LOTS 14-15 & N1/2 LOT 16 BLK 24 UNIVERSITY PLACE
Legal Range	70
Legal Township	1N
Legal Section	31
Legal Subdivision	UNIVERSITY PLACE - BO
Legal Block	24
Legal Lot Number	14
Jurisdiction	BOULDER CO
Minor Civil Division	BOULDER
Census Blockgroup	3
Census Block	3002
Census Tract	12401

Owner

Source: Boulder County records · APN 1463-31-3-22-005

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	Individual Owner on File
Mailing Address	840 12TH ST, BOULDER, CO 80302-7521
Occupancy	Owner Occupied
Owner Type	Owner is a Company
Vesting	Trustor/Debtor (Borrower in Default/Foreclosure On Trustee's Deed)

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Known Transactions	Mar 05, 1996 Prior Sale Amount on May 25, 1977
Deed Doc Number	19961588828
Record Refreshed	Sep 20, 2026

June 2023: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	BOULDER CO
Recording Date	Jun 26, 2023
Property Address	840 12TH ST, BOULDER, CO 80302-7521
Document Number	0004012006
Instrument Date	Jun 22, 2023
Instrument	4012006
Transaction Type	Transfer
Record Updated	Jul 26, 2023

Transaction

Amount	Amount Recorded
Tax	$0.00
Amount Accuracy	Full Amount Stated
Additional	Arms Length Transaction

Transferred From (Grantor/Seller)

Name	Verified Name
Address	840 12TH ST, BOULDER, CO 80302-7521

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	840 12TH ST, BOULDER, CO 80302-7521

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 and are not market price estimates.

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$115,321 (+8.8%) Land $67,735 Building $47,586	$1,695,900 (-) Land $996,100 Building $699,800
2025	$9,510.00 (+5.04%)	$105,994 (-8.02%) Land $62,256 Building $43,738	$1,695,900 (-1.4%) Land $996,100 Building $699,800
2023	$9,054.00 (+21.99%)	$115,234 (+32.64%) Land $63,436 Building $51,798	$1,719,900 (+37.59%) Land $946,800 Building $773,100
2022	$7,422.00	$86,875 Land $51,972 Building $34,903	$1,250,000 Land $747,800 Building $502,200