1139 12th St, Boulder, CO 80302 Property Records

Boulder County property record for 1139 12th St, Boulder, CO 80302 · Last verified August 2026

Property Summary

Property Type	Multi-Family Dwellings
Details	7 bd · 3.5 ba · 2,660 sqft · built 1899
Lot Size	0.142 acres (6,196 sqft)
Owner	Company Name on File
Last Sale	$825,000 (Mar 2012)
Tax Bill	$14,353 (2025)
Deeds & Mortgages	Jun 2018 Line of Credit
Flood Zone	Zone X (minimal risk)
APN	`1463-31-2-42-008`

Property Details

APN / Parcel Number

Primary APN	`1463-31-2-42-008`
Alternative APNs	`R0003313` `0003313`

Interior

Bedrooms	7 Beds
Full Baths	3.5 Baths
Half Baths	2 Half Baths
Total Rooms	6 Rooms
Units	5 Units
Building Area	2,660 sqft Living Area
Gross Area	3,898 sqft
1st Floor Area	1,496 sqft
Upper Floors Area	1,164 sqft
Basement Area	1,238 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1899
Effective Year Built	Effective 1982
Exterior Material	Combination
Construction Type	Masonry / Concrete Block
Lot Area	6,196 sqft (0.142 acres)
Garage Area	360 sqft
Porch	Porch
Porch Area	384 sqft
Deck Area	557 sqft

Utilities, Heating & Cooling

Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0003313
Street Address	1139 12TH ST
City	BOULDER
State	CO
Zip	80302-7172
Property Category	Residential
Property Type	Residential > Multi-Unit > Multi-Family Dwellings
Legal Description	LOTS 27-28 BLK 4 UNIVERSITY TERRACE
Legal Range	70
Legal Township	1N
Legal Section	31
Legal Subdivision	UNIVERSITY TERRACE - BO
Legal Block	4
Legal Lot Number	27
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	1
Census Block	1010
Census Tract	12401

Owner

Source: Boulder County records · APN 1463-31-2-42-008

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

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

Owner of Record	Company Name on File
Mailing Address	PO BOX 271028, LOUISVILLE, CO 80027-5018
Owner Type	Company
Vesting	Company

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Last Sale	Mar 02, 2012 · Amount on Record
Deed Sale	Mar 02, 2012 · Amount on Record
Prior Sale	Dec 12, 2003 · Amount on Record
Deed Document Number	20123206770
Prior Transfer Date	Jun 22, 2007
Prior Transfer Doc	0002864313
Record Updated	Sep 20, 2026

June 2018: Grant Deed, Mortgage

Document Type	Grant Deed
Jurisdiction	BOULDER CO
Recording Date	Jun 18, 2018
Property Address	1139 12TH ST, BOULDER, CO 80302-7172
Instrument Date	Jun 14, 2018
Instrument	3661179
Transaction Type	Mortgage
Record Updated	Jun 28, 2018
Title Company	LAND TITLE GUARANTEE

Transaction

Tax	$0.00
Additional	Multiple Parcels

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	PO BOX 271028 LOUISVILLE CO 800275018, LOUISVILLE, CO 80027-5018

Mortgage

Document Number	0003661179
Date	Jun 18, 2018
Instrument	3661179

Lender

Name	MIDFIRST BK
Type	Bank
Address	11001 N ROCKWELL AVE, OKLAHOMA CITY, OK 73162-2722

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	120 Months
Due	Jun 17, 2028

Interest

Rate Type	Adjustable Rate

Tax Assessment & Valuation

Source: Boulder County records · Assessment roll updated June 15, 2026 · Last verified August 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		$161,942 (+8.8%) Land $113,648 Building $48,294	$2,381,500 (-) Land $1,671,300 Building $710,200
2025	$14,353.00 (+13.02%)	$148,844 (-1.26%) Land $104,456 Building $44,388	$2,381,500 (+5.84%) Land $1,671,300 Building $710,200
2023	$12,700.00 (+31.01%)	$150,750 (+45.85%) Land $100,500 Building $50,250	$2,250,000 (+48.03%) Land $1,500,000 Building $750,000
2022	$9,694.00	$103,360 Land $62,424 Building $40,936	$1,520,000 Land $918,000 Building $602,000

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Boulder County (08013C), updated October 14, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 080130124011, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X
Special Flood Hazard Area	No
Flood Hazard	Minimal
500-Year Floodplain	No
Community Rating System	Class 5 (25% premium discount)
Nearby Flood Policies	2 in force

Wildfire

Wildfire Risk	Not rated no burnable land in reach
Wildfire Likelihood	Negligible
Exposure	None beyond ember reach

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.

Internet Providers

Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 367 locations within about half a mile of this property

Provider	Technology	Download / Upload (Mbps)
Ayva	Fixed Wireless (unlicensed)	2,500 / 2,500
Lumen Technologies	Fiber	2,000 / 1,000
Xfinity	Cable	2,000 / 250
Verizon	Fixed Wireless	300 / 20
Live Wire Networks	Fixed Wireless (licensed-by-rule)	250 / 100
T-Mobile USA	Fixed Wireless	100 / 20

May also be available at this address: AT&T, Lumen Technologies, Magnolia Road Internet Cooperative. Availability varies by address; speeds are provider-advertised maximums, not measured.