1129 11th St, Boulder, CO 80302 Property Records

Boulder County property record for 1129 11th St, Boulder, CO 80302

Property Summary

Property Type	Multi-Family Dwellings
Details	7 bd · 5 ba · 3,429 sqft · built 1909
Lot Size	0.143 acres (6,229 sqft)
Owner	2 Company Names on Record
Last Sale	$2,076,838 (Apr 2025)
Tax Bill	$11,524 (2025)
Deeds & Mortgages	Dec 2021 Sale Nov 2020 Transfer
Flood Zone	Zone X (minimal risk)
APN	`1463-31-2-41-012`

Property Details

APN / Parcel Number

Primary APN	`1463-31-2-41-012`
Alternative APNs	`R0003476` `0003476`

Interior

Bedrooms	7 Beds
Full Baths	5 Baths
Total Rooms	20 Rooms
Units	5 Units
Building Area	3,429 sqft Living Area
Gross Area	3,693 sqft
1st Floor Area	1,695 sqft
Upper Floors Area	999 sqft
Basement Area	999 sqft
Finished Basement	735 sqft
Unfinished Basement	264 sqft
Interior Walls	Plaster

Exterior

Year Built	Built 1909
Effective Year Built	Effective 1933
Exterior Material	Combination
Construction Type	Masonry / Concrete Block
Lot Area	6,229 sqft (0.143 acres)
Garage Type	Detached
Garage Area	336 sqft
Porch	Porch
Porch Area	80 sqft
Patio Area	200 sqft

Utilities, Heating & Cooling

Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0003476
Street Address	1129 11TH ST
City	BOULDER
State	CO
Zip	80302-6954
Property Category	Residential
Property Type	Residential > Multi-Unit > Multi-Family Dwellings
Legal Description	LOTS 24-25 BLK 3 UNIVERSITY TERRACE
Legal Range	70
Legal Township	1N
Legal Section	31
Legal Subdivision	UNIVERSITY TERRACE - BO
Legal Block	3
Legal Lot Number	24
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	1
Census Block	1011
Census Tract	12401

Owner

Source: Boulder County records, as of August 13, 2026

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

Owner of Record	2 Company Names on Record
Mailing Address	541 SPRUCE ST, BOULDER, CO 80302-5015
Owner Type	Company
Vesting	Limited Liability Partnership

Deeds, Mortgages & Sale History

Date	Document
Dec 22, 2021	Beneficiary Deed, Transfer
Nov 25, 2020	Quit Claim Deed, Transfer NOT AVAILABLE

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Apr 14, 2025 · Amount on Record
Deed Sale	Apr 14, 2025 · Amount on Record
Prior Sale	Apr 6, 1973 · Amount on Record
Deed Document Number	20254083104
Prior Transfer Date	Dec 16, 2021
Prior Transfer Doc	0003936200
Record Updated	Sep 20, 2026

December 2021: Beneficiary Deed, Transfer

Document Type	Beneficiary Deed
Jurisdiction	BOULDER CO
Recording Date	Dec 22, 2021
Property Address	1129 11TH ST, BOULDER, CO 80302-6954
Document Number	0003936200
Instrument Date	Dec 16, 2021
Instrument	3936200
Transaction Type	Transfer
Record Updated	Apr 15, 2022

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4310 RANGEVIEW DR, BILLINGS, MT 59106-4735

November 2020: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	BOULDER CO
Recording Date	Nov 25, 2020
Property Address	1129 11TH ST, BOULDER, CO 80302-6954
Document Number	0003836415
Instrument Date	Nov 24, 2020
Instrument	3836415
Transaction Type	Transfer
Record Updated	Dec 24, 2020
Title Company	NOT AVAILABLE

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	3836 26TH ST BOULDER CO 803041352, BOULDER, CO 80304-1352

Tax Assessment & Valuation

Source: Boulder County assessment roll, as of June 15, 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		$126,894 (+8.8%) Land $113,954 Building $12,940	$1,866,100 (-) Land $1,675,800 Building $190,300
2025	$11,524.00 (+2.42%)	$116,632 (-10.03%) Land $104,738 Building $11,894	$1,866,100 (-3.56%) Land $1,675,800 Building $190,300
2023	$11,252.00 (+3.04%)	$129,638 (+14.16%) Land $115,769 Building $13,869	$1,934,900 (+15.86%) Land $1,727,900 Building $207,000
2022	$10,920.00	$113,560 Land $75,140 Building $38,420	$1,670,000 Land $1,105,000 Building $565,000

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	2 in force

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	0.01% 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 367 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 · DSL in parts of the area	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

May also be available: AT&T, Magnolia Road Internet Cooperative.

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