140 S 35th St, Boulder, CO 80305 Property Records

Boulder County property record for 140 S 35th St, Boulder, CO 80305

Property Summary

Property Type	Single Family Home
Details	2 bd · 1 ba · 1,326 sqft · built 1955
Lot Size	0.177 acres (7,728 sqft)
Owner	2 Individual Names on File
Last Sale	$410,000 (Jul 2014)
Tax Bill	$4,332 (2025)
Deeds & Mortgages	Jun 2021 Mortgage
Flood Zone	Zone X (moderate risk)
APN	`1577-05-3-07-004`

Property Details

APN / Parcel Number

Primary APN	`1577-05-3-07-004`
Alternative APNs	`R0011111` `0011111`

Interior

Bedrooms	2 Beds
Full Baths	1 Bath
Total Rooms	6 Rooms
Stories	1 Story
Building Area	1,326 sqft Living Area
1st Floor Area	1,326 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1955
Effective Year Built	Effective 1960
Architectural Style	Ranch
Exterior Material	Brick Veneer
Construction Type	Masonry / Concrete Block
Roof Material	Asphalt
Lot Area	7,728 sqft (0.177 acres)
Porch	Porch
Porch Area	145 sqft
Patio Area	216 sqft

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0011111
Street Address	140 S 35TH ST
City	BOULDER
State	CO
Zip	80305-5435
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 4 BLK 7 MARTIN ACRES 1
Legal Range	70
Legal Township	1S
Legal Section	05
Legal Subdivision	MARTIN ACRES 1 - BO
Legal Block	7
Legal Lot Number	4
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	2
Census Block	2019
Census Tract	12507

Owner

140 S 35th St is owned and occupied by two individuals who bought it in July 2014.

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	2 Individual Names on File
Mailing Address	140 S 35TH ST, BOULDER, CO 80305-5435
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jul 21, 2014 · Amount on File
Deed Sale	Jul 21, 2014 · Amount on File
Prior Sale	Aug 14, 1981
Deed Document Number	20143392750
Prior Transfer Date	Apr 27, 1998
Prior Transfer Doc	0001797448
Record Updated	Oct 29, 2026

June 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	140 S 35TH ST, BOULDER, CO 80305-5435
Transaction Type	Mortgage
Record Updated	Jun 11, 2021
Title Company	ASCENDANT TITLE CO

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003888968
Date	Jun 1, 2021
Instrument	3888968

Lender

Name	ELEVATIONS CU
Type	Credit Union
Address	BOULDER, CO 80301

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Jun 1, 2051

Tax Assessment & Valuation

The 2025 property tax bill for 140 S 35th St was $4,332.

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		$44,676 (-1.68%) Land $34,680 Building $9,996	$727,000 (-) Land $580,000 Building $147,000
2025	$4,332.00	$45,438 Land $36,250 Building $9,188	$727,000 Land $580,000 Building $147,000
2023	$4,169.00 (+10.85%)	$51,965 (+28.3%) Land $42,478 Building $9,487	$775,600 (+33.08%) Land $634,000 Building $141,600
2022	$3,761.00	$40,504 Land $31,504 Building $9,000	$582,800 Land $453,300 Building $129,500

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

FEMA maps place 140 S 35th St in Zone X, an area of moderate flood risk, within 500 ft of a high-risk flood zone.

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 moderate risk
500-Year Floodplain	Yes 0.2% annual chance
Nearest Special Flood Hazard Area	Zone AE, within 500 ft
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

Wildfire risk around 140 S 35th St is low, with a 0.01% annual chance of 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 451 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