335 Auburn St, Boulder, CO 80305 Property Records

Boulder County property record for 335 Auburn St, Boulder, CO 80305

Property Summary

Property Type	Single Family Home
Details	4 bd · 2.25 ba · 2,335 sqft · built 1957
Lot Size	0.168 acres (7,311 sqft)
Owner	Individual Name on Record
Tax Bill	$6,889 (2025)
Deeds & Mortgages	May 2017 Line of Credit May 2018 Line of Credit
Flood Zone	Zone X (minimal risk)
APN	`1577-05-3-24-008`

Property Details

APN / Parcel Number

Primary APN	`1577-05-3-24-008`
Alternative APNs	`R0010986` `0010986`

Interior

Bedrooms	4 Beds
Full Baths	2.25 Baths
Half Baths	2 Half Baths
Total Rooms	8 Rooms
Stories	1 Story
Building Area	2,335 sqft Living Area
Gross Area	2,430 sqft
1st Floor Area	1,215 sqft
Basement Area	1,215 sqft
Finished Basement	1,120 sqft
Unfinished Basement	95 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1957
Effective Year Built	Effective 1980
Architectural Style	Ranch
Exterior Material	Brick Veneer
Construction Type	Masonry / Concrete Block
Lot Area	7,311 sqft (0.168 acres)
Garage Type	Detached
Garage Area	400 sqft
Parking Spaces	2 Parking Spaces
Porch	Porch
Porch Area	25 sqft
Patio Area	180 sqft

Utilities, Heating & Cooling

Heating System	Hot Water

Location & Zoning

Account Number	R0010986
Street Address	335 AUBURN ST
City	BOULDER
State	CO
Zip	80305-5301
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 8 BLK 22 HIGHLAND PARK 5
Legal Range	70
Legal Township	1S
Legal Section	05
Legal Subdivision	HIGHLAND PARK 5 - BO
Legal Block	22
Legal Lot Number	8
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	2
Census Block	2034
Census Tract	12505

Owner

Source: Boulder County records, as of September 18, 2026

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

Owner of Record	Individual Name on Record
Mailing Address	2336 22ND AVE, SAN FRANCISCO, CA 94116-2433
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
May 4, 2017	Deed of Trust, Mortgage · Line of Credit ELEVATIONS CU
May 12, 2018	Deed of Trust, Mortgage · Line of Credit ELEVATIONS CU

Assessor's Deed Record

Deed Names	Name on Deed
Record Updated	Oct 29, 2026

May 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	335 AUBURN ST, BOULDER, CO 80305-5301
Transaction Type	Mortgage
Record Updated	Feb 5, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003590325
Date	May 4, 2017
Instrument	3590325

Lender

Name	ELEVATIONS CU
Type	Credit Union
Address	BOULDER, CO 80301

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	240 Months
Due	May 3, 2037

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

May 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	335 AUBURN ST, BOULDER, CO 80305-5301
Document Number	0003656017
Instrument Date	May 12, 2018
Transaction Type	Mortgage
Record Updated	May 31, 2018

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	335 AUBURN ST BOULDER CO 803055301, BOULDER, CO 80305-5301

Mortgage

Document Number	0003656017
Date	May 17, 2018
Instrument	3656017

Lender

Name	ELEVATIONS CU
Address	BOULDER, CO 80301

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	240 Months
Due	May 16, 2038

Interest

Rate Type	Adjustable Rate

Tax Assessment & Valuation

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		$72,937 (+2.13%) Land $54,767 Building $18,170	$1,142,600 (-) Land $875,400 Building $267,200
2025	$6,889.00 (+16.35%)	$71,413 (-1.16%) Land $54,713 Building $16,700	$1,142,600 (+5.95%) Land $875,400 Building $267,200
2023	$5,921.00 (+16.44%)	$72,253 (+31.95%) Land $62,786 Building $9,467	$1,078,400 (+36.87%) Land $937,100 Building $141,300
2022	$5,085.00	$54,759 Land $46,183 Building $8,576	$787,900 Land $664,500 Building $123,400

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
Flood Insurance Cost	Premium on Record median of 34 policies
Community Rating System	Class 5 (25% premium discount)
Nearby Flood Policies	34 in force
Nearby Flood Claims	17 (1980–2015)
Claims Outside the SFHA	7 of 17
Most Recent Claim	May 2015 · Severe Storms, Tornadoes, Flooding, Landslides, And Mudslides
Claims by Event	Severe Storms, Flooding, Landslides, And Mudslides, Sep 2013 · 11 claims

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	Moderate above 53% of the US · lower than 63% of Colorado
Wildfire Likelihood	0.1% annual chance
Exposure	Direct burnable vegetation

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 515 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.

Nearby Properties on Auburn St

Nearby Streets

Search Property Records by Address or Parcel Number

Search by:

By searching, you agree to: Terms • Privacy • Disclosures