540 S 40th St, Boulder, CO 80305 Property Records

Boulder County property record for 540 S 40th St, Boulder, CO 80305

Property Summary

Property Type	Single Family Home
Details	3 bd · 1.5 ba · 1,426 sqft · built 1957
Lot Size	0.163 acres (7,107 sqft)
Owner	Individual Name on Record
Last Sale	$383,000 (Mar 2012)
Tax Bill	$5,107 (2025)
Deeds & Mortgages	Jun 2020 Mortgage Sep 2019 Line of Credit + 1 more
Flood Zone	Zone X (minimal risk)
APN	`1577-08-1-07-031`

Property Details

APN / Parcel Number

Primary APN	`1577-08-1-07-031`
Alternative APNs	`R0012807` `0012807`

Interior

Bedrooms	3 Beds
Full Baths	1.5 Baths
Half Baths	1 Half Bath
Total Rooms	5 Rooms
Building Area	1,426 sqft Living Area
Gross Area	1,679 sqft
1st Floor Area	1,150 sqft
Basement Area	276 sqft
Finished Basement	276 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1957
Effective Year Built	Effective 1985
Architectural Style	Split Level
Exterior Material	Brick Veneer
Construction Type	Masonry / Concrete Block
Roof Material	Asphalt
Lot Area	7,107 sqft (0.163 acres)
Garage Type	Attached
Garage Area	253 sqft
Parking Spaces	1 Parking Space
Patio Area	216 sqft

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0012807
Street Address	540 S 40TH ST
City	BOULDER
State	CO
Zip	80305-5903
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 31 BLK 7 MARTIN ACRES 3
Legal Range	70
Legal Township	1S
Legal Section	05
Legal Subdivision	MARTIN ACRES 3 - BO
Legal Block	7
Legal Lot Number	31
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	3
Census Block	3005
Census Tract	12508

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	540 S 40TH ST, BOULDER, CO 80305-5903
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Jun 1, 2020	Deed of Trust, Mortgage · Conventional Mortgage SWBC MORTGAGE CORP
Sep 28, 2019	Deed of Trust, Mortgage · Line of Credit ELEVATIONS CU
Jul 21, 2017	Deed of Trust, Mortgage · Line of Credit ELEVATIONS CU

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Mar 26, 2012 · Amount on Record
Deed Sale	Mar 26, 2012 · Amount on Record
Prior Sale	Jul 5, 2007 · Amount on Record
Deed Document Number	20123211884
Prior Transfer Date	Dec 1, 2005
Prior Transfer Doc	0002743191
Record Updated	Oct 29, 2026

June 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	540 S 40TH ST, BOULDER, CO 80305-5903
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	CAPITAL TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003787710
Date	Jun 1, 2020
Instrument	3787710

Lender

Name	SWBC MORTGAGE CORP
Type	Mortgage Company
Address	SAN ANTONIO, TX 78216

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	240 Months
Due	Jun 1, 2040

September 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	540 S 40TH ST, BOULDER, CO 80305-5903
Document Number	0003740360
Instrument Date	Sep 28, 2019
Transaction Type	Mortgage
Record Updated	Oct 14, 2019
Title Company	NOT AVAILABLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	540 S 40TH ST BOULDER CO 803055903, BOULDER, CO 80305-5903

Mortgage

Document Number	0003740360
Date	Oct 3, 2019
Instrument	3740360

Lender

Name	ELEVATIONS CU
Address	BOULDER, CO 80301

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	240 Months
Due	Oct 2, 2039

Interest

Rate Type	Adjustable Rate

July 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	540 S 40TH ST, BOULDER, CO 80305-5903
Document Number	0003605443
Instrument Date	Jul 21, 2017
Transaction Type	Mortgage
Record Updated	Aug 2, 2017

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	540 S 40TH ST BOULDER CO 803055903, BOULDER, CO 80305-5903

Mortgage

Document Number	0003605443
Date	Jul 26, 2017
Instrument	3605443

Lender

Name	ELEVATIONS CU
Address	BOULDER, CO 80301

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	240 Months
Due	Jul 25, 2037

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		$53,523 (-0.09%) Land $27,486 Building $26,037	$857,100 (-) Land $474,200 Building $382,900
2025	$5,107.00 (+2.67%)	$53,569 (-12.6%) Land $29,638 Building $23,931	$857,100 (-6.31%) Land $474,200 Building $382,900
2023	$4,974.00 (+12.53%)	$61,292 (+28.76%) Land $35,021 Building $26,271	$914,800 (+33.57%) Land $522,700 Building $392,100
2022	$4,420.00	$47,600 Land $26,069 Building $21,531	$684,900 Land $375,100 Building $309,800

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	5 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 678 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.

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