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

Boulder County property record for 235 S 40th St, Boulder, CO 80305

Property Summary

Property TypeSingle Family Home
Details3 bd · 1.5 ba · 2,216 sqft · built 1956
Lot Size0.148 acres (6,427 sqft)
OwnerCompany Name on Record
Last Sale$46,800 (Jun 1977)
Tax Bill$4,740 (2025)
Deeds & MortgagesJan 2023 Transfer
Flood ZoneZone X (minimal risk)
APN1577-05-4-22-044

Property Details

APN / Parcel Number

Primary APN1577-05-4-22-044
Alternative APNs
  • R0013898
  • 0013898

Interior

Bedrooms3 Beds
Full Baths1.5 Baths
Half Baths1 Half Bath
Total Rooms5 Rooms
Stories1 Story
Building Area2,216 sqft Living Area
Gross Area2,524 sqft
1st Floor Area1,152 sqft
Basement Area1,152 sqft
Finished Basement1,064 sqft
Unfinished Basement88 sqft
Interior WallsWallboard/Drywall

Exterior

Year BuiltBuilt 1956
Effective Year BuiltEffective 1956
Architectural StyleRanch
Exterior MaterialBrick Veneer
Construction TypeMasonry / Concrete Block
Roof MaterialAsphalt
Lot Area6,427 sqft (0.148 acres)
Garage TypeAttached
Garage Area220 sqft
Parking Spaces1 Parking Space
Patio Area312 sqft

Utilities, Heating & Cooling

Heating SystemForced Air with A/C

Location & Zoning

Account NumberR0013898
Street Address235 S 40TH ST
CityBOULDER
StateCO
Zip80305-5415
Property CategoryResidential
Property TypeResidential > Single Family > Home
Legal DescriptionLOT 44 BLK 5 MARTIN ACRES 2
Legal Range70
Legal Township1S
Legal Section05
Legal SubdivisionMARTIN ACRES 2 - BO
Legal Block5
Legal Lot Number44
JurisdictionBOULDER CO
Township / Civil DivisionBOULDER
Census Block Group3
Census Block3006
Census Tract12507

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 RecordCompany Name on Record
Mailing Address7330 BUCKINGHAM CT, BOULDER, CO 80301-6409
Owner TypeCompany
VestingTrust, Living Trust

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed NamesName on Deed
Last SaleJun 9, 1977 · Amount on Record
Deed SaleJun 9, 1977 · Amount on Record
Prior SaleAug 23, 1973 · Amount on Record
Deed Document Number1977226856
Last Transfer DateNov 21, 1995
Transfer Doc0001564092
Record UpdatedOct 29, 2026

January 2023: Intrafamily Transfer, Transfer

Document TypeIntrafamily Transfer
JurisdictionBOULDER CO
Recording DateJan 9, 2023
Property Address235 S 40TH ST, BOULDER, CO 80305-5415
Document Number0003994169
Map ReferenceMB 6 PG 41
Instrument DateJan 5, 2023
Instrument3994169
Transaction TypeTransfer
Record UpdatedJan 17, 2023

Transaction

Tax$0.00
Amount AccuracyNo Consideration Stated
Additional
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipFamily Living Trust
Address7330 BUCKINGHAM CT, BOULDER, CO 80301-6409

Tax Assessment & Valuation

Source: Boulder County assessment roll, as of September 18, 2026

Property Jurisdictions

TypeName
StateColorado
CountyBoulder County
MunicipalityBoulder City
Unified School DistrictBoulder Valley School District RE-2 (PK - 12)

Tax Bill & Assessment History

YearTax BillAssessed ValueAssessed Market Value
2026$48,416 (-0.94%) Land $31,205 Building $17,211$782,000 (-) Land $528,900 Building $253,100
2025$4,740.00 (+3.36%)$48,875 (-12.61%) Land $33,056 Building $15,819$782,000 (-6.31%) Land $528,900 Building $253,100
2023$4,586.00 (+11.36%)$55,925 (+28.44%) Land $38,739 Building $17,186$834,700 (+33.23%) Land $578,200 Building $256,500
2022$4,118.00$43,541 Land $28,731 Building $14,810$626,500 Land $413,400 Building $213,100

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

Source: FEMA National Flood Hazard Layer, effective October 14, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it
Community Rating SystemClass 5 (25% premium discount)
Nearby Flood Policies6 in force
Nearby Flood Claims7 (1979–2022)
Claims Outside the SFHA5 of 7
Most Recent ClaimJul 2022 · rainfall accumulation
Claims by Event
  • Severe Storms, Flooding, Landslides, And Mudslides, Sep 2013 · 5 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 RiskLow
lower than 80% of the US · lower than 91% of Colorado
Wildfire Likelihood0.01% annual chance
ExposureNone
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 SystemCITY OF BOULDER
serves 166,080 people · EPA ID CO0107152
Water SourceSurface water
Last State InspectionSep 2024
Lead2 ppb (2023–2025)
action level 15 ppb

Violations Reported to EPA

Water QualityHaloacetic acids
resolved · Jul 2017
Treatment and ProcedureNone
last 10 years
Monitoring and Reporting1
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

ProviderMax 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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