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110 S 42nd St, Boulder, CO 80305 Property Records

Boulder County property record for 110 S 42nd St, Boulder, CO 80305

Property Summary

Property TypeSingle Family Home
Details3 bd · 1.5 ba · 1,426 sqft · built 1960
Lot Size0.177 acres (7,708 sqft)
Owner2 Individual Names on File
Last Sale$430,000 (Jul 2013)
Tax Bill$4,170 (2025)
Deeds & MortgagesApr 2020 Mortgage
Flood ZoneZone X (minimal risk)
APN1577-05-4-09-008

Property Details

APN / Parcel Number

Primary APN1577-05-4-09-008
Alternative APNs
  • R0013195
  • 0013195

Interior

Bedrooms3 Beds
Full Baths1.5 Baths
Half Baths1 Half Bath
Total Rooms5 Rooms
Building Area1,426 sqft Living Area
Gross Area2,254 sqft
1st Floor Area1,150 sqft
Basement Area851 sqft
Finished Basement276 sqft
Unfinished Basement575 sqft
Interior WallsWallboard/Drywall

Exterior

Year BuiltBuilt 1960
Effective Year BuiltEffective 1965
Architectural StyleSplit Level
Exterior MaterialBrick Veneer
Construction TypeMasonry / Concrete Block
Roof MaterialAsphalt
Lot Area7,708 sqft (0.177 acres)
Garage TypeAttached
Garage Area253 sqft
Parking Spaces1 Parking Space
Patio Area288 sqft

Utilities, Heating & Cooling

Heating SystemForced Air with A/C

Location & Zoning

Account NumberR0013195
Street Address110 S 42ND ST
CityBOULDER
StateCO
Zip80305-5537
Property CategoryResidential
Property TypeResidential > Single Family > Home
Legal DescriptionLOT 8 BLK 12 WILLIAM MARTIN HOMESTEAD
Legal Range70
Legal Township1S
Legal Section05
Legal SubdivisionWILLIAM MARTIN HOMESTEAD - BO
Legal Block12
Legal Lot Number8
JurisdictionBOULDER CO
Township / Civil DivisionBOULDER
Census Block Group1
Census Block1018
Census Tract12507

Owner

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 Record2 Individual Names on File
Mailing Address240 HOPI PL, BOULDER, CO 80303-3533
Owner TypeIndividual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names2 Names on Deed
Last SaleJul 9, 2013 · Amount on File
Deed SaleJul 9, 2013 · Amount on File
Prior SaleJun 15, 2006 · Amount on File
Deed Document Number20133325876
Prior Transfer DateApr 12, 2011
Prior Transfer Doc0003146242
Record UpdatedOct 29, 2026

April 2020: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionBOULDER CO
Property Address110 S 42ND ST, BOULDER, CO 80305-5537
Transaction TypeMortgage
Record UpdatedFeb 5, 2021
Title CompanyTITLE COMPANY OF THE ROCKIES

Transferred To (Grantee/Buyer)

NameVerified Name

Mortgage

Document Number0003781099
DateApr 30, 2020
Instrument3781099
Lender
NameCHERRY CREEK MORTGAGE CO INC
TypeMortgage Company
AddressENGLEWOOD, CO 80111
Agreement
TypeConventional Mortgage
AmountAmount on Record
Term241 Months
DueMay 1, 2040

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$41,995 (-2.08%) Land $29,966 Building $12,029$686,200 (-) Land $509,300 Building $176,900
2025$4,170.00 (-0.17%)$42,887 (-16.22%) Land $31,831 Building $11,056$686,200 (-10.18%) Land $509,300 Building $176,900
2023$4,177.00 (+6.45%)$51,188 (+23.5%) Land $38,880 Building $12,308$764,000 (+28.1%) Land $580,300 Building $183,700
2022$3,924.00$41,449 Land $28,988 Building $12,461$596,400 Land $417,100 Building $179,300

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 ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it
Flood Insurance CostPremium on File
median of 25 policies
Community Rating SystemClass 5 (25% premium discount)
Nearby Flood Policies25 in force
Nearby Flood Claims16 (1995–2013)
Claims Outside the SFHA2 of 16
Most Recent ClaimSep 2013 · Severe Storms, Flooding, Landslides, And Mudslides
Claims by Event
  • Severe Storms, Flooding, Landslides, And Mudslides, Sep 2013 · 14 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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