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455 S 45th St, Boulder, CO 80305 Property Records

Boulder County property record for 455 S 45th St, Boulder, CO 80305 · Last verified June 2026

Property Summary

Property TypeSingle Family Home
Details3 bd · 1.75 ba · 1,629 sqft · built 1957
Lot Size0.157 acres (6,856 sqft)
OwnerCompany Name on File
Last Sale$42,800 (Oct 1976)
Tax Bill$4,714 (2025)
Deeds & MortgagesJan 2023 Transfer
Flood ZoneZone X (minimal risk)
APN1577-05-4-27-012

Property Details

APN / Parcel Number

Primary APN1577-05-4-27-012
Alternative APNs
  • R0011860
  • 0011860

Interior

Bedrooms3 Beds
Full Baths1.75 Baths
Half Baths1 Half Bath
Total Rooms5 Rooms
Stories1 Story
Building Area1,629 sqft Living Area
Gross Area2,370 sqft
1st Floor Area1,119 sqft
Basement Area1,020 sqft
Finished Basement510 sqft
Unfinished Basement510 sqft
Interior WallsWallboard/Drywall

Exterior

Year BuiltBuilt 1957
Effective Year BuiltEffective 1957
Architectural StyleRanch
Exterior MaterialBrick Veneer
Construction TypeMasonry / Concrete Block
Lot Area6,856 sqft (0.157 acres)
Garage TypeAttached
Garage Area231 sqft
Parking Spaces1 Parking Space
Patio Area450 sqft

Utilities, Heating & Cooling

Heating SystemForced Air with A/C

Location & Zoning

Account NumberR0011860
Street Address455 S 45TH ST
CityBOULDER
StateCO
Zip80305-6047
Property CategoryResidential
Property TypeResidential > Single Family > Home
Legal DescriptionLOT 12 BLK 10 MARTIN ACRES 2
Legal Range70
Legal Township1S
Legal Section05
Legal SubdivisionMARTIN ACRES 2 - BO
Legal Block10
Legal Lot Number12
JurisdictionBOULDER CO
Township / Civil DivisionBOULDER
Census Block Group3
Census Block3011
Census Tract12507

Owner

Source: Boulder County records · APN 1577-05-4-27-012

Assessment roll updated June 15, 2026 · Last verified June 2026

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

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

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed NamesVerified Name on Deed
Last SaleOct 15, 1976 · Amount on Record
Deed SaleOct 15, 1976 · Amount on Record
Deed Document Number1976196196
Last Transfer DateNov 21, 1995
Transfer Doc0001564097
Record UpdatedSep 20, 2026

January 2023: Intrafamily Transfer, Transfer

Document TypeIntrafamily Transfer
JurisdictionBOULDER CO
Recording DateJan 09, 2023
Property Address455 S 45TH ST, BOULDER, CO 80305-6047
Document Number0003994170
Instrument DateJan 05, 2023
Instrument3994170
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 records · Assessment roll updated June 15, 2026 · Last verified June 2026

Property Jurisdictions

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

Tax Bill & Assessment History

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

YearTax BillAssessed ValueAssessed Market Value
2026$52,870 (+8.8%) Land $37,148 Building $15,722$777,500 (-) Land $546,300 Building $231,200
2025$4,714.00 (+3.81%)$48,594 (-12.29%) Land $34,144 Building $14,450$777,500 (-5.97%) Land $546,300 Building $231,200
2023$4,541.00 (+10.65%)$55,402 (+27.67%) Land $40,012 Building $15,390$826,900 (+32.43%) Land $597,200 Building $229,700
2022$4,104.00$43,396 Land $29,677 Building $13,719$624,400 Land $427,000 Building $197,400

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Boulder County (08013C), updated October 14, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 080130125073, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood ZoneZone X
Special Flood Hazard AreaNo
Flood HazardMinimal
500-Year FloodplainNo
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 Storm
  • Severe Storms, Flooding, Landslides, And Mudslides, Sep 2013 · 5 claims

Wildfire

Wildfire RiskNot rated
no burnable land in reach
Wildfire LikelihoodNegligible
ExposureNone
beyond ember reach

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.

Internet Providers

Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 678 locations within about half a mile of this property

ProviderTechnologyDownload / Upload (Mbps)
AyvaFixed Wireless (unlicensed)2,500 / 2,500
Lumen TechnologiesFiber2,000 / 1,000
XfinityCable2,000 / 250
VerizonFixed Wireless300 / 20
Live Wire NetworksFixed Wireless (licensed-by-rule)250 / 100
T-Mobile USAFixed Wireless100 / 20

May also be available at this address: Lumen Technologies, AT&T. Availability varies by address; speeds are provider-advertised maximums, not measured.

Mobile Coverage

5G and 4G LTE

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