602 Prospect St, Lyons, CO 80540 Property Records

Boulder County property record for 602 Prospect St, Lyons, CO 80540 · Last verified June 2026

Property Highlights

Property TypeResidential > Single Family > Home
Bedrooms2 Beds
Bathrooms2.5 Baths
Year BuiltBuilt 1990
Square Footage2,294 sqft Living Area
Lot Size10,684 sqft (0.245 acres)
OccupancyOwner Occupied
Last Sale$95,500 (1993)
Tax Bill$6,236.00 (2025)

Property Details

APN / Parcel Number

Primary APN1203-18-3-04-002
Alternative APNs
  • R0050307
  • 0050307

Interior

Bedrooms2 Beds
Full Baths2.5 Baths
Partial Baths1 Partial Baths
Total Rooms5 Rooms
Building Area2,294 sqft Living Area
1st Floor864 sqft 1st Floor
Upper Floors1,430 sqft Upper Floors
Stories2 Stories
Interior StructureWallboard/Drywall Interior Structure

Exterior

Year BuiltBuilt 1984
Effective Year BuiltEffective 1990
Architectural StyleA-Frame Style
Exterior MaterialWood Shingle Exterior
Construction TypeFrame Construction
Lot Area10,684 sqft (0.245 acres)
Parking Spaces2 Parking Spaces
Garage TypeCarport Garage
Garage Area506 sqft Garage
CarportCarport
Carport Area506 sqft Carport
Deck Area114 sqft Deck
PorchPorch
Porch Area146 sqft Porch

Utilities and HVAC

Heating SystemForced Air with Air Conditioning Heating

Location & Zoning

Account NumberR0050307
Street Address602 PROSPECT ST
CityLYONS
StateCO
Zip80540-8844
Property UsageResidential Property Usage
TypeResidential > Single Family > Home
Legal DescriptionS 25 FT LOT 10 & LOT 11 BLK 4 CRONA HEIGHTS SPLIT SEE ID 101772
Legal Range70
Legal Township3N
Legal Section18
Legal SubdivisionLYONS CRONA HEIGHTS - LY
Legal Block4
Legal Lot Number10
JurisdictionBOULDER CO
Minor Civil DivisionLONGMONT
Census Blockgroup2
Census Block2024
Census Tract13601

Owner

Source: Boulder County records · APN 1203-18-3-04-002

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 Record2 Individual Names on File
Mailing Address602 PROSPECT ST, LYONS, CO 80540-8844
OccupancyOwner Occupied
Owner TypeOwner is an Individual, Couple or Unincorporated Entity

Deeds, Mortgages & Sale History

DateDocument
Sep 10, 2025Deed of Trust, Mortgage · Line of Credit
USALLIANCE FCU
Dec 02, 2020Deed of Trust, Mortgage · Conventional Mortgage
GUARANTY HOME MORTGAGE CORP

Assessor's Deed Record

Deed Names2 Verified Names on Deed
Last SaleJun 01, 1993 · Amount on Record
Deed SaleJun 01, 1993 · Amount on Record
Prior SaleNov 17, 1988 · Amount on Record
Deed Doc Number19931298600
Record RefreshedSep 20, 2026

September 2025: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionBOULDER CO
Property Address602 PROSPECT ST, LYONS, CO 80540-8844
Transaction TypeMortgage
Record UpdatedSep 29, 2025
Title CompanyLAND TITLE GUARANTY COMPANY IN, LAND TITLE GUARANTEE COMPANY

Transferred To (Grantee/Buyer)

NameVerified Name
Address602 PROSPECT ST, LYONS, CO 80540-8844

Mortgage

Document Number0004101725
DateSep 10, 2025
Instrument4101725
Lender
NameUSALLIANCE FCU
TypeCredit Union
AddressLYONS, CO 80540
Agreement
TypeLine of Credit
AmountAmount Recorded
Interest
Rate TypeAdjustable Rate
Change FrequencyMonthly (Revolving credit lines are monthly unless stated otherwise).

December 2020: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionBOULDER CO
Property Address602 PROSPECT ST, LYONS, CO 80540-8844
Transaction TypeMortgage
Record UpdatedFeb 05, 2021
Title CompanyFIDELITY NATIONAL TITLE

Transferred To (Grantee/Buyer)

NameVerified Name

Mortgage

Document Number0003838111
DateDec 02, 2020
Instrument3838111
Lender
NameGUARANTY HOME MORTGAGE CORP
TypeMortgage Company
AddressFLINT, MI 48501
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term300 Months
DueDec 01, 2045

Tax Assessment & Valuation

Source: Boulder County records · Assessment roll updated June 15, 2026 · Last verified June 2026

Property Jurisdictions

TypeName
StateColorado
CountyBoulder County
MunicipalityLyons Town
Unified School DistrictSt. Vrain Valley School District RE 1J (PK - 12)

Tax Bill & Assessment History

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.

YearTax BillAssessed ValueAssessed Market Value
2026$56,664 (+8.8%) Land $5,372 Building $51,292$833,300 (-) Land $79,000 Building $754,300
2025$6,236.00 (-2.99%)$52,082 (-10.94%) Land $4,938 Building $47,144$833,300 (-4.53%) Land $79,000 Building $754,300
2023$6,428.00 (+17.32%)$58,478 (+31.57%) Land $4,583 Building $53,895$872,800 (+36.48%) Land $68,400 Building $804,400
2022$5,479.00$44,445 Land $4,198 Building $40,247$639,500 Land $60,400 Building $579,100

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