1205 Mariposa Ave, Boulder, CO 80302 Property Records

Boulder County property record for 1205 Mariposa Ave, Boulder, CO 80302 · Last verified June 2026

Property Summary

Property Type	Single Family Home
Details	4 bd · 2.75 ba · 3,635 sqft · built 1954
Lot Size	0.399 acres (17,364 sqft)
Owner	Company Name on File
Last Sale	$150,000 (Aug 1978)
Tax Bill	$17,432 (2025)
Flood Zone	Zone X (moderate risk)
APN	`1577-06-2-27-003`

Property Details

APN / Parcel Number

Primary APN	`1577-06-2-27-003`
Alternative APNs	`R0007582` `0007582`

Interior

Bedrooms	4 Beds
Full Baths	2.75 Baths
Half Baths	1 Half Bath
Total Rooms	9 Rooms
Stories	1 Story
Building Area	3,635 sqft Living Area
1st Floor Area	3,635 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1954
Effective Year Built	Effective 1990
Architectural Style	Ranch
Exterior Material	Combination
Construction Type	Masonry / Concrete Block
Roof Material	Asphalt
Lot Area	17,364 sqft (0.399 acres)
Garage Type	Carport
Garage Area	342 sqft
Carport	Carport
Carport Area	342 sqft
Parking Spaces	1 Parking Space
Porch	Porch
Porch Area	16 sqft
Patio Area	2,022 sqft

Utilities, Heating & Cooling

Heating System	Hot Water

Location & Zoning

Account Number	R0007582
Street Address	1205 MARIPOSA AVE
City	BOULDER
State	CO
Zip	80302-7839
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 3 BLK 6 BELLEVUE PARK REPLAT
Legal Range	70
Legal Township	1S
Legal Section	06
Legal Subdivision	BELLEVUE PARK REPLAT - BO
Legal Block	6
Legal Lot Number	3
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	2
Census Block	2008
Census Tract	12505

Owner

Source: Boulder County records · APN 1577-06-2-27-003

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 Record	Company Name on File
Mailing Address	234 S 68TH ST, BOULDER, CO 80303-4305
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Last Sale	Aug 25, 1978 · Amount on Record
Deed Sale	Aug 25, 1978 · Amount on Record
Prior Sale	Aug 25, 1978
Deed Document Number	1978296090
Last Transfer Date	Mar 25, 1999
Transfer Doc	0001930549
Record Updated	Sep 20, 2026

Tax Assessment & Valuation

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

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

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$198,913 (+8.8%) Land $174,889 Building $24,024	$2,925,200 (-) Land $2,571,900 Building $353,300
2025	$17,432.00 (+8.25%)	$182,825 (-3.86%) Land $160,744 Building $22,081	$2,925,200 (+3.06%) Land $2,571,900 Building $353,300
2023	$16,104.00 (+15.28%)	$190,173 (+27.67%) Land $164,204 Building $25,969	$2,838,400 (+32.44%) Land $2,450,800 Building $387,600
2022	$13,970.00	$148,952 Land $134,057 Building $14,895	$2,143,200 Land $1,928,880 Building $214,320

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Boulder County (08013C), updated October 14, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X
Flood Hazard	Moderate
500-Year Floodplain	Yes
Special Flood Hazard Area	No
Nearest Special Flood Hazard Area	Zone AE, within 100 ft

Wildfire

Wildfire Risk	High above 74% of the US · above 72% of Colorado
Wildfire Likelihood	About 1 in 271 per year
Exposure	Direct burnable vegetation at the parcel

Values are read at the parcel center point; lenders make the official flood determination.