840 Mapleton Ave, Boulder, CO 80304 Property Records

Boulder County property record for 840 Mapleton Ave, Boulder, CO 80304 · Last verified June 2026

Property Highlights

Property Type	Other > Exempt (Full or Partial)
Year Built	Built 1965
Square Footage	13,230 sqft
Lot Size	1.72 acres
Last Sale	$2,850,000 (2019)

Property Details

APN / Parcel Number

Primary APN	`1461-25-4-20-001`
Alternative APNs	`R0085593` `0085593`

Interior

Building Area	13,230 sqft
1st Floor	13,230 sqft 1st Floor
Stories	1 Stories

Exterior

Year Built	Built 1900
Effective Year Built	Effective 1965
Construction Type	Brick Construction
Lot Area	75,033 sqft

Utilities and HVAC

Cooling System	A/C Package Cooling
Heating System	HVAC Heating

Location & Zoning

Account Number	R0085593
Street Address	840 MAPLETON AVE
City	BOULDER
State	CO
Zip	80304-3952
Property Usage	Other Property Usage
Type	Other > Exempt (Full or Partial)
Legal Description	LOTS 1-5 BLK 152 SQUIRES ADDITION TO WEST BOULDER & OUTLOT 2 MAPLETON SUB
Legal Range	70
Legal Township	1N
Legal Section	30
Legal Subdivision	BOULDER O T EAST & WEST & NORTH - BO
Legal Block	152
Legal Lot Number	1
Jurisdiction	BOULDER CO
Minor Civil Division	BOULDER
Census Blockgroup	4
Census Block	4009
Census Tract	12101

Owner

Source: Boulder County records · APN 1461-25-4-20-001

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	Individual Owner on File
Mailing Address	6500 ARAPAHOE RD, BOULDER, CO 80303-1407
Owner Type	Owner is a Company

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Known Transactions	Last Sale Amount on Aug 29, 2019 Deed Sale Price on Aug 29, 2019
Deed Doc Number	20193733122
Record Refreshed	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, not market price estimates; both are a fraction of this property's market value.

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$1,110,538 (-3.7%) Land $1,043,276 Building $67,262	$4,271,300 (-) Land $4,012,600 Building $258,700
2025	Additional exemption filed	$1,153,251 (-3.23%) Land $1,083,402 Building $69,849	$4,271,300 (-) Land $4,012,600 Building $258,700
2023	Additional exemption filed	$1,191,692 Land $1,119,515 Building $72,177	$4,271,300 Land $4,012,600 Building $258,700