Sold for $8,300,000

Street View

$8,300,000

1138 Flagstaff Rd, Boulder, CO 80302

5beds

2baths

1,578sqft

SingleFamily

Built in 1975

4.71 Acres Lot

$2,706,400 Zestimate^®

$5,260/sqft

$4,494 Estimated rent

Home value

$2,706,400

$1.95M - $3.68M

$4,494/mo

Zestimate^® history

Owner options

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$4,494/mo

Rent Zestimate^®

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$4,494/mo

Rent Zestimate^®

Refinance and save

$48,470/mo

Est. payment

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$48,470/mo

Est. payment

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What's special

1138 Flagstaff Rd, Boulder, CO 80302 is a single family home that contains 1,578 sq ft and was built in 1975. It contains 5 bedrooms and 2 bathrooms. This home last sold for $8,300,000 in December 2025. The Zestimate for this house is $2,706,400. The Rent Zestimate for this home is $4,494/mo.

Facts & features

Interior

Bedrooms & bathrooms

Bedrooms: 5
Bathrooms: 2

Heating

Forced air

Features

Basement: Finished

Interior area

Total interior livable area: 1,578 sqft

Property

Parking

Parking features: Garage - Detached

Features

Exterior features: Shingle, Wood, Brick

Lot

Size: 4.71 Acres

Details

Parcel number: 146136200038

Construction

Type & style

Home type: SingleFamily

Materials

Frame

Condition

Year built: 1975

Community & HOA

Location

Region: Boulder

Financial & listing details

Price per square foot: $5,260/sqft
Tax assessed value: $1,971,300
Annual tax amount: $37,067

Price history

Date	Event	Price
12/22/2025	Sold	$8,300,000$5,260/sqft
Source: Public Record Report a problem

Public tax history

Year	Property taxes	Tax assessment
2025	$37,067 +1.5%	$393,787 -6.9%
2024	$36,502 +2%	$422,869 +3.4%
2023	$35,803 +7.4%	$408,959 +12.7%
2022	$33,323 -10.6%	$362,843 -0.3%
2021	$37,288	$363,983 -6.6%
2020	$37,288 -6.8%	$389,883
2019	$40,020	$389,883 -7.3%
2018	$40,020	$420,536 -0.7%
2017	$40,020 +3.3%	$423,407 +5%
2016	$38,732 +6.2%	$403,340 +16.6%
2015	$36,476 +47%	$346,013 +137.9%
2008	$24,808 +2.7%	$145,460
2007	$24,160 +3.4%	$145,460 +3.7%
2006	$23,357 +11%	$140,250
2005	$21,034 +0.5%	$140,250 +3.7%
2004	$20,926 +2.9%	$135,220
2003	$20,338 +10.3%	$135,220 +2.2%
2002	$18,443	$132,350 -76.8%
2001	--	$571,600