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Off market
  • $2,863,600

    421 Baseline Rd, Boulder, CO 80302

    5beds
    3,895sqft
    SingleFamily
    Built in 1956
    0.37 Acres Lot
    $2,863,600 Zestimate®
    $735/sqft
    $7,167 Estimated rent

    Home value

    $2,863,600

    $2.61M - $3.18M

    $7,167/mo

    Zestimate® history
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    $13,371/mo

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    What's special

    Lush secluded site on the very west of Baseline-small private spur at the foot of the Flatirons. Spectacular views. Designed and built by Boulder mid-century modernist commercial/residential architectural master, Hobart Wagener (Boulder Country Club, Williams Village Towers, Fairview High) for renowned mid-century Boulder commercial developer Robert Grayson (IBM, Boulder Dinner Theater, Ball Brothers) as his personal residence, this home has been Grayson family owned since new. Period architectural details with paneled, vaulted and beamed ceilings, retro kitchen, walls of glass, 3 fireplaces (gas) and over 4100 sq ft to work with. Sprawling ranch with a full walk-out lower level and incredible outdoor living spaces. All original condition and ready for a top to bottom renovation, this is an appealing example of 1950's modernism architecture. In its prime, the outdoor living spaces overlooked a forest of trees and flowering gardens with seasonal Gregory Creek flowing at the west edge of the property. 15,926 sq ft site with incredible Flatirons views, at the foot of Flagstaff Mountain, and right across from beautiful Chautauqua Park. Big square footage ready for your 21st century redesign. Please contact listing agent for interior pictures.

    This property is off market, which means it's not currently listed for sale or rent on Zillow. This may be different from what's available on other websites or public sources.

    Facts & features

    Interior

    Bedrooms & bathrooms
    • Bedrooms: 5
    • Bathrooms: 3
    • Full bathrooms: 1
    • 3/4 bathrooms: 2
    Heating
    • Forced air
    Cooling
    • None
    Appliances
    • Included: Dishwasher, Dryer, Washer
    • Laundry: In Unit
    Features
    • Basement: Finished
    Interior area
    • Total interior livable area: 3,895 sqft

    Property

    Parking
    • Parking features: Off-street, Garage
    Features
    • Exterior features: Shingle, Wood
    Lot
    • Size: 0.37 Acres
    Details
    • Parcel number: 146136430009

    Construction

    Type & style
    • Home type: SingleFamily
    Materials
    • Frame
    Condition
    • Year built: 1956

    Community & HOA

    Location
    • Region: Boulder

    Financial & listing details

    • Price per square foot: $735/sqft
    • Tax assessed value: $2,144,700
    • Annual tax amount: $12,162

    Price history

    DateEventPrice
    6/28/2023Sold$2,700,000-10%$693/sqft
    Source: IRES as distributed by MLS GRID #982962 Report a problem
    3/6/2023Listed for sale$3,000,000+106.9%$770/sqft
    Source: IRES as distributed by MLS GRID #982962 Report a problem
    10/8/2022Listing removed--
    Source: Zillow Rental Manager Report a problem
    9/21/2022Listed for rent$4,000+5.4%$1/sqft
    Source: Zillow Rental Manager Report a problem
    9/20/2017Listing removed$3,795$1/sqft
    Source: PG Rentals Report a problem
    8/23/2017Price change$3,795-5%$1/sqft
    Source: PG Rentals Report a problem
    7/17/2017Price change$3,995-2.6%$1/sqft
    Source: PG Rentals Report a problem
    7/4/2017Price change$4,100-6.7%$1/sqft
    Source: PG Rentals Report a problem
    6/14/2017Listed for rent$4,395+2.2%$1/sqft
    Source: PG Rentals Report a problem
    7/1/2016Listing removed$4,300+11.7%$1/sqft
    Source: Zillow Rental Manager Report a problem
    7/30/2015Listing removed$3,850$1/sqft
    Source: PG Rentals Report a problem
    7/10/2015Listed for rent$3,850$1/sqft
    Source: PG Rentals Report a problem
    1/13/2011Listing removed$1,450,000$372/sqft
    Source: Colorado Landmark, Realtors #634345 Report a problem
    7/16/2010Listed for sale$1,450,000+544.4%$372/sqft
    Source: Colorado Landmark, Realtors #634345 Report a problem
    9/30/1993Sold$225,000$58/sqft
    Source: Public Record Report a problem

    Public tax history

    YearProperty taxesTax assessment
    2025$12,162 +1.1%$134,043 -5.7%
    2024$12,026 +12.9%$142,073 -1%
    2023$10,656 +4.8%$143,452 +25.9%
    2022$10,165 +7.4%$113,946 -2.8%
    2021$9,468 $117,224 +7.8%
    2020$9,468 +12.3%$108,766
    2019$8,433 $108,766 +11.8%
    2018$8,433 $97,272 -9.5%
    2017$8,433 +18.2%$107,540 +30.5%
    2016$7,136 +5.6%$82,434 -6.3%
    2015$6,757 +0.5%$87,958
    2014$6,726 -3.2%$87,958
    2013$6,948 -7.9%$87,958 -3.2%
    2012$7,548 +5.2%$90,903
    2011$7,173 +7.1%--
    2010$6,698 +28.1%$88,750
    2009$5,230 +3.5%$88,750 -2.4%
    2008$5,052 +2.2%$90,890
    2007$4,941 -7.1%$90,890 +5.1%
    2006$5,320 -1%$86,470
    2005$5,371 +0.7%$86,470 -1.6%
    2004$5,333 -2.2%$87,910
    2003$5,456 -1.2%$87,910 +0.7%
    2002$5,524 $87,340 -90.8%
    2001-- $954,500
    Find assessor info on the county website

    Neighborhood: 80302

    Nearby schools

    GreatSchools rating
    Schools provided by the listing agent
    • Elementary: Flatirons
    • Middle: Manhattan
    • High: Boulder
    • District: Bldr Valley Dist RE2

    Source: The MLS. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.

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    Estimated market value
    $2,863,600
    Get a cash offer in 3 minutes
    Find out how much your home could sell for in as little as 3 minutes with a no-obligation cash offer.
    Estimated market value
    $2,863,600