2. 400 Mapleton Ave Boulder CO
400 Mapleton Ave Boulder CO

Report Results for

400 Mapleton Ave Boulder, CO

400 Mapleton Ave Boulder, CO 80304 was built in 1905 and last sold for $2,400,000. The property has a lot size of 6,794 Sq Ft lot and is listed as a Single Family. The property is currently not for sale. Current estimates place the value near 3,343,000, reflecting a 1% change over the past year, with 5 beds, 3 baths, and approximately 3,476 sq ft of living space. If you are looking to buy or rent a property, use USPhoneBook's property database to avoid rental scams, understand tax liabilities, and get a sense of the property's value over time. You can also check out the neighborhood section and see nearby homes, last sold for prices, tax records and more.
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Public Facts

$2,400,000
Last sold May 22, 2026
5
Beds
3
Baths
3,476
Sqft
Off Market
$3,343,000 estimated value
Built in 1905
$962/sqft
6,794 lot sqft

Property characteristics

Property type
Residential
Zoning type
Single Family
APN
R0006823
Parking
2
Subdivision
Mapleton - Bo
Heating
Hot Water
Cooling
Central
Stories
2

Property History

Over the last 12 months, the sales price of 400 Mapleton Ave Boulder, CO 80304 has increased by 1%.

Price History

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Year Price Price/Sq Ft
2026 $ 3,338,000 1 % $ 960
2025 $ 3,289,000 -7 % $ 946
2024 $ 3,553,000 13 % $ 1,022
2023 $ 3,127,000 3 % $ 900
2022 $ 3,017,000 21 % $ 868
2021 $ 2,488,000 ---- $ 716

Tax History

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Year Taxes Assesments
2026 ---- $ 242,624
2025 $ 21,344 2 %
2024 $ 20,761 1 %
2023 $ 20,401 30 % $ 236,229
2022 $ 15,689 ---- $ 168,941
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Owner

Luca Adams Luca F Adams , Age 20

Lives at 400 Mapleton AVE, Boulder, CO 80304-3983
Relatives: Adams Barbara, Allison Adams, Andrew Silver, Bert Adams, Ethan Silver, Frances Silver, Jason Adams, John Adams, Jon Adams
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People Living at 400 Mapleton Ave Boulder, CO

Luca Adams Luca F Adams , Age 20

Lives at 400 Mapleton AVE, Boulder, CO 80304-3983 Boulder CO 80304 400 Mapleton AVE
Prior addresses: 564 High Dr, Laguna Beach, CA 92651-1557 Laguna Beach CA 92651 564 High Dr
Relatives: Adams Barbara, Allison Adams, Andrew Silver, Bert Adams, Ethan Silver, Frances Silver, Jason Adams, John Adams, Jon Adams
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Lisa Nesmith Lisa Diane Nesmith , Age 65

Lives at 6931 Roaring Fork Trl, Boulder, CO 80301-3632 Boulder CO 80301 6931 Roaring Fork Trl
Prior addresses: 400 Mapleton Ave, Boulder, CO 80304-3983 Boulder CO 80304 400 Mapleton Ave 1630 30th St, Ste A, Boulder, CO 80301-1045 Boulder CO 80301 1630 30th St, Ste A Po Box 687, Weston, MA 02493-0004 Weston MA 02493 Po Box 687
Relatives: Betty Sill, Cameron Nesmith, Colleen Sill, James Nesmith, Lisa Nesmith, Malcolm Nesmith, Robert Sill, Steven Sill
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Laura Noce Laura Noce , Age 56

Lives at 2905 5th St, Boulder, CO 80304-3007 Boulder CO 80304 2905 5th St
Prior addresses: 400 Mapleton AVE, Boulder, CO 80304-3983 Boulder CO 80304 400 Mapleton AVE
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Thierry Lepoutre Thierry Lepoutre , Age 59

Lives at 2905 5th St, Boulder, CO 80304-3007 Boulder CO 80304 2905 5th St
Prior addresses: 400 Mapleton AVE, Boulder, CO 80304-3983 Boulder CO 80304 400 Mapleton AVE
Relatives: Nadia Lepoutre, Samuel Lepoutre
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Michael Delsesto Michael Steven Delsesto , Age 40

Lives at 139A Charles St, Unit 200, Boston, MA 02114-3252 Boston MA 02114 139A Charles St, Unit 200
Prior addresses: 4 Point Meadows Rd, Little Compton, RI 02837-1425 Little Compton RI 02837 4 Point Meadows Rd 400 Mapleton Ave, Boulder, CO 80304-3983 Boulder CO 80304 400 Mapleton Ave
Relatives: Lindsey Delsesto, Matthew Delsesto, Nancy Delsesto, Steven Delsesto, Elayne Sullivan, Jodie Camirand, Linda Filipp, Mark Filipp, Megan Donovan
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Kathryn Konecny Kathryn M Konecny , Age 43

Lives at 6441 Vickie Ln, Colorado Springs, CO 80923-4174 Colorado Springs CO 80923 6441 Vickie Ln
Prior addresses: 445 W Forest Trl, Vero Beach, FL 32962-4683 Vero Beach FL 32962 445 W Forest Trl 400 Mapleton AVE, Boulder, CO 80304-3983 Boulder CO 80304 400 Mapleton AVE
Relatives: Betty Chavez, Jody Konecny, Kristopher Chavez, Lisa Youmans, Nicholas Chavez, Peter Konecny
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Kenneth Wood Kenneth Wood , Age 83

Lives at 704 Mapleton Ave, Boulder, CO 80304-3990 Boulder CO 80304 704 Mapleton Ave
Prior addresses: 400 Mapleton AVE, Boulder, CO 80304-3983 Boulder CO 80304 400 Mapleton AVE
Relatives: Abigail Wood, Janet Wood, Kenneth Wood, Sarah Carr, Aaron Smith, Anne Sullivan, Britt Sax, Caroline Smith, Charles Smith
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Moreza Batagva Moreza R Batagva , Age 66

Lives at 46 Corniche Dr, Unit D, Dana Point, CA 92629-4069 Dana Point CA 92629 46 Corniche Dr, Unit D
Prior addresses: 21 Wightman Ct, Dana Point, CA 92629-4147 Dana Point CA 92629 21 Wightman Ct 929 Maxwell AVE, Apt 1, Boulder, CO 80304-4164 Boulder CO 80304 929 Maxwell AVE, Apt 1 400 Mapleton Ave, Boulder, CO 80304-3983 Boulder CO 80304 400 Mapleton Ave
Relatives: Natalie Batagva, Morteza Bataghva, Nasrin Bataghva, Abraham Samadpour, Mandred Bataghva, Roger Olander, Sharon Olander
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Natalie Batagva Natalie Dawn Batagva , Age 62

Lives at 46 Corniche Dr, Unit D, Dana Point, CA 92629-4069 Dana Point CA 92629 46 Corniche Dr, Unit D
Prior addresses: 67 Twin Brooks DR, Willow Grove, PA 19090-3903 Willow Grove PA 19090 67 Twin Brooks DR 400 Mapleton AVE, Boulder, CO 80304-3983 Boulder CO 80304 400 Mapleton AVE 3160 17th ST, Boulder, CO 80304-2618 Boulder CO 80304 3160 17th ST
Relatives: Moreza Batagva, Morteza Bataghva, Roger Olander, Sharon Olander, Nasrin Bataghva, Abraham Samadpour, Mandred Bataghva
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Neighbors

424 Mapleton Ave
Boulder, CO
View Property Report
2325 4th St
Boulder, CO
View Property Report
2385 4th St
Boulder, CO
View Property Report
403 Highland Ave
Boulder, CO
View Property Report

FAQs

Who lives at 400 Mapleton Ave, Boulder, CO 80304?
According to our records, the current person living in 400 Mapleton Ave is Luca Adams.
Is this property currently for sale?
The property is not for sale and last sold for $2,400,000 on May 22, 2026. Use USPhoneBook to review nearby listings or compare similar homes in the area.
What is the estimated value of this property?
The estimated value is $3,343,000, reflecting a 1% change over the past year. You can explore price history and tax records to see how the value has changed over time.
How big is this property?
It features approximately 3,476 sq ft of living space on a 6,794 sq ft lot, built in 1905 and classified as a Single Family.
What nearby properties can I compare this to?
Nearby homes include 424 Mapleton Ave, 2325 4th St, and 2385 4th St, each with its own property report to help compare size, value, and residents.