450 S 40th Street, Boulder, CO 80305
Property image
Property image
SOLD
FEB 20, 2026

$969,300

Trulia Estimate
  • 5 Beds
  • 3 Baths
  • 2,800 sqft

450 S 40th Street, Boulder, CO 80305

Martin Acres
Est. Refi. Payment $5,667/mo*
Refinance Your Home
Currently Off Market - Sold Feb 20, 2026 for $975,000 (5% below list price)

Home Value

Trulia Estimate
$969K
Since last month
Increased$4K (+0.4%)
Since last year
Decreased$104K (-9.7%)
Since last sale
Decreased$6K (-0.6%)
Learn more about this home's value by checking out its Trulia Estimate, the value of nearby homes, and how much similar homes have sold for.

Trulia Estimate

The of this home's value increased by +26% in the last 10 years
MonthEstimated value
2026
August 2026$969K
August 2026$967K
July 2026$965K
June 2026$969K
May 2026$973K
April 2026$975K
March 2026$979K
February 2026$975K
January 2026$994K
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016

Comparable sales

These are recently sold homes that have a similar location or other similar features to this home, like bedrooms, bathrooms, and square footage. Get a sense of the expected prices in the area by viewing these homes.
Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
450 S 41st St, Boulder, CO
0.05
Single-Family Home
$1,095,000
03/13/26
5
3
2,800
375 S 40th St, Boulder, CO
0.07
Single-Family Home
$1,175,000
04/24/26
6
3
2,800
345 S 38th St, Boulder, CO
0.15
Single-Family Home
$1,186,000
04/16/26
5
2.5
2,304
430 S 42nd St, Boulder, CO
0.10
Single-Family Home
$1,025,000
08/03/26
4
2
2,724
310 S 40th St, Boulder, CO
0.15
Single-Family Home
$1,199,000
06/18/26
4
2.5
2,524
615 S 42nd St, Boulder, CO
0.16
Single-Family Home
$1,320,000
07/31/26
5
3
2,228
650 S 45th St, Boulder, CO
0.30
Single-Family Home
$995,000
11/06/25
5
2.5
2,632
135 S 42nd Street, Boulder, CO
0.30
Single-Family Home
$970,000
06/12/26
5
2.5
2,214
405 S 43rd Street, Boulder, CO
0.13
Single-Family Home
$850,000
04/24/26
5
2
2,162

Nearby home prices

Get a sense of expected prices in the area by checking the value of nearby homes.
Address
Distance
Price
Bed
Bath
Sqft
Status
455 S 41st St, Boulder, CO 80305
0.03
$1,163,100
5
3
2,800
Off Market
450 S 41st St, Boulder, CO 80305
0.05
$1,095,000
5
3
2,800
Recently Sold
465 S 42nd St, Boulder, CO 80305
0.08
$986,600
5
3
2,800
Off Market
435 S 42nd Street, Boulder, CO 80305
0.08
$832,600
5
2.5
2,304
Off Market
380 S 40th St, Boulder, CO 80305
0.06
$1,167,000
5
3
2,800
Off Market
415 S 42nd St, Boulder, CO 80305
0.08
$1,145,000
4
3
2,500
Off Market
375 S 40th St, Boulder, CO 80305
0.07
$1,175,000
6
3
2,800
Recently Sold
560 S 41st St, Boulder, CO 80305
0.13
$1,261,300
3
2
2,273
Off Market
440 S 42nd Street, Boulder, CO 80305
0.10
$913,700
4
2
2,500
Off Market
430 S 42nd St, Boulder, CO 80305
0.10
$1,025,000
4
2
2,724
Recently Sold
505 S 43rd Street, Boulder, CO 80305
0.13
$851,300
4
2
1,929
Off Market

Local Information

  • Map ViewExplore the area around 450 S 40th Street.
  • Schools1 Preschool School1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Single-Family Home
Built in 1956
2,800 sqft
$348/sqft
1 Car Garage

About this House

Martin Acres gem with Flatiron views! Love where you live in this ideally located Martin Acres home where the Flatirons steal the show and convenience is second to none. Step inside and find an easy open flow between the living, dining, and kitchen areas. A rare wood-burning fireplace adds warmth and character while the bay window in the dining room perfectly frames those iconic mountain views. The kitchen shines with newer appliances and a stylish backsplash, ideal for casual mornings or entertaining friends. On the main level you will find three comfortable bedrooms, including a primary suite enhanced with updated lighting and a private bathroom. Downstairs, the spacious finished basement is a true bonus for movie nights, a game room, or space for guests. The second wood-burning fireplace adds cozy charm while two additional non-conforming bedrooms expand your options for a home office or studio. Recent updates include new gutters and a new basement escape window about three years old, offering peace of mind. Outside, a mature tree provides a shady retreat in the private backyard, perfect for quiet afternoons or casual gatherings. You will love the ease of getting around with Table Mesa shopping, dining, and transit just minutes away and a lovely neighborhood park an easy stroll from your front door. This is a rare opportunity in sought-after Martin Acres, a home with great bones, an unbeatable location, and that easy South Boulder lifestyle everyone is after. Experience the views, embrace the lifestyle, and make this Martin Acres gem your own!
450 S 40th Street, Boulder, CO 80305 is a 5 bedroom, 3 bathroom, 2,800 sqft single-family home in Martin Acres, built in 1956. It last sold for $975,000 on Feb 20, 2026 (5% below the $1,025,000 asking price). This property is not currently displayed as for sale or rent on Trulia. The Trulia Estimate is $969,300, with a rent estimate of $4,231/month.
Last check for updates: about 22 hours ago
Listed by Lex Campaldini, (720) 660-9491
Redfin Corporation
James Ayala, (303) 875-1536
Redfin Corporation
Bought with: Tavia Galvin, (720) 280-2269, RE/MAX Alliance - Olde Town
Co-Buyer's Agent: Nicki Thompson, (303) 725-1874, RE/MAX Alliance - Olde Town
Source: REcolorado as distributed by MLS GRID, MLS#4297182

Home Details for 450 S 40th Street

Interior Features

Interior Details
Basement: Bath/Stubbed,Exterior Entry,Finished,Interior EntryNumber of Rooms: 13Types of Rooms: Bedroom, Bathroom, Dining Room, Kitchen, Laundry, Living Room
Beds & Baths
Number of Bedrooms: 5Main Level Bedrooms: 3Number of Bathrooms: 3Number of Bathrooms (full): 2Number of Bathrooms (three quarters): 1Number of Bathrooms (main level): 2
Dimensions and Layout
Living Area: 2800 Square Feet
Appliances & Utilities
Utilities: Cable Available, Electricity Connected, Internet Access (Wired), Natural Gas Connected, Phone AvailableAppliances: Dishwasher, Dryer, Microwave, Oven, Refrigerator, WasherDishwasherDryerMicrowaveRefrigeratorWasher
Heating & Cooling
Heating: Forced Air,Natural GasHas CoolingAir Conditioning: Central AirHas HeatingHeating Fuel: Forced Air
Fireplace & Spa
Number of Fireplaces: 2Fireplace: Basement, Living RoomHas a Fireplace
Gas & Electric
Has Electric on Property
Windows, Doors, Floors & Walls
Window: Bay Window(s), Double Pane Windows, Window CoveringsFlooring: Carpet, Tile, WoodCommon Walls: No Common Walls
Levels, Entrance, & Accessibility
Stories: 1Levels: OneFloors: Carpet, Tile, Wood
View
Has a ViewView: Mountain(s)
Security
Security: Carbon Monoxide Detector(s), Radon Detector, Smoke Detector(s), Video Doorbell

Exterior Features

Exterior Home Features
Roof: CompositionPatio / Porch: PatioExterior: Private Yard, Rain Gutters
Parking & Garage
Number of Garage Spaces: 1Number of Covered Spaces: 1Other Parking: Off Street Spaces: 1No CarportHas a GarageHas an Attached GarageParking Spaces: 2Parking: Exterior Access Door,Lighted,Storage
Frontage
Not on Waterfront
Water & Sewer
Sewer: Public Sewer
Farm & Range
Not Allowed to Raise Horses
Finished Area
Finished Area (above surface): 1400 Square FeetFinished Area (below surface): 1260 Square Feet

Property Information

Year Built
Year Built: 1956
Property Type / Style
Property Type: ResidentialProperty Subtype: Single Family ResidenceStructure Type: HouseArchitecture: House
Building
Construction Materials: Brick, Wood SidingNot Attached Property
Property Information
Not Included in Sale: NoneParcel Number: R0009548

Price & Status

Price
List Price: $1,025,000Price Per Sqft: $348/sqft
Status Change & Dates
Off Market Date: Fri Jan 16 2026Possession Timing: Close Of Escrow

Active Status

MLS Status: Closed

Location

Direction & Address
City: BoulderCommunity: Martin Acres
School Information
Elementary School: CreeksideElementary School District: Boulder Valley RE 2Jr High / Middle School: ManhattanJr High / Middle School District: Boulder Valley RE 2High School: FairviewHigh School District: Boulder Valley RE 2

Building

Building Area
Building Area: 2800 Square Feet

Community

Not Senior Community

HOA

No HOA

Lot Information

Lot Area: 6913 sqft

Listing Info

Special Conditions: Standard

Offer

Contingencies: None KnownListing Terms: Cash, Conventional, FHA, VA Loan

Energy

Energy Efficiency Features: Thermostat

Mobile R/V

Mobile Home Park
Mobile Home Units: Feet

Business

Business Information
Ownership: Corporation/Trust

Miscellaneous

BasementMls Number: 4297182Attribution Contact: Lex.Campaldini@redfin.com, 720-660-9491Above Grade Unfinished Area: 1400Below Grade Unfinished Area: 140Showing Service Name: Showing Time

Price and Tax history

DateEventPrice
Feb 20, 2026
Source: REcolorado as distributed by MLS GRID #4297182
Sold
$975,000
Jan 16, 2026
Source: REcolorado as distributed by MLS GRID #4297182
Pending
$1,025,000
Nov 6, 2025
Source: REcolorado as distributed by MLS GRID #4297182
Listed For Sale
$1,025,000
Nov 19, 2021
Source: IRES as distributed by MLS GRID #953485
Sold
$967,500
Oct 19, 2021
Source: IRES as distributed by MLS GRID #953485
Listed For Sale
$949,500

Market trends in Boulder

Last updated August 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
$904K
$6.67KMoM
Sale-to-List Price
98.2%
0.2%MoM
Price per sq ft
$489
$10MoM
Available listings
765
3MoM

Around this home

Neighborhood Overview

Martin Acres
See Local Highlights
Neighborhood stats provided by third party data sources.

What Locals Say about Martin Acres

At least 18 Trulia users voted on each feature.

  • 91 % Say there are sidewalks

  • 90 % Say it's walkable to restaurants

  • 87 % Say there's wildlife

  • 83 % Say it's dog friendly

  • 81 % Say people would walk alone at night

  • 78 % Say it's walkable to grocery stores

  • 63 % Say car is needed

  • 60 % Say yards are well-kept

  • 59 % Say parking is easy

  • 50 % Say kids play outside

  • 46 % Say there's holiday spirit

  • 45 % Say neighbors are friendly

  • 43 % Say streets are well-lit

  • 33 % Say there are community events

  • 29 % Say they plan to stay for at least 5 years

  • 29 % Say it's quiet

Sourced by Trulia users. Learn more about our methodology.
  • Trulia User
    "There are great access to public transportation and lots of paths are maintained for biking or for walking"
    0
    Flag
  • Trulia User
    "On the bus line, easy commute! Walk to Table Mesa Shopping Center, King Soopers, Whole Foods, near NCAR, bike to CU."
    0
    Flag
  • Trulia User
    "We have neighborhood concerts/block parties. Really great way to connect and hear live music. We also have Farm to Bus, which is a farmer's market on a bus. They have fresh eggs and bread, as well as locally grown honey. There's a park nearby which is a great place to exercise abd chat with other neighbors."
    0
    Flag
  • Juliebfuller
    "Great kid friendly neighborhood . Great schools. Perfect for families. Easy to bike to many places and catch the bus "
    0
    Flag
  • Rachel B.
    "I've lived here for 4 years and absolutely love this neighborhood. People are friendly, there's mountain views, and it's a wonderful area to take walks and enjoy the outdoors"
    0
    Flag
  • Jake M.
    "I take the ff2 to Union station in Denver, then the 0. 75 minutes door to door. it's not bad at all! just a 10 min walk to the bus and one transfer."
    0
    Flag
  • Roni S.
    "The ideal location for students of families, it has amazing views and wonderful food! We haven’t lived here long and already feel at home!"
    0
    Flag
  • Karl B.
    "For anyone who wants to have easy access to hiking, biking and trail running the Martin Acres Community is an area to consider. Martin Park has a lot of bike paths that connect to other parts of Boulder. Within minutes via bike, car or bus you can be in downtown Boulder. For those who need to commute out of Boulder Hwy 36 is easy to get on to. Most of the homes are built of brick and many have been updated."
    1
    Flag
  • catidid100
    "Great area -- and easy access to Denver or Boulder/CU. The Park and Ride to Denver is a 5 minute walk from my house and the bus stop into Boulder is at the end of my street. Easy bike ride to CU and to downtown Boulder, great bike paths. Great neighborhood -- mix of college students, families, retirees, CU professionals. Active neighborhood association."
    0
    Flag

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Frequently asked questions about 450 S 40th Street

  • What is 450 S 40th Street estimated to be worth?
    Trulia's estimated value for 450 S 40th Street in Boulder, CO is $969,300.
  • What is the price history for 450 S 40th Street?
    450 S 40th Street in Boulder, CO last sold for $975,000 in February 2026.
  • Is Boulder a buyer's or seller's market?
    Boulder is currently a balanced market, based on recent for-sale activity.
  • What's the median sale price in Boulder?
    The median sale price in Boulder is $904K. That is up $6.67K from the prior month.
  • Does 450 S 40th Street have air conditioning?
    Yes, 450 S 40th Street in Boulder, CO has air conditioning.
  • Does 450 S 40th Street have laundry facilities?
    Yes, 450 S 40th Street in Boulder, CO has in-unit laundry.

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