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!
Sold for $975,000
$975,000
450 S 40th Street, Boulder, CO 80305
5beds
2,800sqft
Single Family Residence
Built in 1956
6,913 Square Feet Lot
$968,400 Zestimate®
$348/sqft
$4,285 Estimated rent
Home value
$968,400
$901,000 - $1.04M
$4,285/mo
Zestimate® history
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List your homeWhat's special
Second wood-burning fireplaceMature treeStylish backsplashFlatiron viewsFinished basementPrivate backyardPrimary suite
Zillow last checked:
Listing updated:
Listed by:
Lex Campaldini 720-660-9491 Lex.Campaldini@redfin.com,
Redfin Corporation,
James Ayala 303-875-1536,
Redfin Corporation
Bought with:
Tavia Galvin, 100034928
RE/MAX Alliance - Olde Town
Nicki Thompson, 40033037
RE/MAX Alliance - Olde Town
Source: REcolorado as distributed by MLS GRID,MLS#: 4297182
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 5
- Bathrooms: 3
- Full bathrooms: 2
- 3/4 bathrooms: 1
- Main level bathrooms: 2
- Main level bedrooms: 3
Bedroom
- Description: Hardwood Flooring, Ensuite Bathroom, Ceiling Fan
- Features: Primary Suite
- Level: Main
- Area: 143 Square Feet
- Dimensions: 13 x 11
Bedroom
- Description: Hardwood Flooring
- Level: Main
- Area: 143 Square Feet
- Dimensions: 13 x 11
Bedroom
- Description: Hardwood Flooring
- Level: Main
- Area: 130 Square Feet
- Dimensions: 13 x 10
Bedroom
- Description: Carpet, Walk-In Closet, Non-Conforming, Ensuite Bathroom
- Level: Basement
- Area: 221 Square Feet
- Dimensions: 13 x 17
Bedroom
- Description: Carpet, Non-Conforming
- Level: Basement
- Area: 182 Square Feet
- Dimensions: 13 x 14
Bathroom
- Description: Tile Flooring
- Level: Main
- Area: 70 Square Feet
- Dimensions: 10 x 7
Bathroom
- Description: Tile Flooring, Step-In Shower
- Features: En Suite Bathroom
- Level: Main
- Area: 40 Square Feet
- Dimensions: 8 x 5
Bathroom
- Description: Tile Flooring
- Level: Basement
- Area: 35 Square Feet
- Dimensions: 5 x 7
Dining room
- Description: Hardwood Flooring, Formal Dining Space
- Level: Main
- Area: 325 Square Feet
- Dimensions: 13 x 25
Kitchen
- Description: Tile Flooring, Stainless Steel Appliances
- Level: Main
- Area: 140 Square Feet
- Dimensions: 14 x 10
Laundry
- Description: Side-By-Side Washer And Dryer, Sink
- Level: Basement
- Area: 130 Square Feet
- Dimensions: 13 x 10
Living room
- Description: Hardwood Flooring, Fireplace
- Level: Main
- Area: 182 Square Feet
- Dimensions: 13 x 14
Living room
- Description: Carpet, Fireplace
- Level: Basement
- Area: 455 Square Feet
- Dimensions: 13 x 35
Heating
- Forced Air, Natural Gas
Cooling
- Central Air
Appliances
- Included: Dishwasher, Dryer, Microwave, Oven, Refrigerator, Washer
Features
- Granite Counters, Primary Suite, Smoke Free, Sound System
- Flooring: Carpet, Tile, Wood
- Windows: Bay Window(s), Double Pane Windows, Window Coverings
- Basement: Bath/Stubbed,Exterior Entry,Finished,Interior Entry
- Number of fireplaces: 2
- Fireplace features: Basement, Living Room
- Common walls with other units/homes: No Common Walls
Interior area
- Total structure area: 2,800
- Total interior livable area: 2,800 sqft
- Finished area above ground: 1,400
- Finished area below ground: 1,260
Property
Parking
- Total spaces: 2
- Parking features: Exterior Access Door, Lighted, Storage
- Attached garage spaces: 1
- Details: Off Street Spaces: 1
Features
- Levels: One
- Stories: 1
- Patio & porch: Patio
- Exterior features: Private Yard, Rain Gutters
- Has view: Yes
- View description: Mountain(s)
Lot
- Size: 6,913 sqft
- Features: Many Trees, Near Public Transit, Sprinklers In Front, Sprinklers In Rear
Details
- Parcel number: R0009548
- Special conditions: Standard
Construction
Type & style
- Home type: SingleFamily
- Property subtype: Single Family Residence
Materials
- Brick, Wood Siding
- Roof: Composition
Condition
- Year built: 1956
Utilities & green energy
- Sewer: Public Sewer
- Water: Public
- Utilities for property: Cable Available, Electricity Connected, Internet Access (Wired), Natural Gas Connected, Phone Available
Green energy
- Energy efficient items: Thermostat
Community & neighborhood
Security
- Security features: Carbon Monoxide Detector(s), Radon Detector, Smoke Detector(s), Video Doorbell
Location
- Region: Boulder
- Subdivision: Martin Acres
Other
Other facts
- Listing terms: Cash,Conventional,FHA,VA Loan
- Ownership: Corporation/Trust
Price history
| Date | Event | Price |
|---|---|---|
| 2/20/2026 | Sold | $975,000-4.9%$348/sqft |
Source:  REcolorado as distributed by MLS GRID #4297182 Report a problem | ||
| 1/16/2026 | Pending sale | $1,025,000$366/sqft |
Source: REcolorado as distributed by MLS GRID #4297182 Report a problem | ||
| 11/6/2025 | Listed for sale | $1,025,000+5.9%$366/sqft |
Source: REcolorado as distributed by MLS GRID #4297182 Report a problem | ||
| 11/19/2021 | Sold | $967,500+1.9%$346/sqft |
Source:  IRES as distributed by MLS GRID #953485 Report a problem | ||
| 10/19/2021 | Listed for sale | $949,500+29.2%$339/sqft |
Source: IRES as distributed by MLS GRID #953485 Report a problem | ||
| 6/15/2017 | Sold | $735,000-1.3%$263/sqft |
Source: Public Record Report a problem | ||
| 5/10/2017 | Pending sale | $745,000$266/sqft |
Source: RE/MAX of Boulder, Inc #818700 Report a problem | ||
| 5/4/2017 | Listed for sale | $745,000+58.5%$266/sqft |
Source: RE/MAX of Boulder, Inc #818700 Report a problem | ||
| 5/17/2010 | Sold | $470,000-1.9%$168/sqft |
Source: Public Record Report a problem | ||
| 4/2/2010 | Price change | $479,000-2.8%$171/sqft |
Source: Karla Bielanski & Associates #620240 Report a problem | ||
| 2/20/2010 | Listed for sale | $493,000+14.9%$176/sqft |
Source: Karla Bielanski & Associates #620240 Report a problem | ||
| 7/19/2009 | Listing removed | $429,000$153/sqft |
Source: Listhub #580790 Report a problem | ||
| 9/27/2008 | Listed for sale | $429,000$153/sqft |
Source: Listhub #580790 Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | $6,496 +1.8% | $67,163 -12.4% |
| 2024 | $6,381 +16.1% | $76,701 -1% |
| 2023 | $5,497 +6.3% | $77,446 +32.6% |
| 2022 | $5,170 +4.1% | $58,387 -2.8% |
| 2021 | $4,967 | $60,067 +5.3% |
| 2020 | $4,967 +15.2% | $57,064 |
| 2019 | $4,314 | $57,064 +14.7% |
| 2018 | $4,314 | $49,752 -9.5% |
| 2017 | $4,314 +10.2% | $55,004 +21.6% |
| 2016 | $3,915 +5.6% | $45,229 +22.8% |
| 2015 | $3,708 +19.7% | $36,823 |
| 2014 | $3,096 +2% | $36,823 |
| 2013 | $3,034 +0.9% | $36,823 +1.7% |
| 2012 | $3,007 +37% | $36,218 |
| 2011 | $2,195 +7.1% | -- |
| 2010 | $2,050 -4.6% | $27,160 |
| 2009 | $2,148 +3.5% | $27,160 -19.1% |
| 2008 | $2,075 +8.9% | $33,570 |
| 2007 | $1,906 +3.9% | $33,570 +12.5% |
| 2006 | $1,835 -0.9% | $29,830 |
| 2005 | $1,852 +0.7% | $29,830 -1.6% |
| 2004 | $1,839 +5% | $30,310 |
| 2003 | $1,752 +10.3% | $30,310 +20.8% |
| 2002 | $1,588 | $25,100 -90.8% |
| 2001 | -- | $274,300 |
Find assessor info on the county website
Neighborhood: Martin Acres
Nearby schools
GreatSchools rating
- 9/10Creekside Elementary School At Martin ParkGrades: PK-5Distance: 0.3 mi
- 5/10Manhattan Middle School Of The Arts And AcademicsGrades: 6-8Distance: 1.1 mi
- 10/10Fairview High SchoolGrades: 9-12Distance: 0.9 mi
Schools provided by the listing agent
- Elementary: Creekside
- Middle: Manhattan
- High: Fairview
- District: Boulder Valley RE 2
Source: REcolorado as distributed by MLS GRID. 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
$968,400
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Estimated market value
$968,400
- Colorado
- Boulder County
- Boulder
- 80305
- Martin Acres
- 450 S 40th Street
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