450 S 40th St

Off Market

450 S 40th St

Boulder CO 80305

2660 sq. ft.

0.16 ac.

Single-Family

Last sold for $975,000

Lex Campaldini, last sold this property on 20 February 2026 after 105 days on market.

Overview

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!

Features

5 bedrooms

3 bathrooms

1 carspace

1 garage space

2660 sq. ft. floor area

0.16 ac. lot size

Single-Family

Estimated Value

Based on this property and similar 5 bedroom single-family properties sold in Boulder over the last 12 months, the estimated median property value of 450 S 40th St is $1.36m.

Median value

$1.36m

Estimated value range

$735k - $7.95m

Median days on market

Estimated value trend

19%

increase over the last 12 months

Average days on market is based on recent, comparable sales in Boulder. It is only an indication of the time a property is actively listed and should not be relied upon as an accurate representation of how soon a property will be sold.

Property history for 450 S 40th St

2026

Sold

$975,000

20 Feb 2026 by Lex Campaldini, of Redfin Corporation

2021

Sold

$967,500

19 Nov 2021 by Karen Bernardi, of Coldwell Banker Realty-Boulder

2017

Sold

$735,000

13 Jun 2017 by Steve Altermatt, of RE/MAX Of Boulder, Inc

Happy sellers in Boulder

We have insufficient information to provide an overview of customer satisfaction for Boulder. Viewing the agent profiles, reviews and sales for Boulder can provide insights for this location.

Local market activity for 5 bedroom single-family properties in Boulder

In the last 12 months, 31 five-bedroom single-family properties similar to 450 S 40th St, have been sold.

This represents a 13% increase in five-bedroom single-family properties sales when compared to the previous 12 months.

Sold

For Sale

Interested in selling?

People are reaching out to these agents in Boulder for a market analysis.

Analise Contreras

at St Vrain Realty LLC

(21 reviews)

Get a market analysis

Steffen Kaufman

at RE/MAX Professionals

(27 reviews)

Get a market analysis

Lisa Wade

at REMAX Of Boulder, Inc | Boulder

(54 reviews)

Get a market analysis

Candace Newlove-Marrs

at milehimodern - Boulder

Get a market analysis

Nearby agents

Compare and contact these top performing agents who’ve delivered exception customer service for their clients in Boulder

Analise Contreras

Analise Contreras is an award winning recommended agent for Boulder. They have 1 local sale and collected 1 local review across the last 12 months.

5 (21 reviews)
1 Review in Boulder
1 Sale in Boulder

View profile

Steffen Kaufman

Sellers who recommend Steffen Kaufman have praised them for being local expert, responsive, reliable, clear communication, supportive, great negotiation, and well-prepared