Gunbarrel – Twin Lakes / Stonegate: home prices, who is buying, and how homes really sell here

Updated September 2026 · Based on 154 recorded sales Jan 2021 – Sep 2026, 69 verified asking prices and 134 classified buyers

Photo: Valeriia Kryshchuk on Unsplash (Unsplash License)

Twin Lakes and Stonegate are the condo-and-townhome heart of Gunbarrel, the unincorporated suburb five miles north-east of Boulder, and the cheapest way to own a home with a Boulder address: a 2025–26 median of $320K for a condo and $610K for a house, against $948K for the city. It is also a competitive market at that price — homes list at market value, sell at 100% of asking in a median 36 days, and a third close over the asking price.

The neighborhood

Gunbarrel sits on the plain between the Diagonal Highway and the foothills, separated from Boulder proper by a couple of miles of farmland and open space. It grew up around the IBM plant that opened in the 1960s and filled in with subdivisions through the 1980s and 1990s. Most of it — including this sub-market — is unincorporated Boulder County rather than the City of Boulder: the county sheriff and county road crews rather than city departments, no city sales tax or city utility billing, and a Gunbarrel Public Improvement District, formed in 1993, that levies a small additional property tax to buy open space and improve roads. Annexation has been debated for decades and never settled. Buyers should also know that the area is laced with irrigation canals and reservoirs and carries meaningful flood risk in places; lenders may require flood insurance on specific parcels.

The sub-market is the western side of Gunbarrel, around the Twin Lakes open space — two irrigation reservoirs dating from 1910, now a county open-space property with flat looping trails, herons, turtles and a coyote chorus at dusk, and a view west to the Flatirons at sunset. The housing around the lakes is mostly attached: the Twin Lakes condominiums, the Stonegate townhome-style condos on Williams Fork Trail, and similar 1970s and 1980s complexes with one- to three-bedroom units of 625–1,250 sq ft, pools and clubhouses run by their associations. Between and beyond the complexes are 1970s ranches and split-levels on suburban lots. The median home that sold here since 2021 was built in 1976 and has 1,024 sq ft, two bedrooms and two baths — a condo, in other words — and 55% of sales are condos or townhomes.

Gunbarrel is car-oriented, but less so than it was: the LoBo Trail runs as a paved path to Longmont and connects to the Boulder Creek path system, RTD's 205 goes to downtown Boulder via Jay Road and the BOLT runs the Diagonal, and the brewery district around Avery Brewing, Celestial Seasonings and the Gunbarrel Center shops are a short ride. Schools are Heatherwood Elementary, Platt Middle and Boulder High. Turnover is around 25 sales a year.

Where Gunbarrel – Twin Lakes / Stonegate is

Map centered on the 150 geocoded sales in assessor neighborhood 130; the neighborhood boundary is the Boulder County Assessor's appraisal area, not a formal city boundary.

Homes and prices in Gunbarrel – Twin Lakes / Stonegate

This is Boulder's condo tier. The blended 2025–26 median of $345K is 64% below the city's, and the $345 per square foot is 37% below Boulder's $552 — the deepest per-foot discount of any Boulder sub-market with this many sales. The two products are far apart: condos and townhomes, 55% of sales, have a median of $320K, while the houses on the surrounding streets have a median of $610K, still a third below the Boulder median for a detached home on a suburban lot. The middle half of all sales fell between $311K and $605K, and the highest recorded sale since 2021 was $931K, so every sale here since 2021 has closed inside the Ownify Home Fund's $1M ceiling (2% down).

The typical home sold in 2025–26 has 2 bedrooms, 2 baths and 1,024 sq ft, on a 3,240 sq ft lot; the median build year is 1976, with 0.0% of homes built before 1950 and 0.0% since 2000. Prices run from $255K to $931K.

Median sale price by year

Single-family houses   Condos & townhomes   (labels: sales per year, houses / condos)

Medians move with the mix of what sold each year (a run of large rebuilds lifts the house number); a bar is omitted when fewer than three of that type sold. Read the trend, not single-year steps.

What it takes to buy here

At the 2025–26 median of $345,000, a conventional purchase with 20% down at a 6.76% 30-year rate costs about $2,051 a month including taxes and insurance, which lenders would typically want to see backed by a household income near $87,888 and roughly $75,900 in cash at closing. 8.2% of all Boulder sales in 2025–26 closed below this neighborhood's median.

Who is buying in Gunbarrel – Twin Lakes / Stonegate

Buyers here are the people who work in Boulder's institutions and cannot pay Boulder's prices. University and research buyers are the largest group at 16.4% (Boulder 12.4%), tech matches the city at 15.7%, and the sector that stands out is K-12 education: primary and secondary school employees are 6% of buyers, more than double their 2.8% share city-wide, alongside government buyers at 5.2% against 2.8%. Finance (3.7% against 5.8%), legal and real-estate buyers are under-represented — the higher-earning sectors that concentrate in central Boulder are thin here. 13% of purchases are cash, well below Boulder's 20.5%; this is a financed market of first homes.

Share of 134 classified buyers on 105 transactions with an identified employer; industry attribution only, no individual buyer identified.

How Gunbarrel – Twin Lakes / Stonegate prices — and how to play it

A   Ownify competitiveness index 84 / 100 — the highest grade Ownify assigns, which in Boulder means sells at or over asking: homes with these characteristics in this sub-market are expected to close at or above the asking price more often than almost anywhere else in the city. At this price point the buyer pool is deep and the competition is for the well-kept unit, not the address.

If you are selling

The Twin Lakes convention is to list at market value — a median ask of 100.4% of value — and the market clears it: the median sale is 100% of asking, and 32% of sales close over ask against 25% for Boulder as a whole. Ownify's Boulder model puts the probability of selling in the listing at 90% for an ask at the convention, 88% at 108% of value and 86% at 112%. The odds are flat, so the cost of a bolder ask is measured in days rather than in whether it sells: Boulder listings at or below 105% of value take a median 38 days, 110–120% take 49, and above 120% take 55. With 93% of the asking price passing through to the sale price, the right default is at value or 2–3% over; in a $320K condo market, over-asking bids are a few thousand dollars, not tens of thousands, so a high ask is not covered by the bidding the way it can be in a house market.

What moves a condo here is the association as much as the unit: reserves, any special assessment, rental restrictions and the age of the roofs and siding are the first questions a lender and a buyer will ask, and complexes with clean financials sell faster. 19% of listings are still on the market after 60 days, most of them units with an association issue, a ground-floor location by a parking lot or an unrenovated interior priced as if it were renovated.

If you are buying

Buyers have a little more room here than in Martin Acres but not much: 45% of sales close under asking, 32% close over, and 19% of listings survive 60 days. A unit that is freshly listed at value in a well-run complex will draw multiple offers, so bid at asking with clean financing; a unit that has sat four to six weeks is where a 3–5% discount is realistic, and the reason it sat is usually visible in the association documents. This is where the Ownify Home Fund goes furthest in Boulder: 100% of sales here since 2021 closed under its $1M ceiling. With a condo median of $320K, a 2% Ownify down payment is about $6,400 in cash against roughly $70,000 for a conventional 20% down purchase plus closing costs, and houses at the $610K median qualify too. Only 13% of purchases here are cash, so a financed offer is the norm rather than the exception.

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