Blue Key Builds

Three Rivers, California · New build 2026

The Build Next Door

A three-bedroom main house and a 600-square-foot ADU on one lot, both opened this fall and both booked solid for their first two months.

One lot, two doors

The Three Rivers A-frame showed that the market supports premium rates. This build takes the same site, the same design discipline and the same operating team and applies them to a larger, higher-rate product, with a second unit on the same lot that adds revenue at very little added cost.

The main house has 3 bedrooms, 3 baths and about 2,000 square feet of glass, timber and black standing-seam metal, with a hot tub, a cedar sauna and a soaking tub set under the oaks. Built at roughly $300 a square foot, it cost about $600,000 and is valued on completion at $800,000.

The ADU shares the driveway and the views but rents as its own listing. It is 600 square feet, cost about $180,000 to build and is valued at $300,000. Together that is $780,000 in and roughly $1.1 million out, with $320,000 of equity created before the first guest.

3 / 3Bed / bath, main house
~2,000Sq ft, main house
600Sq ft ADU
$300Per sq ft to build
Hot tubCedar saunaSoaking tub under the oaksEV chargerWall of glassSeparate ADU listing

$550Main house nightly
$250ADU nightly
$320KEquity created
60 daysSold out at opening

Cost, value and rate figures are Blue Key Builds estimates as of September 2026; completion values are internal estimates, not appraisals.

The property

The market

Three Rivers listings grew 16.5% last year, a sign of a market that keeps drawing both guests and operators. A second door on land we already own is the most efficient way to grow with it.

Both calendars filled for September and October within days of listing. Combined, the two units open at $800 a night.

Cost to build vs. value on completion
Blue Key Builds estimates, September 2026. Listing growth: AirROI, Three Rivers, CA, Aug 2025 to Jul 2026.

Invest in the next Blue Key Builds project

Each project opens with roughly $150,000 in investor capital, equity created at completion, and monthly distributions once the property is operating.

The Blue Print

Every project, with its numbers.

Our investor newsletter: the photos, the owner statements and the plans behind each Blue Key Builds property. Leave your email and we will send you every issue.

No spam. Unsubscribe any time.