Is a home built for co-ownership? Introducing the CoBuy Suitability Score™

Most homes flunk.

Not because they're small. Because they were built for one household: one primary suite, one kitchen, one front door. Co-ownership asks a different question, and almost no one has been grading for it.

The CoBuy Suitability Score™ does. It grades how well a home can actually host people who own it together, 0 to 100.

Size is a red herring. What matters is independence: a separate entrance, a second kitchen, a suite that stands on its own. A modest two-bedroom can outscore a sprawling five-bedroom. The fun is finding the ones that break the mold.

How the grade works

• A (90+) Highly Suitable, B (80 to 89) Suitable, C (70 to 79) Satisfactory, D (60 to 69) Unsuitable as-is, F (below 60).
• 0 to 100 across 11 dimensions, scored this way since 2018.
• It reads a home's living zones on five tiers, from a private Room to a fully independent Sovereign unit, using 12 checks anyone can make on a walkthrough.

One rule we won't bend: if a feature isn't verified, it doesn't count. A home's public score is a floor, never a ceiling. A listing can't talk its way to a better grade. That's protection for the buyer, not a marketing trick.

The homes that clear the bar, we call CoBuy-Suitable™.

First on the board: 10350 348th Ave SE, Snoqualmie, WA. Score: 93.5. An A. Genuinely built for this.

Next

• A public tool to score a home is coming. Join the waitlist.
• Agents: bring the Score to your clients as a CoBuy-certified™ Pro.

The homes are only half the story. How many people are buying together in the first place? Read the companion announcement: the CoBuy Co-ownership Index™.