What may fit
A practical first-pass answer for the home, rebuild, addition, ADU, or DADU you have in mind, including the size or configuration that appears most promising.
Free property fit check
Can this lot support the home you want?
Tell us what you want to build. We’ll show what appears to fit, where it may fit, what could get in the way, and what to confirm before you buy the property or pay for plans.
Built for Eastside and Seattle addresses.
- Free study
- No account
- Delivered by email
Start the free study
Four quick steps to a useful first answer.
Begin with the property. Most people finish the request in about two minutes.
A real Clyde Hill feasibility study
Needs confirmation before designA 3,213 sq ft coverage ceiling. Two street-facing setbacks to work around.
Explore the Clyde Hill residence study. It pairs real property maps with the numbers, unknowns, and next checks that matter. Public excerpt from September 10, 2026.
View the full sample feasibility study- What may fit
- A design within the total coverage ceiling, subject to site and City confirmation
- Main constraint
- Corner setbacks and the smaller-lot upper-building angle rule
- Best next move
- Confirm legal-lot and rebuild rules, then test a surveyed concept plan
Every study leads with one clear conclusion:Likely fitsMay fit with tradeoffsMore information needed
What you receive
A clear first answer to the property decision in front of you.
The study starts with your goal, then turns the relevant local rules, property information, and maps into three homeowner-friendly answers.
Where it may fit
Three property maps show the lot, terrain and sensitive areas, and an estimated buildable area after base setbacks.
What could get in the way
The report calls out the property conditions and local rules most likely to change the design, cost, or next decision.
How it works
Four quick steps. One useful property answer.
- 01Enter the property.
Use an address or King County parcel ID so we start with the right lot.
- 02Choose your goal.
Tell us whether you want a home, rebuild, addition, ADU, DADU, or another site project.
- 03Add what matters.
Share your target size and must-haves. Known concerns are optional.
- 04Get the study by email.
Most first-pass studies arrive in about five minutes, though public-source delays can take longer.
Made for local homeowners
Property questions change from one city and one lot to the next.
Build Eastside is designed around the home, rebuild, infill, addition, and ADU decisions common on the Eastside. Seattle properties are supported too.
Beaux Arts Village · Bellevue · Bothell · Clyde Hill · Hunts Point · Issaquah · Kirkland · Medina · Mercer Island · Newcastle · Redmond · Sammamish · Woodinville · Yarrow Point · Seattle
Before you start
What this study can and cannot tell you.
Is this the same as a city approval or professional feasibility study?
No. It is a source-backed first pass built from public records and mapped information. It helps you find the important questions sooner, but it does not replace a current survey, title review, code interpretation, engineering, architectural design, or a city decision.
Can I use it before buying a property?
Yes. The study is designed to help buyers identify likely capacity, site constraints, missing records, and potential cost drivers before committing more money. It is one input to due diligence, not a substitute for an inspection or professional review.
Will it tell me the largest ADU or DADU that may fit?
For an ADU study, we estimate the maximum likely range for one new two-story attached or detached ADU using the property facts and local rules available. Setbacks, building separation, trees, utilities, and survey geometry can still reduce the final size or change the best location.
What happens when a public record is missing or unclear?
We do not invent a precise answer. The report identifies the missing fact, explains why it matters, and tells you who or what can confirm it. For ADU studies, you can also confirm or correct the property information before the calculation starts.
Check a property