Can I build an ADU here?
Type your address. In about a minute you get the five things that decide it for your lot, read straight from the zoning law your town has actually adopted, each one citing its source. Free, and no account.
Five findings on your parcel, not a generic estimate.
Zoning
Whether your municipality allows an ADU on a lot like yours, and under what kind of approval. Read from the law it has actually adopted, not a summary of it.
Site
What the property records say about your lot: frontage and depth on the tax roll, and the property class on file.
Septic and utilities
Whether you are on municipal sewer and water, or on a system that brings its own rules with it.
Access
How the property is reached, and what the record says about the road and the frontage.
Overlays and environmental
Wetlands, floodplain, historic district, and the other layers that sit on top of zoning.
Each of the five is reported on its own, with the record it came from and how firmly that record supported it. There is deliberately no single overall score, because one number hides which of the five is the constraint that actually binds. You can print the report, save it, or send it to yourself.
Where the answers come from, and where they stop.
The starting point is always the latest zoning law your municipality has adopted. Where a town has passed something its published code has not caught up with yet, the check points at the law rather than the stale page. Around that it fills in the county zoning layer for your district, and county parcel and tax records for what the roll carries.
Every finding carries one of four certainty levels, and certainty describes how firmly the record supported the finding rather than how likely your project is to succeed. Where a record could not be reached, the check says so and names the document that would settle it.
Three questions are out of scope by design and are never answered here. Boundary location belongs to a licensed land surveyor. Septic capacity, design and routing belong to the county health department or a licensed engineer, so the check is a records read and nothing more. Anything subsurface is observed and referred, not judged.
This is a preliminary screening. It is not a survey, an engineering report, a permit, or a zoning approval, and it does not replace a pre-application conversation with your building department. It is the fastest honest read available before you spend money.
When the check leaves questions open, this is what closes them.
The free check reads what the public record says. The study answers what the record left open. Rootd files the records requests, asks the building department the questions the screening flagged, and captures your property in 3D so ADU options are tested against your actual site instead of a tax map.
You get one document with the buildable picture, the constraints that genuinely matter, and the sources behind each one, before anyone spends money on drawings.