Watchung zoning check

Enter a single-family lot in the R-R, R-A or R-B zone and see, line by line, whether the project meets the Borough's lot, yard, height, coverage and floor area limits. The check is free.

Covers the Borough of Watchung's single-family zones R-R, R-A and R-B, Somerset County. Checks a new house, an addition, an attached garage, a detached garage, a shed or a deck.

Numbers last checked October 9, 2026 against the Borough's online code, plus the 2026 ordinances not yet merged into it.

Zoning table for your drawings


ITEM	REQUIRED	EXISTING	PROPOSED	COMPLIES

ENC = existing nonconforming condition, not increased. * = relief required.

Prepared with a calculation aid. Not a zoning determination. Confirm every requirement with the municipal zoning officer.

What this does not check

Where the numbers come from

Terms of use

This is a calculation aid. It is not a zoning determination, a permit review, a survey, or legal, architectural or engineering advice, and it does not replace review by the municipal zoning officer or a licensed professional.
The numbers may be out of date, incomplete or wrong. Towns amend their zoning, and some towns here were entered from older schedules, as each town's page says. No one guarantees that any requirement shown is current or correct.
You are responsible for checking. Before you design, apply for a permit, buy property or build, confirm every requirement against the municipality's current code and with its zoning officer.
Not everything is checked. Each town's page lists what it leaves out. Other rules, such as easements, deed restrictions, environmental limits and historic review, can also affect a project.
No warranty. The site and its tables are provided as is, without warranties of any kind, express or implied.
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