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An accessory dwelling unit (ADU), a granny flat, in-law suite, or backyard home, can add rental income or family space. Whether Maplewood allows one, and how big, comes down to the town’s zoning and your specific lot. Here’s what we know, and how to check yours.
We have not sourced Maplewood's zoning ordinance or its ADU rules yet, so we cannot say what Maplewood permits on your lot. That is our gap, not Maplewood's. Run your address to see what we hold for it today.
Sources: Maplewood Code 271-90A: 'One ADU shall be a permitted use in any residence or in any garage or accessory structure on the property lot'. 271-89: an ADU 'Constitutes an entirely self-contained portion of a principal, one-family dwelling, or is located in an accessory building on the same lot'. 271-90A(12): 'An accessory dwelling unit that is attached to the principal single-family dwelling shall utilize the same exterior materials and colors'. 271-90A(5): 'An ADU may not be situated or contained within a cellar.'; Maplewood Code 271-90A(4): 'In no case shall the ADU be more than 40% of the living area of a principal dwelling unit, no more than 800 square feet, nor less than 300 square feet, nor have more than two bedrooms.'; Maplewood Code 271-90A(4): 'In no case shall the ADU be more than 40% of the living area of a principal dwelling unit, no more than 800 square feet, nor less than 300 square feet'.
New Jersey has no single statewide ADU law. Each of the state's 564 municipalities, Maplewood (Essex County, NJ) included, sets its own zoning for accessory dwelling units (granny flats, in-law suites, backyard homes). Whether you can build one in Maplewood, how big, and how tall depends on the town's ordinance and your specific lot. We have not sourced Maplewood's zoning ordinance yet, so we cannot tell you what Maplewood permits on your lot. That is a gap in our record, not a finding about Maplewood. What we can do today is measure the lot itself: its dimensions, what already sits on it, and its flood exposure.
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Explore all modelsMaplewood sets its own ADU rules under New Jersey's home-rule system. Many NJ towns allow ADUs by right in residential zones; some require a variance. We have not sourced Maplewood's ordinance yet, so we cannot confirm what it permits. Run your Maplewood address and we will show you what we do hold for that lot, and say plainly what we do not.
A detached ADU in Maplewood typically runs $150,000 to $300,000+ all-in depending on size, site, and finishes. The build is financed and the rent helps carry the loan. You own the home.
Some NJ towns require owner-occupancy; others (like Jersey City) don't. We check Maplewood's specific ordinance for you when you run your address.
In Maplewood, an ADU can be up to 800 sq ft, or 40% of the main house, subject to your lot's size, coverage, and setbacks. (Source: Maplewood Code 271-90A: 'One ADU shall be a permitted use in any residence or in any garage or accessory structure on the property lot'. 271-89: an ADU 'Constitutes an entirely self-contained portion of a principal, one-family dwelling, or is located in an accessory building on the same lot'. 271-90A(12): 'An accessory dwelling unit that is attached to the principal single-family dwelling shall utilize the same exterior materials and colors'. 271-90A(5): 'An ADU may not be situated or contained within a cellar.'.) Run your Maplewood address to see the exact size your lot allows, free.
Enter your address and we read Maplewood’s zoning against your parcel and tell you if an ADU fits, how big, and what it could earn. Free.
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