OUR SERVICES

ADU Services in NYC, End to End.

Our services protect your interests at each stage of the project: details before you commit, planning before you build, and oversight during construction.

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Feasibility Studies

Get a complete picture of what can be built on your property before you commit. Our ADU Feasibility Studies come with verified NYC zoning analysis, site assessments, cost estimates and preliminary design concepts.

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Pre-Construction

We assemble and coordinate your full project team of architects, engineers, and specialized consultants. By the time your permit is ready for filing with NYC DOB, you'll have a fixed budget, a detailed schedule, and no surprises heading into construction.

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Construction

As your NY-licensed general contractor, we execute the plan developed during Pre-Construction and deliver a move-in ready ADU.

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ADU construction planning and completed backyard cottage examples in NYC

WHO WE SERVE

One Property, Multiple Possibilities

Built for NYC homeowners ready to put their property to work.

Glass-walled ADU addition attached to a residential home for rental income
Family walking toward a detached ADU cottage for multigenerational living in NYC
Homeowners reviewing ADU plans to increase property value in NYC
Modern ADU interior for home office, studio, or flexible living space in NYC

BOOK A FREE ASSESSMENT

Ready to see what you can build?

Find out whether your property qualifies for an ADU, how much it will cost, and what comes next.

Get a free assessment
Backyard ADU in a NYC residential lot

Contact Info:

Email Second Key

info@secondkeynyc.com

Call Second Key

(646) 866-0067