About Second Key
We help New York City homeowners turn underused space into beautifully designed ADUs (Accessory Dwelling Units), adding value, comfort, and opportunity to their properties.
Services Offered
Location & Service Area
New York and surrounding areas
Reviews(3)
Beautiful ADU
They converted our detached garage into a beautiful living space. The work quality is top-notch and the price was fair.
Custom ADUVery satisfied
Great experience from design to completion. They were knowledgeable about local ADU regulations and helped us maximize our space.
Garage ConversionBeautiful ADU
Great experience from design to completion. They were knowledgeable about local ADU regulations and helped us maximize our space.
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Factory-built ADUs delivered to your site. Modern designs from 400–1,200 sq ft. Turnkey installation included.