ADU Construction cost per square foot in Yonkers
ADU Construction cost per square foot in Yonkers, New York in 2026.
Low
$193,500
Average
$290,300
High
$387,000
Yonkers crews quote about $325 – $645 per square foot.
Multiply local unit rates by your real measurements.
What drives adu construction prices in Yonkers
Local labor, permitting and climate move Yonkers prices away from the national average.
Labor market
Westchester labor prices just under NYC.
Permits
City permits with strict inspection requirements.
Climate
Cold winters and older housing stock drive repair costs.
Yonkers unit pricing by material
Ways to lower your Yonkers price
- Use pre-approved ADU plans where your city offers them — saves months and design fees.
- Detach only if required; attached and conversion ADUs cost far less.
- Collect three written bids on an identical scope — spreads of 20–40% are normal.
- Book in the off-season and stay flexible on the start date to save 5–15%.
- Bundle nearby work into one mobilization so you only pay setup and travel once.
- Ask what the contractor would change to cut 10% without hurting durability.
Yonkers questions
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