Loading...
Loading...
605 of 2,011 properties in Charleston are eligible for an accessory dwelling unit. 30.1% eligibility rate based on real NYC property data.
2,011
Total Properties
605
ADU Eligible
30.1%
Eligibility Rate
R3-1 / R3-2
Top Zones
3,556 ft²
Avg Lot Size
$2K–$2K
Est. Monthly Rent
Under NYC Local Laws 126 & 127 (City of Yes for Housing Opportunity), homeowners in eligible zoning districts can add an accessory dwelling unit to their property.
30.1% of Charleston properties qualify
Based on property data, here are the ADU types that Charleston homeowners can build.
Construct a standalone cottage in the rear yard. Up to 800 sq ft under NYC rules. Requires sufficient lot area and setbacks.
Build a new ADU attached to the existing home -- such as a side or rear addition. Shares at least one wall with the primary structure.
Convert existing basement or interior space into a self-contained dwelling unit with separate entrance, kitchen, bathroom, and sleeping area.
Estimated costs and rental income based on real data from eligible properties in Charleston.
$100,000 – $250,000
Est. Construction Cost
$1,500 – $2,200/mo
Est. Monthly Rent
$22,200/yr
Est. Annual Income
Estimates are based on aggregate data from eligible properties in Charleston. Actual costs vary by ADU type, size, site conditions, and finishes. Using HPD pre-approved plans can save $15,000–$40,000 on design costs.
Up to $395,000 in combined loans and grants (including up to $175,000 as a grant) for eligible Charleston homeowners. Must be owner-occupied, below 165% AMI, and commit to a 10-year rental period.
Based on our analysis of 2,011 properties in Charleston, Staten Island, 605 are eligible for an ADU under NYC Local Laws 126 & 127. That is a 30.1% eligibility rate. The most common zoning districts are R3-1, R3-2, R3X.
Properties in Charleston are eligible for Detached Backyard ADU, Attached ADU, Basement/Interior Conversion. The best option depends on your lot size (average in Charleston is 3,556 sq ft), existing structures, and budget. Use our eligibility checker for a personalized assessment.
Based on eligible properties in Charleston, estimated ADU construction costs range from $100,000 to $250,000. Actual costs depend on the ADU type, size, site conditions, and finishes. Using HPD pre-approved plans can save $15,000-$40,000 on design costs.
ADUs in Charleston, Staten Island can generate an estimated $1,500 to $2,200 per month in rental income. At $1,850 per month, that is approximately $22,200 per year in gross rental income.
Yes. The Plus One ADU Program offers up to $395,000 in combined loans and grants (including up to $175,000 as a grant) for eligible homeowners in Charleston and all NYC neighborhoods. You must be owner-occupied, below 165% AMI, and commit to a 10-year rental period. Applications are open until June 12, 2026.
Explore ADU eligibility in areas near Charleston.
Pleasant Plains
Staten Island
3,029
Properties
376
Eligible
12.4%
Rate
Rossville
Staten Island
2,736
Properties
504
Eligible
18.4%
Rate
Princes Bay
Staten Island
3,045
Properties
255
Eligible
8.4%
Rate
Huguenot
Staten Island
2,902
Properties
168
Eligible
5.8%
Rate
Arden Heights
Staten Island
5,414
Properties
1,844
Eligible
34.1%
Rate
Tottenville
Staten Island
4,466
Properties
321
Eligible
7.2%
Rate
Get an instant eligibility assessment for your specific address. Free, no sign-up required.