Detached Garage Cost in Long Island, NY
Detached Garage in Long Island costs $48–$113 per sq ft in 2026. A typical 576 sq ft project averages $41,760. Long Island pricing runs roughly 25% above the Northeast regional baseline.
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How much does a detached garage cost in Long Island, NY? In Long Island, a detached garage costs $27,360–$64,800 in 2026, with most homeowners paying around $41,760 for a typical 576 sq ft project.
- Per sq ft
- $48–$113
- Typical range
- $27,360–$64,800
- Average
- $41,760
- Labor share
- 50%
Long Island, NY Average Cost (2026)
What Drives Detached Garage Costs in Long Island
Permits & zoning
Long Island garage permits are issued by town or village building departments — Nassau and Suffolk counties have no county-level building code, so requirements vary by municipality. Most jurisdictions require a building permit for any detached garage, with fees typically $300–$700 and a 36-inch frost-depth footing requirement. HOA approval is required in many Long Island developments and can add 2–4 weeks.
Climate & construction
Long Island's coastal exposure means salt air accelerates corrosion on standard steel garage door hardware and fasteners near the shore — stainless or hot-dipped galvanized components are worth the upcharge within a mile or two of the water. Freeze-thaw cycling requires footings at the full 36-inch frost depth. Snow load design of 25–30 psf applies across Nassau and Suffolk.
Local market
Unlike NYC proper, a standard 20×20 two-car garage is the norm on Long Island's suburban single-family lots. Costs run 20–30% above the national average, with the South Shore and Hamptons at the higher end and inland Nassau County more moderate. Verify contractor license at the New York State licensing portal before signing.
Information reflects general guidance for Long Island, NY; permit fees, code requirements, and zoning rules change — always confirm with the local building department before starting work.
Cost Breakdown
Based on a 576 sq ft project in Long Island, NY. Actual costs vary by contractor, site conditions, and material choices.
Detached Garage Cost by Size in Long Island
288 sq ft, 576 sq ft, and 1,152 sq ft detached garage cost in Long Island, NY — the most common sizes (2026).
| Project size | Low | Mid | High |
|---|---|---|---|
| 288 sq ft | $13,680 | $20,880 | $32,400 |
| 576 sq ft | $27,360 | $41,760 | $64,800 |
| 1,152 sq ft | $54,720 | $83,520 | $129,600 |
Based on $48–$113 per sq ft in Long Island, NY. A 1-car garage is ~240 sq ft. A 2-car garage is ~576 sq ft.
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Rates shown are approximate averages as of 2025 and will vary based on your credit score, lender, and loan-to-value ratio. Consult a lender for an accurate quote.
Return on Investment
How much value does a detached garage add to your home at resale?
How Detached Garage compares to other projects
ROI figures based on Remodeling Magazine Cost vs. Value Report 2024, national averages. Actual resale value depends on your market, home price tier, and project quality.
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Frequently Asked Questions
How much does a detached garage cost in Long Island, NY?
In Long Island, NY, a typical 576 sq ft detached garage project costs between $27,360 and $64,800, averaging $41,760. Long Island pricing runs roughly 25% above the Northeast regional baseline.
How much does a 2-car garage cost in Long Island?
BuildCost's 576 sq ft default size is a 2-car garage — it typically costs $27,360–$64,800 in Long Island, NY, averaging $41,760.
Do I need a permit for a detached garage in Long Island?
Long Island garage permits are issued by town or village building departments — Nassau and Suffolk counties have no county-level building code, so requirements vary by municipality. Most jurisdictions require a building permit for any detached garage, with fees typically $300–$700 and a 36-inch frost-depth footing requirement. HOA approval is required in many Long Island developments and can add 2–4 weeks.
What detached garage size is typical in Long Island?
Unlike NYC proper, a standard 20×20 two-car garage is the norm on Long Island's suburban single-family lots. Costs run 20–30% above the national average, with the South Shore and Hamptons at the higher end and inland Nassau County more moderate. Verify contractor license at the New York State licensing portal before signing.
Does a detached garage add value to homes in Long Island?
Nationally, a detached garage recoups about 65% of its cost at resale. For a $41,760 project in Long Island, NY, that's approximately $27,144 in added home value. Resale recovery varies by neighborhood and current market conditions.
Detached Garage Calculators
Estimate exact costs and material quantities for your Long Island detached garage project.
Other Project Costs in Long Island
Detached Garage Cost in Other New York Cities
Or see the Detached Garage cost guide for all of New York.
Get Your Estimate
How big is your Detached Garage?
A 1-car garage is ~240 sq ft. A 2-car garage is ~576 sq ft.
Pro Tips
- Get at least 3 local contractor quotes
- Confirm permit requirements with the city
- Budget 10–20% contingency
- Check contractor license and insurance