How to Choose a Long Island Masonry Contractor

Masonry work on Long Island is unforgiving. A patio built on 3 inches of base instead of 6 will heave in the first freeze cycle. A retaining wall without a proper geogrid will lean within two seasons. Here is what to verify before you hire.

1. Confirm licensing and insurance

Nassau County requires a Home Improvement License (Consumer Affairs) and Suffolk County requires a Home Improvement Contractor license. Ask for the license number, a Certificate of Insurance naming you as certificate holder, and Workers' Compensation coverage.

2. Look for ICPI or NCMA certification

The Interlocking Concrete Pavement Institute certifies installers who've been tested on base preparation, edge restraint, and compaction. The National Concrete Masonry Association covers segmental retaining walls. Either credential means the installer has been trained to a published standard.

3. Ask for the base and drainage spec in writing

• Excavation depth (patios: 8–10"; driveways: 12–16")
• Base material (typically 3/4" quarry process compacted in 2" lifts)
• Geotextile fabric between subgrade and base
• Pitch (minimum 1/8" per foot away from the house)
• Edge restraint (PVC or aluminum snap-lock)

4. Read the warranty carefully

Paver manufacturers warranty the paver itself for life. The installation is a separate warranty from the contractor — a serious Long Island masonry contractor offers at least 5 years on workmanship, including settlement.

5. Red flags

• No physical address or truck signage
• Cash-only, no written contract
• Deposit over 30% before materials arrive on site
• Vague base spec ("we'll put down some stone")
• No local references you can drive by