Local Law 152 Inspection Costs

Local Law 152 inspection costs depend primarily on the size and complexity of the building. Here are typical price ranges for 2026:

• Small buildings (1-10 units): $500 - $800. These buildings have limited gas piping runs and require fewer unit inspections, keeping costs low.
• Medium buildings (11-50 units): $800 - $1,500. The 50% unit sampling requirement means more apartments to access, and piping systems are more extensive.
• Large buildings (50+ units): $1,500 - $3,000+. Complex piping systems, multiple risers, and the need to inspect dozens of units drive costs higher.

These ranges represent the inspection fee only and do not include remediation costs if conditions are found during the inspection.

A standard Local Law 152 inspection fee typically includes the following:

• Licensed Master Plumber labor — The LMP and any supervised technicians performing the on-site inspection.
• Gas leak testing — Using approved detection methods to test all exposed gas piping for leaks.
• Visual inspection — Examination of all exposed gas piping from point of entry to appliance connections, including public spaces, hallways, and mechanical rooms.
• GPS-2 form preparation — Most inspectors include preparation of the official DOB certification form in their fee.
• Travel and mobilization — Transportation to the building and setup of inspection equipment.

Always confirm the scope of services in writing before scheduling. Some inspectors may charge separately for GPS-2 filing or follow-up visits.

Smart building owners and managers use several strategies to minimize LL152 compliance costs:

• Bundle multiple buildings — If you manage a portfolio, schedule inspections together. Most LMPs offer 10-20% volume discounts for multi-building engagements.
• Schedule proactively — Book inspections well before your community board deadline. Last-minute scheduling means premium pricing and limited inspector availability.
• Maintain your piping year-round — Regular maintenance reduces the likelihood of conditions being found, avoiding costly remediation and re-inspection fees.
• Coordinate tenant access in advance — Efficient access to units reduces the inspector's time on-site. Send notices early and have backup plans for unresponsive tenants.
• Use compliance management software — Platforms like KomplyOS help track deadlines, schedule inspections, and coordinate vendors across your portfolio, preventing costly last-minute scrambles.