Windsor Environmental
New York City apartment buildings

Lead paint testing and XRF inspections

For a rental compliance deadline, a violation, a new baby, or a renovation in an older building, certified inspectors test every painted surface with XRF and give you the report you need.

  • Licensed in New York & New Jersey
  • NYC DEP-certified investigators
  • EPA-certified lead professionals
  • Fully insured, COIs on request
  • Free in-person estimates

Lead paint is common in homes and buildings built before 1978, and in New York and New Jersey there are clear legal requirements to test rental units. An XRF analyzer reads lead levels through the layers of paint without damaging the surface, room by room and component by component.

We test single apartments and houses as well as whole buildings and portfolios, and give you organized reports you can file, keep, or hand to a contractor.

What’s included

  • XRF testing by EPA-certified inspectors and risk assessors
  • Testing at the 0.5 mg/cm² level NYC requires
  • Unit and common-area testing for multifamily buildings
  • Lead dust wipe sampling and clearance testing
  • Lead-safe certificate inspections for New Jersey rentals (visual or dust wipe)
  • Reports for HPD exemptions, landlord records, buyers and contractors
  • A remediation quote for positive components, if you want one
Peeling layers of old paint on a wall

When people call us

  • NYC Local Law 31 XRF compliance for rental units
  • HPD lead paint violations
  • A child under 6 living in, or moving into, the unit
  • NJ rental lead-safe certificates at tenant turnover
  • Renovations in pre-1978 homes
  • Child care centers and schools
  • Buying or selling an older building

Requirements we test for

  • NYC Local Law 31: rental units and common areas in pre-1960 buildings (and some 1960–1978 buildings and 1–2 family rentals) had to be XRF-tested at 0.5 mg/cm² by August 9, 2025, by an EPA-certified inspector independent of the owner and of any remediation firm. Missing it can bring Class C violations with $1,500 penalties per unit.
  • New Jersey’s rental lead law: pre-1978 rental units must be inspected every three years or at tenant turnover, whichever comes first. Depending on the town, the inspection is visual or uses dust wipes, and a passing unit gets a lead-safe certificate valid for two years.
  • HPD and health department orders: testing that defines exactly what needs to be corrected.

What it costs

Pricing depends on the number of units and rooms, whether dust wipes are needed, and access. Portfolio and multi-unit pricing is available.

Free in-person estimates

Many jobs can be quoted from photos and a report. When a job needs to be seen, we come out and estimate it for free, anywhere in New York or New Jersey.

Every size of job

We handle the smallest jobs and the biggest, with the same care.

Small jobsA pipe elbow, one bathroom floor, a single test. No job is too small.
Apartments & homesKitchens, gut renovations, basements, whole houses.
Buildings & roofsFull roofs, siding, boiler rooms, multi-floor commercial and phased work.

How it works

  1. Tell us the address and units

    How many units, the year built, and why you’re testing.

  2. Scheduling

    We schedule around tenants and access, building by building for portfolios.

  3. XRF and dust wipes

    Every painted component tested, plus dust wipes where required.

  4. Reports

    Organized reports, and a remediation quote if anything is positive.

Frequently asked questions

What is XRF testing?

An X-ray fluorescence analyzer measures lead in paint through all its layers, without scraping. It gives a reading for each surface: doors, frames, windows, walls, baseboards.

Do co-op and condo units need Local Law 31 testing?

Owner-occupied units are exempt while the owner lives there. Rented units, including sublets, must be tested.

I missed the August 2025 deadline. What now?

Test now, keep the reports, and address positive components. The sooner you comply, the less exposure you have to violations.

Can the same company test and remove lead?

NYC requires the XRF inspector to be independent of the remediation firm, so we keep those roles separate and your reports hold up.

How do I get a New Jersey lead-safe certificate?

The unit is inspected (visually or with dust wipes, depending on your town). If it passes, the certificate is issued and valid for two years. If not, the hazards are fixed and the unit is re-inspected.

How long does an XRF inspection take?

A typical apartment takes about an hour or two. Buildings are scheduled unit by unit.

Do you do dust wipes?

Yes: for clearance after work, NJ lead-safe inspections, and DOH or HPD requirements.

We serve New York and New Jersey

A New Jersey home

New Jersey

Every county, from North Jersey (Bergen, Hudson, Essex) to Central Jersey (Monmouth, Ocean) and South Jersey.

(908) 271-8485

Tell us what you’re dealing with.

One call or a quick online request gets you a clear quote, or a free in-person estimate when the job needs one. We serve New York and New Jersey alike.

Call NY(347) 394-4411Call NJ(908) 271-8485Get a quotetakes a minute