Many NYC landlords completed XRF lead paint testing in their apartment units before the Local Law 31 deadline (August 2025) — but forgot about the common areas. Under Local Law 31 of 2020 (which amended Local Law 1 of 2004), the testing mandate doesn't stop at apartment doors. Hallways, stairwells, lobbies, basements, and every other shared space with painted surfaces must also be tested using XRF technology.
If you own a multiple dwelling built before 1960 and haven't tested your common areas, you're already out of compliance. HPD can issue Class C immediately hazardous violations with civil penalties up to $1,500 per violation — and that's on top of any violations for untested apartments.
This guide covers exactly which common areas require testing, the legal framework behind the requirement, what happens during a common area inspection, and the steps you need to take right now to get compliant.
Important: The Deadline Has Passed
The August 9, 2025 deadline for completing XRF testing of all dwelling units and common areas has already passed. If your building's common areas haven't been tested, schedule an inspection immediately to minimize penalties and demonstrate good faith compliance.
Why Common Areas Matter Under Local Law 31
Before Local Law 31, lead paint regulations in NYC primarily focused on dwelling units — specifically apartments where children under six resided. Common areas were often an afterthought. That changed dramatically when the NYC Council passed Local Law 31 of 2020.
The law recognized a critical gap: children don't just live in apartments — they walk through hallways, touch stairwell banisters, play in lobbies, and ride in elevators. Lead dust from deteriorating paint in these shared spaces poses the same poisoning risk as paint inside an apartment.
Under the updated law, property owners must:
- Test all painted surfaces in common areas using XRF (X-Ray Fluorescence) technology
- Hire an EPA-certified lead inspector or risk assessor who is independent of any remediation contractor
- Maintain testing records for at least 10 years and provide them to HPD upon request
- Remediate any lead-based paint hazards found during testing — especially peeling or deteriorating paint
Which Common Areas Require XRF Testing?
The short answer: every shared space with painted surfaces. HPD's interpretation of "common areas" is broad and covers all spaces that building occupants or visitors may access. Here's the complete breakdown:
Hallways & Corridors
All walls, ceilings, door frames, and trim in every hallway on every floor of the building. This includes service corridors and back hallways.
Stairwells
Walls, ceilings, banisters, handrails, stringers, and risers in all stairwells — from basement to roof access. Includes fire stairs.
Lobbies & Vestibules
Main entrance lobby, vestibule areas, mailroom areas, and any other ground-floor common spaces with painted surfaces.
Basements & Cellars
Basement hallways, storage cage areas, boiler rooms (accessible painted surfaces), laundry room walls and ceilings.
Elevator Cabs & Shafts
Interior walls and ceilings of elevator cabs, elevator lobby areas on each floor, and accessible surfaces of elevator shaft doors.
Laundry & Utility Rooms
Shared laundry rooms, trash compactor rooms, utility closets, and mechanical rooms with painted surfaces accessible to occupants.
Community & Recreation Spaces
Common rooms, recreation areas, roof decks with enclosed structures, playrooms, and any shared amenity spaces.
Storage Areas
Shared storage rooms, bicycle storage areas, package rooms, and any other painted storage spaces accessible to tenants.
What About Exterior Common Areas?
Local Law 31's XRF testing requirement applies to interior painted surfaces. However, exterior common areas (courtyards, painted fences, exterior stairways) may still fall under federal EPA regulations if renovation or repair work is planned. The EPA's RRP (Renovation, Repair, and Painting) rule requires lead-safe work practices for any project disturbing lead-based paint in pre-1978 housing.
The Legal Framework: Laws That Govern Common Area Testing
NYC's common area lead paint testing requirements come from several overlapping laws. Understanding them helps you know exactly what's required and why:
Local Law 1 of 2004 (The Foundation)
This was NYC's original comprehensive lead paint law. It required property owners to presume lead-based paint exists in all pre-1960 buildings and to monitor and repair peeling paint in apartments where children under six reside. It also required safe work practices in common areas when disturbing paint, but didn't mandate proactive testing of common areas.
Local Law 31 of 2020 (The Testing Mandate)
This is the game-changer. Local Law 31 amended Local Law 1 to require that all painted surfaces in all dwelling units and common areas of pre-1960 multiple dwellings be tested using XRF technology. The deadline: August 9, 2025. It also established HPD's authority to conduct audits and verify testing compliance.
Local Law 66 of 2019 (The Stricter Standard)
This law lowered the definition of "lead-based paint" from the federal standard of 1.0 mg/cm² to 0.5 mg/cm². This means more surfaces in your common areas may test positive for lead than would have under the old standard — making testing even more critical.
Key Distinction: Testing vs. Remediation
Testing is always required — even if no children live in your building. Remediation requirements depend on the results: if lead-based paint is found in good condition (not peeling or deteriorating), you must monitor it. If it's peeling or deteriorating, especially in buildings where children under six reside, immediate remediation is required using EPA-certified contractors and safe work practices under Local Law 1.
What Happens During a Common Area XRF Inspection?
Understanding the inspection process helps you prepare your building and avoid delays. Here's what to expect when an EPA-certified inspector comes to test your common areas:
1. Pre-Inspection Walkthrough
The inspector will first walk through all common areas of your building to identify every painted or coated surface that needs testing. This includes walls, ceilings, doors, door frames, window frames, trim, banisters, railings, columns, and any other architectural elements with paint.
2. XRF Testing of Every Surface
Using a handheld XRF (X-Ray Fluorescence) analyzer, the inspector places the device directly against each painted surface. The XRF emits X-rays that cause atoms in the paint to fluoresce, revealing the exact lead content measured in milligrams per square centimeter (mg/cm²). Results are instant — there's no waiting for lab results.
Under NYC's stricter standard (Local Law 66 of 2019), paint is classified as lead-based at 0.5 mg/cm² or greater. Each surface component in each room or area is tested individually.
3. Detailed Report
After testing, the inspector provides a comprehensive report that includes:
- XRF readings for every tested surface in every common area
- A clear designation of which surfaces tested positive (≥ 0.5 mg/cm²) or negative (< 0.5 mg/cm²) for lead
- The condition of each surface (intact, fair, poor, peeling)
- A floor-by-floor breakdown of results
- Recommendations for any surfaces requiring remediation
4. Record Retention
You are legally required to keep these records for at least 10 years and must provide them to HPD upon request. This is not optional — failure to produce records during an HPD audit is itself a violation.
Common Area Testing vs. Apartment Testing: Key Differences
While the XRF technology is the same, there are practical differences between testing common areas and individual apartments:
| Factor | Apartment Testing | Common Area Testing |
|---|---|---|
| Access | Requires tenant coordination and scheduling | Owner controls access — can schedule freely |
| Scope | Every room in every unit | Every floor, hallway, stairwell, and shared space |
| Typical Lead Found | Window sills, doors, trim, radiator covers | Stairwell walls, hallway trim, banister paint, basement walls |
| Remediation Trigger | Peeling paint + child under 6 in unit | Peeling paint in any common area (if child under 6 in building) |
| Advantage | — | No tenant scheduling needed — faster to complete |
Pro Tip
Since common areas don't require tenant access, there's no reason to delay. Many landlords schedule common area testing first while coordinating apartment access with tenants — knocking out the easier part immediately.
Penalties for Not Testing Common Areas
HPD takes common area compliance seriously. Here's what you face if your common areas haven't been tested:
| Violation | Classification | Penalty |
|---|---|---|
| Failure to complete XRF testing | Class C (Immediately Hazardous) | Up to $1,500 per violation |
| Failure to maintain testing records | Class C | Up to $1,500 per violation |
| Peeling lead paint not remediated | Class C | Up to $1,500+ per violation |
| Failure to use safe work practices during repairs | Class C | Up to $1,500 per violation |
| Failure to provide records to HPD on request | Class B or C | Up to $1,000–$1,500 |
Important: Violations can be issued per common area, per floor. A six-story building with untested hallways, stairwells, and a basement could face multiple violations simultaneously. These are Class C violations — meaning HPD considers them immediately hazardous — and they require correction within 24 hours of notice.
HPD Audits: What to Expect
Under Local Law 31, HPD has the authority to audit buildings for lead paint testing compliance. During an audit, HPD may:
- Request your XRF testing records for all dwelling units and common areas
- Send an inspector to verify that testing was completed and that records match actual conditions
- Issue violations for any gaps in testing, missing records, or unaddressed lead-based paint hazards
- Conduct their own XRF testing if they suspect testing wasn't done properly
HPD has been ramping up audits since the Local Law 31 deadline (August 2025) passed. Buildings that haven't filed for an exemption (indicating all surfaces tested negative) or submitted compliance documentation are being prioritized for enforcement.
The Exemption: What Happens When Common Areas Test Negative
If all painted surfaces in your common areas test below 0.5 mg/cm² (negative for lead-based paint), you can file for an exemption with HPD. This exemption means:
- The annual inspection requirements under Local Law 1 no longer apply to those areas
- You're no longer required to presume lead-based paint exists in those spaces
- You still must keep the XRF records for 10 years as proof
However, the exemption only applies to areas that tested negative. If some common area surfaces test positive and others negative, the exemption applies only to the negative areas. Positive areas must be monitored and maintained according to Local Law 1 requirements.
Timeline: Key Dates Every Landlord Should Know
Steps to Get Your Common Areas Compliant Right Now
Common Area Compliance Checklist
- Hire an EPA-certified lead inspector or risk assessor — Verify their certification at epa.gov. They must be independent of any remediation contractor you plan to use.
- Ensure access to all common areas — Unlock basement, utility rooms, storage areas, roof access, and any other spaces that need testing.
- Complete XRF testing of every painted surface — The inspector will test walls, ceilings, doors, trim, banisters, window frames, and all other painted components in every common area.
- Review the inspection report carefully — Understand which surfaces tested positive (≥ 0.5 mg/cm²) and which tested negative.
- Address any lead-based paint hazards immediately — If peeling or deteriorating lead paint is found, hire an EPA-certified remediation firm to address it using safe work practices required by Local Law 1.
- File for an exemption (if applicable) — If all surfaces tested negative, file for an exemption with HPD to remove the lead-based paint presumption for those areas.
- Store records securely for 10 years — Keep both digital and physical copies of all XRF reports, remediation records, and contractor certifications.
- Monitor positive surfaces ongoing — If lead-based paint was found in good condition, add those areas to your regular maintenance inspection schedule.
Frequently Asked Questions
Do I need to test common areas if no children live in my building?
Yes. The XRF testing requirement under Local Law 31 applies to all pre-1960 multiple dwellings regardless of occupant age. The testing deadline applied universally. The presence of children affects remediation urgency — not whether testing is required.
Can I test common areas and apartments at the same time?
Absolutely, and we recommend it. Most inspectors test common areas and apartments during the same visit to save time and reduce costs. Since common areas don't require tenant scheduling, your inspector can start there while waiting for tenant access to individual units.
What if I already painted over old paint in common areas?
Painting over lead-based paint doesn't remove the requirement to test. XRF technology detects lead through multiple layers of paint — even if the surface looks freshly painted. In fact, encapsulating lead paint with new paint can be a valid maintenance strategy, but only after testing confirms the lead is present and the encapsulation is properly documented.
How much does common area XRF testing cost?
Costs vary based on building size, number of floors, and total common area square footage. For a typical NYC walkup, common area testing can range from a few hundred to over a thousand dollars. When bundled with apartment unit testing, the per-area cost is typically lower. Contact us for a free quote specific to your building.
What's the difference between an inspection and a risk assessment?
A lead inspection identifies the presence or absence of lead-based paint on every surface. A risk assessment goes further by evaluating the condition of lead-based paint, identifying lead hazards (like lead dust on floors), and recommending specific remediation actions. For common area compliance under Local Law 31, an inspection using XRF is what's required.
Do co-ops and condos need to test common areas?
Yes. If the building was constructed before 1960 and contains any rental units (including units where the owner is not the occupant), the common areas must be tested. Co-op and condo boards should coordinate with their management companies to ensure compliance. Even in buildings where most units are owner-occupied, if any unit has a tenant, common area testing is required.
Need Common Area XRF Testing?
Our EPA-certified inspectors can test all common areas in your building quickly and provide the documentation you need for HPD compliance.
Get a Free QuoteThe Bottom Line
Common area XRF testing isn't optional — it's been a legal requirement since Local Law 31 passed in 2020, and the testing deadline has already passed. Every hallway, stairwell, lobby, basement, and shared space in your pre-1960 building needs to be tested.
The good news? Common areas are actually the easiest part of lead paint compliance. You don't need to coordinate with tenants, you control the access, and an experienced inspector can test most buildings' common areas in a single visit.
Don't wait for HPD to audit your building. The longer you delay, the greater the risk of violations and penalties. Schedule your common area XRF testing today and get one step closer to full compliance.