Most window cleaning contracts get reviewed in five minutes — too quickly to catch the things that actually cost a building money. A scope that’s vague enough to let the vendor skip half the glass. A schedule that doesn’t account for shoulder seasons. A COI tier too low to cover an actual incident. Missing safety credentials that show up only after a fall.

Here’s a real checklist for what NJ and NYC property managers should require in any window cleaning contract — written from a window cleaning company that works across hundreds of properties in Bergen, Hudson, Westchester, and Manhattan and has seen what “standard” contracts get wrong.

1. Scope — Specific, Not “Window Cleaning”

The single most expensive mistake on a generic contract is a fuzzy scope. “Window cleaning” can mean three different things:

• Exterior face glass only
• Exterior + interior face glass
• Full perimeter cleaning — frames, mullions, sills, tracks, door glass, vestibule glass, common-area glass partitions, and any glass railings

Spell out which one. Also spell out exclusions: skylights (often separate), interior glass partitions, glass railings on balconies, exterior glass behind permanent fixtures. If you’ve got a mixed-use building with a storefront tenant, our storefront window cleaning schedules post covers the retail side of the scope.

2. Frequency, by Surface Type

Most contracts list “quarterly” or “semi-annual” once and stop. Better contracts break it down by surface type:

• Exterior office tower face glass: Quarterly
• Storefront ground-floor glass: Monthly minimum
• Lobby and entry vestibule glass: Weekly to bi-weekly
• Interior common-area glass partitions: Monthly to quarterly depending on traffic
• Door glass and door handles: Weekly touch-up
• Glass railings on balconies or terraces: Quarterly to semi-annual

Bundling all of these into a single “quarterly visit” line item gives the vendor too much room to interpret. A real contract calls each one out.

3. Insurance — At The Right Tier

Standard commercial COIs don’t cut it for buildings over six floors or anything classified as high-rise. At minimum, require:

• General liability $2M per occurrence / $4M aggregate at minimum — most NYC and large NJ commercial buildings require this
• Workers’ compensation — non-negotiable
• Umbrella or excess coverage $5M+ for high-rise or anything above the ground floor
• Auto liability if vehicles enter the property
• The building or management company named as additional insured
• Waiver of subrogation — usually a separate request

If a vendor pushes back on any of these, that’s information. The reputable vendors carry this coverage as a normal cost of doing the work. Our blogs on the medical facility insurance requirements and NYC Local Law 11 facade work cover the verticals where these requirements get even stricter.

4. Safety Credentials

For any work above the first floor, your contract should require documented safety credentials:

• OSHA 10 / OSHA 30 certification for all crew members — the OSHA Outreach Training Program covers the standard
• IRATA or SPRAT rope-access certification for any rope-descent work
• Suspended scaffolding training if applicable
• Fall protection plan reviewed annually
• Site-specific safety orientation before work begins on a new building

For NYC high-rises, the New York City Department of Buildings sometimes layers additional FISP and facade requirements on top of OSHA — a vendor working on a Class A NYC tower needs more than baseline credentials.

5. Schedule Flexibility for Shoulder Seasons

Most properties need different cleaning intensity in different seasons. Build it into the contract:

• Spring pollen wave: One extra visit in May for any property with mature trees nearby
• Winter salt residue: Cleaner touch-ups on entry glass through January and February
• Holiday retail surge: Mixed-use buildings with retail tenants need more frequent storefront cleaning Oct–Dec
• Post-storm response: A clause that covers emergency cleaning after major storms

A contract with built-in flexibility costs slightly more per year but saves dramatically on emergency calls.

6. Quality Standards and Recourse

What does “completed satisfactorily” mean? Most contracts leave this blank. Better contracts include:

• Photo documentation of completed work, especially for high-rise floors that management can’t easily inspect
• Re-do clause within 48–72 hours for missed spots or streaks identified on inspection
• Damage reporting — vendor’s obligation to report any glass damage, frame damage, or scratches discovered during cleaning
• Annual quality review — building walk-through with the vendor’s account manager

7. Scheduling and Access Logistics

For multi-tenant buildings especially:

• Advance notice requirements — most buildings need 7–14 days for tenant notification
• Access window restrictions — many medical and Class A buildings restrict cleaning to specific hours
• Tenant communication — who handles tenant notifications, the vendor or the property manager
• Holiday and event exclusions — calendar blackouts the vendor needs to honor
• Weather contingency — what happens when scheduled cleaning days hit rain, wind, or storms

8. Pricing Structure

Look closely at how pricing is structured:

• Fixed annual contracts are easier to budget but harder to flex
• Per-visit pricing gives you more control but less predictability
• Tiered pricing for different surface types is the cleanest middle ground
• Annual escalators — what’s the price increase cap year-over-year
• Emergency-call pricing — known rates for storm response, special events, or off-schedule visits
• Equipment surcharges — should be itemized, not buried

9. Termination and Renewal Terms

• Length: 1-year contracts are easier to exit; 3-year contracts often lock in better pricing
• Notice period: 60–90 days standard for non-renewal
• Performance termination clause: right to terminate for cause after documented quality failures
• Automatic renewal language: read carefully — some contracts auto-renew for full multi-year terms unless cancelled in a specific window

10. Documentation and Reporting

The simplest line item that separates real vendors from cheap ones:

• Service reports after each visit — date, crew, work completed, anything flagged
• Annual summary — services delivered vs contracted, any service credits, recommendations for the next year
• COI renewals delivered automatically, not requested every renewal cycle
• Issue log — for any property complaints, damages, or scheduling conflicts

The Bottom-Line Test for a Contract

Read the proposal as if you were trying to find ways to under-deliver. If the language gives the vendor room to skip glass, omit frames, miss seasonal needs, or escape responsibility for damages — fix the language before signing.

A real vendor will work with you to tighten these terms, not push back on them. If a vendor resists adding specificity, that’s information about how the contract will actually be performed.

Ready to Compare Vendors on the Real Terms?

If you’re reviewing window cleaning bids or renewing a current contract across NJ or NY metro, we’d be happy to walk through your building, review what you have, and submit a proposal with all of these items spelled out — covering everything from standard commercial window washing to high-rise NYC and NJ work. Request a free commercial window cleaning estimate and we’ll send a proposal that holds up to a real contract review.