NYC Building Compliance Calendar 2027

For buildings over 25,000 square feet, the May 1, 2027 LL84 benchmarking and LL97 carbon reporting deadlines are four months away. January is the time to pull 2026 utility data from Con Edison and National Grid, verify Portfolio Manager account access, and confirm that any sub-meter readings are reconciled. Learn about our LL84/LL97 services →

Buildings with boiler inspection anniversaries in winter months should ensure inspections are filed through DOB NOW: Safety on time. Late filings stack penalties quickly.

Buildings six stories or taller assigned to FISP Sub-Period A have less than two months to complete their critical examination, prepare the Technical Facade Inspection Report (TR6), and file through DOB NOW: Safety. Late filings carry significant fines.

DEP requires annual backflow prevention assembly testing for cross-connection control. Buildings on a January anniversary cycle should schedule their annual test. DEP backflow testing services →

This is the largest single deadline for the FISP program in 2027. Buildings assigned to Sub-Period A must have filed their Cycle 10 report by this date. Buildings assigned to Sub-Period B can begin their two-year filing window. Check your building's BIN against the DOB FISP sub-period schedule to confirm which sub-period applies.

Sub-Period B runs from Feb 21, 2027 through Feb 20, 2029. Buildings assigned to Sub-Period B have a two-year window to complete and file. We recommend scheduling the QEWI inspection in the first six months of the sub-period so that any Safe With a Repair and Maintenance Program (SWARMP) or Unsafe findings have time to be remediated before the next filing.

Building owners over 25,000 square feet should be running 2026 emissions calculations against the LL97 limits. If the building is projecting over the limit, this is when remediation conversations need to start, because there are not many cost-effective levers left between February and the May 1 deadline.

Elevators on a five-year Category 5 inspection cycle reaching anniversary in February should be scheduled. Category 5 requires an inspection agency separate from the elevator maintenance contractor. Independent elevator inspection services →

The May 1 deadline is two months away. By the end of March, all 2026 utility and water data should be entered into the building's EPA Portfolio Manager account, with discrepancies between utility bills and Portfolio Manager output reconciled.

For buildings over 25,000 square feet, the annual emissions report must show 2026 emissions calculated using the LL97 methodology, with documentation of any beneficial electrification, on-site renewables, or eligible credits. March is the right time to have the draft report substantially complete.

Buildings that missed the Feb 21 Sub-Period A deadline now begin accruing late filing penalties. The initial fine is $250, plus $1,000 per month thereafter until filing is complete.

2027 is the LL152 inspection year for buildings in Community Districts 1 and 3 across all five boroughs. The actual filing deadline depends on the building's anniversary, but Master Plumber scheduling for the year typically tightens through spring and summer. Earlier is better. LL152 gas line testing →

Buildings in LL84 scope should have a final Portfolio Manager report ready to submit. April is when our team typically does the final QA pass: verifying Energy Use Intensity (EUI) is calculated correctly, that the building's gross square footage matches DOB records, and that any sub-tenant readings are correctly attributed.

The annual emissions report for 2026 must be filed by May 1, 2027. April should include a final review of the calculation methodology and any election of beneficial electrification credits, renewable energy credits, or other allowable offsets.

Buildings over 50,000 square feet with a BIN ending in 7 are scheduled for an LL87 Energy Efficiency Report in 2027. This includes both an Energy Audit (EA) and a Retro-commissioning Report (RCx), filed together as the EER. Lead time for full LL87 work is typically six to nine months, so early-year scheduling is essential.

For buildings switching boilers from heating to off-season, this is a natural time for annual BR-8 inspection scheduling. Many of our boiler clients consolidate annual inspection and minor service work during the off-season window between Apr 15 and Oct 1.

All buildings over 25,000 square feet must submit their 2026 energy and water benchmarking data through NYC's portal by 11:59 PM on May 1. Late submissions trigger $500 per quarter penalties, capped at a maximum per year.

Buildings over 25,000 square feet must file their 2026 annual emissions report by May 1. Buildings emitting above their LL97 limit owe $268 per metric ton of CO2 equivalent over the limit. Non-filing carries an additional $500 per day penalty.

This is the most consequential single deadline in the entire NYC compliance calendar for large buildings. If you have not had the LL97 conversation with your operations team yet, May 1, 2027 is when the bill comes due.

Many NYC buildings schedule annual boiler inspections in May after the heating season ends. BR-8 inspections and BR-2 Boiler Operating Permit renewals are most efficient when done together. Boiler inspection services →

Buildings assigned to Sub-Period B (Feb 21, 2027 to Feb 20, 2029) typically use late spring and early summer for QEWI critical examinations. Scaffolding and access permits are easier to obtain in good weather, and any SWARMP findings can be remediated before next winter.

For buildings that filed an emissions report showing they exceeded their LL97 limit, DOB begins assessing the $268-per-metric-ton penalty. Owners who anticipate a 2027 over-limit position should be talking to their decarbonization team now about 2028 corrective measures.

Mid-summer is one of the busiest stretches for facade inspections. QEWI engineers performing close-up critical examinations on buildings throughout the city. Scheduling beyond July becomes difficult as the calendar fills.

Category 1 elevator inspections are due annually based on the elevator's anniversary date. Summer is typically a heavy scheduling period because building owners want inspections completed before heating season pressure-tests the system.

Master Plumbers performing LL152 gas piping inspections are at peak utilization in summer. Buildings in the 2027 community district group should have their inspection scheduled by the end of June.

Boiler annual inspections proceed on a rolling anniversary basis. Buildings with summer-cycle boilers should ensure inspections are scheduled and filed in time.

For buildings with BIN ending in 7 over 50,000 square feet, the LL87 Energy Audit and Retro-commissioning Report field work typically runs through summer. The full EER package must be filed by Dec 31, 2027 to avoid penalty.

Late summer is when many FISP critical examinations get completed. Owners who began scheduling in spring should have the inspection done by end of July with a draft report in hand.

Once the Master Plumber completes the gas piping inspection, the GPS1 (Gas Piping System) form is filed through DOB. July is when many 2027-cycle filings begin appearing in DOB records for CD 1 and CD 3 buildings.

Late summer storm season is when facade issues become urgent. Any Unsafe findings from FISP Sub-Period B inspections done earlier in the year should be remediated before September storms. Loose masonry, deteriorated parapets, and damaged window lintels are common pre-storm safety concerns.

Many NYC buildings have backflow anniversaries in late summer to early fall. The annual DEP testing must be completed by a certified BAT tester and filed within 30 days of the test.

Before the heating season starts in October, many owners schedule the annual BR-8 inspection in August or September. This catches any pressure relief valve, low-water-cutoff, or burner issues before the boiler is needed for daily occupancy.

September is the peak month for boiler inspection scheduling. Heating season starts October 1 for residential buildings, and an unfiled BR-8 right before heating season is one of the costliest oversights an owner can make.

Buildings that completed Sub-Period B critical examinations in spring or early summer typically have their TR6 report drafted and filed by September. This leaves time to address any SWARMP or Unsafe findings before they become urgent.

Many elevator anniversaries land in September. Category 1 inspections must be filed within 30 days of the inspection, and any reported issues must be remediated within the time frame specified.

By end of Q3, the majority of 2027-cycle community district gas inspections should be filed. Late inspections risk significant penalties under the LL152 program.

October 1 marks the start of residential heating season. Boiler Operating Permits (BR-2) renewing in fall should be filed in advance. Operating a boiler with a lapsed Operating Permit is a separate violation from a missed inspection.

The full two-year Sub-Period B window allows owners flexibility, but DOB typically sees a filing peak in Q4 as owners wrap up the year's compliance work.

For BIN-ending-7 buildings, the LL87 Energy Audit and Retro-commissioning Report should be substantially complete by October. The full EER filing is due Dec 31, 2027, and owners need time to review findings before filing.

November is one of the busiest FISP filing months. Owners on Sub-Period B who completed inspections during the summer file the TR6 report through DOB NOW: Safety, with QEWI engineer sign-off and any required photo documentation.

For BIN-ending-7 buildings, November is the last reasonable month for the EER to be in final form before the Dec 31 deadline. Owners should be reviewing the Energy Audit findings and Retro-commissioning recommendations with their facility teams.

November is the right time to audit your building's DOB BIS record for any open boiler-related violations or unfiled BR-2 renewals. Year-end cleanup is easier than year-start cleanup.

For buildings over 50,000 square feet with BIN ending in 7, the LL87 EER must be filed through DOB by Dec 31. Late filings carry $3,000 first-year and $5,000 subsequent-year penalties.

December is when sophisticated owners build the next year's compliance calendar. 2028 includes the second full year of LL97 reporting, LL152 inspections for Community Districts 4, 8, and 9, LL87 EER for BIN-ending-8 buildings, and continued FISP Sub-Period B work.

All Community District 1 and 3 buildings should have a filed LL152 inspection on record by year-end. Late inspections carry $5,000 penalties plus filing fee escalations.