The Short Answer
- 01Typical NYC ranges in 2026: $12,000–$25,000 for a one- or two-family home, $25,000–$60,000 for a 3–6 unit building, and $60,000–$250,000+ for larger multifamily, based on our jobs. Your quote comes after a site visit.
- 02The big costs are the new boiler or burner, the utility gas service, gas piping inside the building, a chimney liner, and closing out the oil tank.
- 03New in 2026: New York ended the "100-foot rule," so new gas customers now pay for, or agree in writing to pay for, the utility's service and main extension.
- 04No. 4 heating oil is banned in NYC boilers from July 1, 2027, which is pushing many apartment buildings to convert now.
- 05Con Edison doesn't offer incentives for oil-to-gas conversions; current incentives go to heat pumps and electrification.
In This Guide
01
What You're Paying For
Every conversion has the same parts. What changes the price from one building to the next is how much of each your building needs.
- Gas boiler or burner
- What it coversA new gas boiler, or a gas burner on an existing boiler that's in good shape
- What drives the priceBuilding size and heat load, steam or hot water, efficiency, and whether the old boiler can stay
- Utility gas service
- What it coversThe utility's service line and meter, and a main extension if the street isn't served
- What drives the priceDistance to the gas main, street work, and meter location
- Gas piping inside
- What it coversPiping from the meter to the boiler and any other gas appliances
- What drives the priceRun length, pipe size, and the route through the building
- Chimney liner
- What it coversInspecting, cleaning, and usually relining a chimney that served an oil burner
- What drives the priceChimney height and condition
- Oil tank closure
- What it coversRemoving the tank, or cleaning and abandoning it in place under FDNY rules
- What drives the priceTank size, location, and whether it's buried
- Permits and filings
- What it coversDOB filings by the master plumber and the utility's application and inspections
- What drives the priceScope of work and building type
- One- or two-family home, all in
- Typical NYC range$12,000–$25,000
- 3–6 unit building, all in
- Typical NYC range$25,000–$60,000
- 7–50 unit building, all in
- Typical NYC range$60,000–$250,000+
- Chimney liner (home)
- Typical NYC range$2,000–$6,000
- Oil tank removal, basement
- Typical NYC range$1,500–$4,000
- Buried oil tank abandonment
- Typical NYC range$2,500–$6,000
- Utility gas hookup
- Typical NYC rangeSet by Con Edison or National Grid; ask for a written estimate
02
The 2026 Change to Gas Hookup Costs
For years, New York's "100-foot rule" required utilities to install up to 100 feet of gas main and service for a new residential customer at no direct cost, spreading the expense across all ratepayers. A state law signed on December 19, 2025 (Chapter 709 of 2025) ended it: new applicants now pay, or agree in writing to pay, the material and installation costs.
News reports said utilities would phase the change in over about a year, so how it applies depends on when your application is filed. Ask Con Edison or National Grid for a written hookup estimate early; it's now one of the biggest unknowns in a conversion budget.
03
Chimney and Oil Tank
Chimney. The NYC Fuel Gas Code requires a chimney that served an oil appliance to be inspected and cleaned before it's used for gas, and chimneys must be lined to NFPA 211. Because a fuel change usually means a different appliance, plan on a liner unless the chimney is already lined for gas.
Oil tank. The old tank has to be taken out of service under FDNY rules, either removed or cleaned and sealed in place, with the paperwork filed. Buried tanks cost more than basement tanks.
04
NYC Heating Oil Deadlines
- No. 6 oil ban
- What it requiresNo burning residual (No. 6) oil
- WhenIn effect
- No. 4 oil ban, Local Law 32 of 2023
- What it requiresNo burning No. 4 oil in boilers; permits to burn it haven't been issued or renewed since June 30, 2024
- WhenJuly 1, 2027
- Bioheat blend
- What it requiresHeating oil must contain biodiesel: B10 now, rising under state law
- WhenB20 statewide from July 1, 2030
Buildings still on No. 4 oil have to switch fuels or equipment before July 2027. Since utility work and equipment lead times aren't guaranteed, starting the gas application at least a heating season ahead is the safe plan.
Large buildings should also weigh Local Law 97 emissions limits, which favor electrification over the long run. Local Law 154 of 2021, the all-electric rule, applies to new buildings, not to converting an existing boiler.
05
How a Conversion Runs
- 1
Site Visit and Quote
We check the heat load, the boiler, the chimney, the tank, and where gas can enter the building.
- 2
Utility Application
The gas service application goes to Con Edison or National Grid, which sets the hookup cost and schedule.
- 3
DOB Filings
The master plumber files the gas piping and boiler work with DOB.
- 4
Installation
Gas piping, the boiler or burner, the chimney liner, and the oil tank closure.
- 5
Test, Inspect, and Turn On
The piping is pressure tested and inspected, DOB issues the gas authorization, and the utility sets the meter and turns on gas.
The utility service is usually the part that sets the timeline, and utilities don't publish a standard install time. Use our savings calculator on the oil-to-gas page to estimate your yearly fuel savings, and see financing if you'd rather spread the cost out.
06
Common Questions
How much does it cost to convert from oil to gas in NYC?
Typical 2026 ranges on our jobs are $12,000–$25,000 for a one- or two-family home, $25,000–$60,000 for a 3–6 unit building, and $60,000–$250,000+ for larger multifamily, before any utility hookup charge. Your exact price comes after a site visit.
Does Con Edison pay for the gas line to my house?
Not anymore by default. New York ended the 100-foot rule in December 2025, so new gas customers pay, or agree to pay, the cost of the service and any main extension. Ask the utility for a written estimate before you commit.
When is No. 4 heating oil banned in NYC?
July 1, 2027, under Local Law 32 of 2023. It replaced the original 2030 deadline. No. 6 oil is already banned.
Do I need a chimney liner when converting to gas?
Usually. The NYC Fuel Gas Code requires a chimney that served an oil appliance to be inspected and cleaned, and chimneys must be lined to NFPA 211. Unless it's already lined for gas, plan on a liner.
Are there rebates for converting oil to gas?
Con Edison doesn't offer incentives for oil-to-gas conversions. Current utility and state incentives focus on heat pumps and other electrification.
What happens to my old oil tank?
It has to be taken out of service under FDNY rules, either removed or cleaned and sealed in place, with the closure documented.
Sources
- NYC Local Law 32 of 2023 (No. 4 heating oil phase-out)
- NY State Senate Bill S8417 (Chapter 709 of 2025, ends the 100-foot rule)
- NY State Senate Bill S3321 (statewide Bioheat blend requirements)
- NYC Local Law 154 of 2021 (all-electric new buildings)
- 2022 NYC Fuel Gas Code, Chapter 5 (chimneys and vents)
- Con Edison: How to Get Your Gas Back
This guide explains NYC rules in plain terms. It isn't legal advice, and rules and utility procedures change; check the sources above or call us about your building.