Chimney repair & relining costs in Philadelphia (2026)

No official price list exists for chimney work, and we haven’t found a published survey of Philadelphia prices, so this guide uses national ranges and shows where each number comes from. What it adds is the Philadelphia part: the L&I fees that can appear on a quote, the next-door-construction rule that can shift the cost to a builder, and the rowhouse details that move labor up or down. A contractor has to inspect the flue before anyone can quote.

Published price ranges

Relining, line by line

Relining is the biggest chimney bill most Philadelphia owners see, usually after a failed inspection or a new furnace or water heater. HomeGuide breaks a typical stainless steel reline into these parts:

HomeGuide says a liner installation takes 4 to 8 hours on average, longer for several flues or when the chimney needs repairs first. It also notes that aluminum liners are only for gas appliances, and that solid-fuel (wood) chimneys need an insulated liner under fire codes.

Philadelphia permit fees that can show up on a quote

L&I says a Mechanical Permit is needed to install devices covered by the Philadelphia Mechanical and Fuel Gas Codes, and that a licensed contractor must do the work. Not every chimney repair needs a permit; replacing or connecting a heating appliance often does. For one- and two-family homes, L&I’s fee summary lists:

Ask whether permit fees are in the quote or billed separately. In a historic district, Historical Commission review of roofing, flashing, vents and masonry is free. Full rules page.

What common Philadelphia situations tend to cost

These add up the published ranges above for situations we hear about most. They are not quotes; your house, roof and chimney decide the real number.

You’re replacing a gas furnace, boiler or water heater

Many Philadelphia rowhouses vent the basement heater or water heater through an old brick chimney. When the appliance changes, CSIA says to get a Level II inspection ($250–$600, HomeGuide). If the flue needs a liner, a stainless steel liner runs $900–$3,800 installed, plus L&I fees of $69 per appliance connected to the chimney when it’s permitted separately. The plumber or HVAC contractor installing the appliance and the chimney contractor need to agree on the liner size.

Water is coming in around the chimney

Leaks at the stack usually come from flashing, the crown, a missing cap or open mortar joints. Published ranges: flashing repair $300–$1,800, a cap $200–$850, crown repair $200–$700 (full replacement up to $3,000), and repointing a chimney $700–$3,000. Ask for photos of the problem before work and of the finished repair, especially on a three-story roof you can’t easily see.

A builder next door is going higher than your roof

If new construction rises above your roof and your chimney or vent is within 10 feet, L&I Regulation B-3307.1.1 says the builder must send a notice at least 60 days before work, offering to get permits and to fund or perform the extension. Accepting the offer can mean the extension costs you nothing. Two exceptions matter for your budget: if you ignore or reject the offer, compliance becomes your responsibility, and defects that already existed in your chimney are yours to fix first. Step-by-step guide.

The chimney isn’t used any more

If nothing vents into it, you may be weighing repair against removal. HomeGuide lists $1,000–$3,500 to rebuild a stack above the roofline and $500–$2,500 to remove the stack above the roof. Removal is a roofing job as well as a masonry one, and on a historic property it needs Historical Commission review first. Confirm that no appliance, including a water heater, still uses the flue.

What moves the price on a Philadelphia house

• Roof height and access. HomeGuide says high roofs can need scaffolding or a lift, and steep pitches need extra precautions. On a three-story rowhouse, ask how the crew will reach the roof and whether that is priced in.
• Number of flues. Some stacks carry two or three flues. Each appliance needs its own sealed connection, and more flues mean more material and labor.
• Offsets and bends. Chimneys that aren’t straight cost more to line and may need a cast-in-place liner instead of a steel one.
• Stack condition. HomeGuide says relining requires the stack and masonry to be in good condition, so spalled brick or a failed crown gets fixed first.
• Old liner removal. Cracked clay tiles that must come out add $500–$2,500.

Getting quotes you can compare

Ask each contractor to put these in writing:

• The inspection level they did, and the camera footage or photos behind any “needs relining” finding
• Liner material, diameter and length, and whether insulation is included
• Cap, top plate and connections, and removal and disposal of the old liner
• Any masonry, crown or flashing work, priced as separate lines
• Who pulls the permit and whether fees are included, plus their Philadelphia Contractor License number and proof of insurance
• The warranty and the payment schedule

HomeGuide warns about inspectors who call a chimney dangerous and push a full reline when there may be no damage, and suggests getting several estimates, an itemized contract, and avoiding large upfront or cash payments.

Help paying

Income-eligible homeowners can call the Heater Hotline at (215) 568-7190 for free emergency heater repairs. PHDC’s Basic Systems Repair Program and the Restore, Repair, Renew loan program may also help. Paying for chimney and heater repairs.