Is this chimney repair estimate reasonable? Walking through a real New Jersey quote

New Jersey Chimney Co. · October 14, 2026

The quote

In May 2017, a buyer posted on the City-Data New Jersey forum asking whether a chimney estimate was unreasonable. The house was a 1,200 square foot ranch in Matawan. After a Level II chimney inspection, the buyer was handed a total of $11,885, in three parts: $5,800 for the flue, firebox and smoke chamber; $4,235 for the crown, flashing and mortar; and $1,850 to reline the boiler and water heater flue.

It is a useful example because it is real, it is itemized, and it is the kind of number that makes buyers wonder whether to walk away. Below we compare each line with the typical 2026 New Jersey ranges we publish. The quote is nine years old, so read the comparison as a sense check, not a verdict on that company.

Line 1: $5,800 for the flue, firebox and smoke chamber

This is the fireplace side of the chimney. A stainless liner for a fireplace flue typically runs $1,500–$5,000. Firebox and smoke chamber repair typically runs $300–$2,500, and smoke chamber parging alone $800–$2,000. A liner plus parging plus some firebox repair can reach $5,800 without anything unusual going on.

This is also the line with the most room for choice. If you plan to use the fireplace, it is safety work and belongs in the budget. If you do not, a different plan is possible: seal and cap that flue, skip the liner and parging, and spend the money on the parts that protect the house. Ask for the liner's size, length and material in writing either way.

Line 2: $4,235 for the crown, flashing and mortar

This is the water line. Typical ranges are $600–$2,200 for crown work, $300–$1,800 for flashing and $500–$2,500 for repointing. Added together that is roughly $1,400 at the low end to $6,500 at the high end, and $4,235 sits in the middle.

This is the line we would least want a buyer to skip. A cracked crown and failed flashing let water into the masonry and the ceiling below, and in a state that sees around 80 to 140 freezing nights a year depending on where you live (NOAA 1991–2020 normals), that water freezes in the brick and the damage grows every winter.

Line 3: $1,850 to reline the boiler and water heater flue

A liner for a furnace, boiler or water heater typically runs $625–$2,250, so $1,850 is inside the range. This line is tied to safety and to paperwork: when a boiler or water heater is replaced, New Jersey's F-370 chimney verification requires a professional to confirm the chimney is lined and sized for it.

The buyer in the thread also asked whether the appliances could simply be vented out the wall instead. The answer given there was that only newer high-efficiency units can be direct-vented; older ones need a lined chimney. So the cheaper path may depend on whether you are replacing the boiler soon anyway.

So was it unreasonable?

On these numbers, no single line looks out of place. What the quote did not show was which parts were urgent and which were optional, and that is what changes the buyer's decision. Other City-Data threads show the usual outcomes: one seller offered a $1,000 credit, and another buyer negotiated a $5,000 credit on a $10,000 estimate. An itemized quote with photos is what gives a buyer the footing to ask for that.

A 2009 thread from Bergen County posters asked whether to pay $350 for a camera inspection or get a free quote from a repair company. Our answer is the same as our policy: the inspection is free, with photos and a written price, and a camera scan, when a hidden problem is suspected, is priced at the inspection.

How to read any chimney estimate

Whatever company wrote it, a fair estimate lets you answer these questions without calling back.

• Is every item priced on its own line, not as one lump sum?
• Is there a photo of each defect?
• For a liner: material, diameter, length and what appliance it serves.
• Which items are safety, which keep water out, and which are cosmetic?
• Is the permit included, and who signs the F-370 if an appliance is involved?
• Does it say what happens if more damage is found once work starts?