Chimney Rebuild Cost Calculator

Rebuilding brick course by course is labor and access, not material. Total your quote for a partial rebuild above the roofline or a full tear-down.

Planning estimate: this is a planning estimate from the numbers you enter — not a bid or a contract. Chimney and masonry price depends on access and scaffolding, the extent of the damage, materials, chimney height, roof pitch, permits and local labor. Get itemized written quotes from a CSIA-certified sweep and a licensed, insured mason before you commit.

1 Enter your numbers

$
Brick, block, mortar, a new crown and cap
$
The dominant line on a rebuild
$
Decimal — 0.10 means a 10% cushion
Your result
Estimated total$2,310
Brick & mortar materials$400
Labor$1,400
Access / scaffold$300

A rebuild replaces failed masonry course by course — labor and access dominate, about $2,310 here. A partial rebuild above the roofline is common; a full rebuild to the firebox is a major job and a licensed mason’s call.

A rebuild is not a repair — it is taking the chimney apart course by course and laying it back up. Because the brick is cheap and the labor is not, a rebuild estimate is really a labor and access estimate with a modest material line riding along. The single biggest decision is how far down you go: a partial rebuild above the roofline (where freeze-thaw does its worst) is the common job, while a full rebuild down to the firebox is a major structural undertaking a mason has to scope in person.

Watch for the quiet extras a rebuild forces: a new crown and cap are usually cast and set as part of the work, and reflashing where the new brick meets the roof is common. If your bid does not mention them, ask — they belong in the materials line here.

Formula

Same cost sum, no discount field because rebuilds are rarely discounted:

total = (materials + labor + access) × (1 + contingency)

Rebuild scope scales roughly with height — every course above the roof is more brick to strip, haul and relay — so a taller stack pushes the labor line, not a stored price.

Worked example

A two-story home needs the top ~6 ft of a leaning, spalled chimney taken down and rebuilt above the roofline, with a fresh crown and cap. The mason quotes $520 in brick, mortar, crown and cap, $1,780 labor, and $360 for scaffold. Because it is a tall, exposed job you carry a 12% contingency:

(520 + 1,780 + 360) × 1.12 = 2,660 × 1.12 ≈ $2,979

Compare that with just repointing the same brick — if the courses are only surface-spalled, tuckpointing may buy years for a fraction of the rebuild.

Partial vs full — and what a rebuild pulls in with it

  • Decide the cut line first. Above-the-roofline rebuilds are the workhorse job; a full rebuild to the firebox is far larger and is strictly a licensed mason’s call, not a DIY.
  • Include the crown, cap and flashing. New masonry almost always gets a new crown and cap; reflashing the roof joint is common. Put them in the materials line so your total is honest.
  • Factory-built alternative. If the structure allows it, a listed factory-built chimney can be cheaper and faster than full masonry — price it with the new-chimney tool before you commit to brick.
  • Rebuild or reline? If the brick is sound but the flue is cracked, you may need a reline, not a rebuild. They solve different problems.

Reference table

Labeled planning bands for a rebuild and the lighter masonry jobs it competes with — use them to sense-check the decision, not to price it:

Masonry jobTypical planning band
Chimney rebuild$1,000–$6,000
Crown repair / replacement$200–$3,500
Tuckpointing (per linear foot)$8–$25 / linear ft

These are labeled planning bands — a reality check on a written quote, never a price you should expect to pay. Chimney cost swings with roof access and scaffolding, chimney height, roof pitch, how far the damage runs and local labor. Enter the real figures from your itemized quote above, and get that quote from a CSIA-certified sweep and a licensed, insured mason.

Frequently asked questions

Do I need a full rebuild or just a repair?
If the brick above the roofline is leaning, badly spalled or the mortar is gone, a partial rebuild is on the table. If the faces are only flaking, repointing (tuckpointing) is often enough. A licensed mason should make the call after looking at how deep the damage runs.
Why is labor most of a rebuild?
Taking a chimney down and relaying it is slow, careful hand work at height. Brick and mortar are inexpensive; the days on the scaffold are not, which is why a taller stack costs more even with the same brick.
Is a factory-built chimney cheaper than rebuilding masonry?
Often, yes — a listed metal chimney can be faster and lighter than laying brick, where the appliance and structure allow it. Price both; the new-chimney tool estimates the factory-built route.
Does a rebuild need a permit?
Frequently. Structural masonry and anything touching venting or clearances is a local-code and AHJ matter. Confirm with your building department and follow NFPA 211 and the appliance instructions — this tool only estimates cost.

Related calculators

Chimney Repair CostEstimate a chimney repair from your own materials, labor and roof-access numbers. Transparent formula, worked example and a masonry cost-band sanity check.Tuckpointing CostEstimate chimney tuckpointing (repointing) cost by the linear foot of mortar joint. Enter footage and rate for a transparent total, worked example and band.Brick / Spalling Repair CostEstimate spalled brick repair cost by the brick. Count the flaking bricks, enter a per-brick rate, and total materials plus access with a worked example.New-Chimney Construction CostEstimate building a new chimney from your quote: materials, labor and access. Priced roughly by height; masonry is a licensed mason and permit job.