Stucco Repair Cost Calculator
A stucco repair cost calculator multiplies the damaged area by material and labor rates: an 80 sq ft patch at $3 + $5 per sq ft comes to $640.
Stucco repair cost calculator formula
A stucco repair cost calculator multiplies the damaged area by two rates. The formula is total cost = repair area in square feet × (material rate + labor rate).
Enter the length and height of the repair area in feet, and a material and a labor rate per square foot. The defaults are 10 ft by 8 ft, $3 material and $5 labor. The calculator reports the area, the material, the labor and the total. Replace both rates with quotes from local plasterers.
Worked examples
Example 1 is the default repair, a wall section 10 ft wide and 8 ft high.
- Area: 10 × 8 = 80 sq ft
- Material: 80 × $3 = $240
- Labor: 80 × $5 = $400
- Total: $640
Example 2 is a small patch below a window, 6 ft by 4 ft, at $4 material and $9 labor.
- Area: 6 × 4 = 24 sq ft
- Material: 24 × $4 = $96
- Labor: 24 × $9 = $216
- Total: $312
The small patch costs more per square foot, $13 against $8, because the crew still has to set up, mix and match the texture. Some plasterers have a minimum charge for small jobs, so ask.
What the rates should cover
| Item | Where to include it |
|---|---|
| Stucco mix, bonding agent, lath patches | Material rate |
| Texture and color matching | Material and labor rates |
| Scraping and cleaning the area | Labor rate |
| Scaffold or ladder setup | Labor rate or separate |
| Primer and paint | Often separate |
| Moisture repair behind the wall | Separate |
| Crack sealing | Material and labor rates |
Cosmetic crack repair needs a flexible sealant, while a patch needs a new layer that bonds to the old. Ask your plasterer for the plan, and for the number of coats they will apply.
Types of damage and what they mean
| Damage | Common cause | Repair |
|---|---|---|
| Hairline cracks | Shrinkage and small movement | Seal and paint |
| Wider or growing cracks | Settling or movement | Have the cause checked before repairing |
| Bulges and soft spots | Water behind the stucco | Open, dry and repair, with an inspection |
| Chips and impact damage | Mowers, ladders, hail | Patch to match |
| Stains below windows | Leaks at the window | Fix the flashing, then clean |
Water is the cost driver. If the stucco is damp or the sheathing is soft, a surface patch will not last. A building inspector or a qualified stucco contractor can tell you how far the damage reaches. For wide or recurring cracks, a structural engineer can check the building.
How to measure
- Measure each damaged area as length × height.
- Add a border of 6 to 12 inches, since sound edges need to be feathered in.
- Check the wall above and below. Water runs, so the visible stain may be smaller than the damage.
- Take photos with a tape or a coin for scale. Contractors can often give a first estimate from photos.
- Count the stories. Work above ground level costs more.
Common mistakes
- Covering damp stucco with fresh stucco or paint.
- Using only the visible stain as the area.
- Ignoring the color match. A patch can be repainted, but the whole wall may need it.
- Using a general patching product that does not bond to old stucco. Follow the product instructions.
- Taking the calculator as a quote. It is a quick estimate from the two rates you give it.
Related calculators
To estimate the stucco material for a new wall, use the stucco calculator. For an overlay on a concrete surface, the concrete resurfacing cost calculator is similar, and the chimney repair cost calculator handles masonry above the roof.
Frequently asked questions
What's included in this stucco repair cost estimate?
Two lines: material and labor, each at a rate per square foot of the repair area. The defaults are $3 and $5, so an 80 sq ft repair totals $640. Scaffolding, paint, lath replacement and moisture repairs are not separate lines, so build them into the rates or add them to the total.
Why does texture matching add to the cost?
Stucco finishes vary by texture, color and the skill of the plasterer. A patch that does not match shows from the street. Matching takes trial samples and sometimes paint over the whole wall, so a small repair can cost more per square foot than a large one.
How do I know if stucco damage is from moisture, not just cracking?
Look for stains, soft or bulging spots, mold, cracks that keep returning, or damp walls inside. Hairline cracks are common and often cosmetic. Water behind stucco can rot the framing, so have a qualified inspector check any suspected moisture before you patch over it.
How do I measure the repair area?
Measure the damaged section's length and height in feet and multiply. A patch 10 ft wide and 8 ft high is 80 sq ft. If there are several patches, measure each and add them. Add a margin around each, since the repair edge needs sound stucco to blend into.
Estimates only. Verify quantities with your supplier before purchasing.