Attic Insulation cost in St. Augustine, FL
St. Augustine, FL · updated August 2026
$2,900
Typical local cost
$1,200 – $7,700
Typical range
- per sq ft of attic floor
- $1 – $4.50
- Permit
- Usually no
- Typical timeline
- 1 day of work
Installed, local pricing
$0 – $150 in fees
1 day of work
St. Augustine runs +2% against the U.S. average · data confidence Medium · modeled estimate, not a quote
The modeled midpoint for St. Augustine is $2,900. The local adjustment for this trade is x1.021 — driven mainly by St. Johns County labor rates and 5% exposure to local code requirements.
Estimate your St. Augustine job
Priced with this market's cost index, so the calculator, the size table and the ranges on this page all agree.
Square footage
180 sq ft
- With waste allowance
- 198 sq ft
- Square yards
- 20
- Perimeter (per area)
- 54 ft
- Square meters
- 16.72
Priced for St. Augustine (local adjustment x1.021).
Estimates only. Local pricing, site conditions and code requirements change the real number.
Cost by project size
Generated from the same unit pricing the calculator uses.
| Project size | Estimated range |
|---|---|
| 600 sq ft of attic floor | $600 – $2,700 |
| 800 sq ft of attic floor | $800 – $3,600 |
| 1,000 sq ft of attic floor | $1,000 – $4,500 |
| 1,300 sq ft of attic floor | $1,300 – $5,900 |
| 1,700 sq ft of attic floor | $1,700 – $7,700 |
Based on St. Augustine pricing of $1–$5 per sq ft of attic floor.
Where the money goes
- Labor
- $1,000
- 34% of median
- Materials
- $1,900
- 64% of median
- Permit & fees
- $75
- 3% of median
St. Augustine project costs+2% vs U.S. average
Based on St. Johns County labor rates, local material logistics and permit-fee posture for this trade.
What the project looks like start to finish
Typical sequence for this scope. Timing varies with contractor backlog and plan-review queues.
01
Planning & quotes
Scope, material choice, contractor selection
02
Scheduling
No permit typically required for this scope
03
Materials & staging
Order lead time on non-stock materials
04
Installation
1 day of work
05
Closeout
Final sign-off, warranty and documentation
St. Augustine labor intelligence
What the trade charges here, and how much of your price it is.
Loaded hourly rate
$75–$97
Energy crews in St. Johns County · 0% vs U.S. ($85/hr)
Typical crew
2 × 0.5 days
On-site time for a typical insulation job here.
Labor in the price
$1,000
35% of the median — the rest is material, disposal and permit.
Because labor is 35% of this job, St. Augustine wage levels move the price far more than material prices do. A quote well under this labor figure usually means a smaller crew, a longer schedule, or unlicensed help.
Basis: Hometriva labor model: national energy crew rates adjusted by the St. Johns County labor factor (x1.000). · BLS Occupational Employment and Wage Statistics, Hometriva methodology
Why St. Augustine differs from the national average
The local delta, broken into dollars by driver.
Material and delivery+$50
Materials are nationally traded, so they move less — but delivery into this market runs 3% over baseline because of coastal logistics.
Basis: Decomposition of the modeled St. Augustine median against the U.S. median for this scope. · City of St. Augustine building department, Hometriva methodology
St. Augustine vs Florida vs the U.S.
Change the inputs, see your number
The same local model, run against your job instead of the average one.
Simulated attic insulation in St. Augustine
$2,975
Likely range $1,275 – $7,775
Simulated from the same local model as the numbers above — it changes the inputs, not the pricing method.
What makes the number move
- Attic square footage and existing R-value
- Blown cellulose or fiberglass versus spray foam
- Air sealing of penetrations before insulating
- Attic access and headroom
- Removal of contaminated existing insulation
Who issues each permit
Tracked per discipline — the building permit issuer is not always the body that reviews electrical, plumbing, zoning or fire.
| Discipline | Issuing authority |
|---|---|
| building | City of St. Augustine building departmentModeled estimate |
| electrical | City of St. Augustine building departmentModeled estimate |
| mechanical | City of St. Augustine building departmentModeled estimate |
| plumbing | City of St. Augustine building departmentModeled estimate |
| zoning | City of St. Augustine building departmentModeled estimate |
| fire | City of St. Augustine building departmentModeled estimate |
Permit requirement in St. Augustine
A permit is usually not required for attic insulation on its own. St. Augustine still applies zoning rules such as setbacks, lot coverage and HOA approval, and any structural, electrical or plumbing work added to the job does need a permit.
- Permitting authority
- City of St. Augustine building departmentModeled estimate
- Permit fee
- Estimated allowance $0–$150Modeled from comparable fee schedules — not an official quoted fee.
Local conditions that change this job
Only the exposures that materially affect attic insulation.
Cooling load / heat exposure
High77/100
Solar irradiance
Severe82/100
Humidity
Severe84/100
Historic district properties face additional design review that can add weeks to exterior projects.
Nearby market comparison
| Market | Local factor | Median | Per sq ft of attic floor |
|---|---|---|---|
| St. Augustine (this page) | x1.021 | $2,900 | $1 – $4.50 |
| Jacksonville | x0.983 | $2,800 | $1 – $4.50 |
| Daytona Beach | x1.003 | $2,800 | $1 – $4.50 |
| Gainesville | x0.952 | $2,700 | $1 – $4.50 |
What St. Augustine homeowners actually paid
Homeowner-reported invoices for this market. Nothing is published until enough reports clear review, so this section is often empty in newer markets — adding yours takes 20 seconds and no personal details.
Quotes homeowners were given in St. Augustine
Quotes run ahead of final invoices. Reporting yours shows the local spread and where there is room to negotiate.
How Hometriva estimates St. Augustine insulation costs
Hometriva does not publish invented city prices. The St. Augustine estimate for attic insulation is produced by this chain, and every input is stored separately:
- National baseline$2,800
Typical U.S. cost for attic insulation on a single-family home.
- Local labor factorx1.000
St. Augustine-area trade labor rates, weighted at 35% of this job.
- Material factorx1.029
Material and delivery pricing into St. Johns County, weighted at 65%.
- Regulatory factorx1.040
Local code, product-approval and inspection load, applied at 5% for this project type.
- Applied multiplierx1.021
Blended St. Augustine adjustment specific to attic insulation.
- Permit component$0 – $150
Budgeted separately from the contract price because it is paid to the jurisdiction.
Because labor, material and regulatory factors are weighted per project, attic insulation in St. Augustine carries a different local adjustment than other trades in the same market.
Reviewed by
Hometriva Cost Data Desk
Maintains the unit-cost baselines, local adjustment factors and material pricing. Reviewed for attic insulation pricing in St. Augustine, FL.
- • National unit-cost baselines against current trade pricing
- • Local labor and materials factors for the market
- • Material installed-cost ranges and service life
Last reviewed August 2026 · Editorial standards · Report an error
Frequently asked questions
What R-value does Florida require in the attic?
The Florida Energy Conservation Code generally calls for R-30 to R-38 in a vented attic for a residential retrofit. Check with your building department, since the requirement depends on assembly type.
How long does attic insulation take?
1 day of work. Permit review and inspection scheduling are usually the largest source of variation.
What changes the price the most?
The largest cost drivers are attic square footage and existing r-value; blown cellulose or fiberglass versus spray foam; air sealing of penetrations before insulating.
Sources
Sources & verification
- City of St. Augustine building department
- St. Augustine permit portal
- Florida Building Commission
- BLS Occupational Employment and Wage Statistics
Model vintage August 2026. The links above are the issuing agencies' own pages — we publish them so you can confirm the current rule yourself, not as evidence that each fact on this page was re-checked with them today. Cost figures are modeled estimates based on national baselines adjusted for local labor and material pricing, not quotes. Permit rules change; confirm with the building department before starting work.