Detached Garage Cost Estimator
Installed detached garage pricing by size and bay count — foundation, framing, roofing, and doors, sized to Florida wind code.
Detached Garage Cost Estimating in Florida
A detached garage is treated as a full structure under Florida building code — it needs its own engineered foundation, wind-rated roofing, and, if it will include living space above, a different cost profile entirely.
We build detached garage estimates for homeowners and builders, covering single, double, and triple-bay garages, with or without workshop space or a bonus room above, sized to your lot and local code.
Because a detached garage is a standalone structure, it needs its own foundation, wall framing, and wind-rated roof system meeting the same code standards as the main house — not a simplified accessory-building spec. Setback and permitting requirements referenced in the estimate follow model code adopted by the International Code Council.
Estimates account for door count and size, electrical rough-in, and any additional finish (drywall, insulation) if the space will be used as a workshop or conditioned space rather than basic storage.
If you're comparing this estimate against a contractor bid, expect close alignment on materials and labor with some variation in overhead and profit margin, which differs contractor to contractor. Estimates that differ significantly from ours in either direction are worth a closer look before signing, since either scope is being missed or the contractor is pricing outside the typical range for the work involved.
What Drives Detached Garage Costs
Six factors move a Florida detached garage estimate the most.
No two projects move through this checklist the same way. Two homes or two jobs of similar size can land on opposite ends of the price range below depending on how many of these factors apply and how significant each one is, which is why we walk through each of them individually rather than relying on a single blended rate. Foundation and framing cost assumptions track data published by the National Association of Home Builders.
Bay Count & Size
Single, double, and triple-bay garages scale material and labor cost directly with square footage.
Roof & Wind Rating
Florida wind code requires engineered roof framing and rated garage doors, especially in coastal wind zones.
Foundation
A monolithic slab is standard, though flood zone properties may require an elevated foundation.
Bonus Room Above
Adding conditioned living space above the garage significantly increases cost versus a simple storage structure.
Electrical & Finish
Workshop-grade electrical and interior finish (drywall, insulation) add cost beyond a bare-shell garage.
Permit & Setback Compliance
Detached structures must meet local setback requirements and typically require a full building permit.
Typical Florida Detached Garage Costs
Ranges reflect fully installed cost for common detached garage configurations.
A double-bay detached garage with basic electrical and no bonus room commonly lands between $50,000 and $75,000 in most Florida markets. Adding a bonus room above roughly doubles the project cost given the additional foundation, framing, and finish requirements.
Garage door count and rating are a meaningful line item on their own — wind-rated doors required in most of Florida cost more than standard non-rated doors sold in other regions.
Keep in mind that published price ranges reflect typical market conditions; unusual site access, rush scheduling, or specialty material requests can move a specific project outside these ranges in either direction. Your delivered estimate will reflect your actual project details rather than the midpoint of a general range.
| Configuration | Installed Cost Range |
|---|---|
| Single-bay (12 x 20 ft, 240 sq ft) | $24,000 – $38,000 |
| Double-bay (24 x 24 ft, 576 sq ft) | $48,000 – $78,000 |
| Triple-bay (36 x 24 ft, 864 sq ft) | $68,000 – $110,000 |
| Bonus room above (per sq ft, add) | $140 – $210 |
| Garage door (per door, wind-rated, installed) | $1,800 – $3,800 |
| Electrical rough-in (workshop-grade) | $2,500 – $5,500 |
Planning a Detached Garage?
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How We Build Your Garage Estimate
Four steps from garage plans to a delivered estimate.
The process below is designed to get you a usable number quickly without sacrificing accuracy. Most of the back-and-forth happens up front, during the scope and detail-gathering step, so nothing has to be revisited once pricing is underway.
Garage Details
Send desired size, bay count, and whether you want a bonus room or workshop finish.
Code & Site Review
We check wind zone, flood zone, and local setback requirements for your address.
Full Cost Buildout
Foundation, framing, roofing, doors, and electrical are priced together for a true installed total.
Delivery
You receive a line-item PDF estimate ready for bidding or budgeting.
Common Detached Garage Estimating Mistakes
These mistakes are the most common causes of detached garage budget surprises.
Most of the mistakes below aren't obvious until the invoice arrives or a change order shows up mid-project. Reviewing this list before you sign a contract, whether you're the property owner or the one submitting the bid, is the fastest way to catch a scope gap while it's still cheap to fix.
Underrated Doors
Non-wind-rated garage doors don't meet Florida code in most jurisdictions and will fail inspection.
Skipping Setback Check
Detached structures must meet setback rules that can limit placement and size on smaller lots.
Flood Zone Oversight
Properties in flood zones may require an elevated foundation that significantly changes cost.
Vague Bonus Room Costing
Conditioned living space above a garage costs far more per square foot than the garage itself and needs separate pricing.
Basic Electrical Assumption
Workshop use often needs more circuits and higher-amp service than a simple storage garage.
One Flat Per-Bay Rate
Bay count alone doesn't capture door count, finish level, or foundation type differences between projects.
Detached Garage Estimates Across Florida
We build detached garage estimates for homeowners and builders statewide.
Our estimates support homeowners adding vehicle storage, workshop space, or a bonus room, and builders bidding detached garage packages as part of a larger project.
We account for Florida's wind and flood zone requirements by region, so foundation and door specifications in your estimate reflect what will actually pass permit review.
Estimates are delivered as a clean, line-item PDF ready for bidding, budgeting, or lender documentation.
We work directly with homeowners and property owners as well as with contractors who use our numbers to build or check their own bids, so the estimate is written to be useful either way: detailed enough to hand to a contractor as a scope of work, and clear enough to use for your own budgeting without a construction background.
Get Your Garage Estimate
Send your garage details today and get pricing back in 48 hours.
How to Use This Estimate
Once you have your number, here's how most people put it to work.
If you're a homeowner planning to hire out the work, use the itemized breakdown to request bids from two or three licensed, insured contractors and compare each bid line by line against ours, flagging any category that's missing or priced well outside the range shown.
If you're a contractor using this as a second opinion, cross-check our quantities and unit pricing against your own takeoff before finalizing a bid. Discrepancies usually point to a missed scope item on one side or the other, and it's better to catch that before submission than after you've won the job.
If the estimate is for planning or financing purposes, a renovation loan application, an insurance conversation, or simply deciding whether a project is affordable this year, the PDF is formatted to stand on its own as documentation, with your project details, itemized costs, and the preparation date clearly noted.
We're also available to answer follow-up questions about anything in the estimate at no additional cost. If a line item doesn't make sense, or you want to understand why a particular factor moved the price, ask before you use the number for a bid or budget decision.
Estimates are typically valid for 30-60 days from delivery, since material pricing can shift over longer periods. If your project timeline stretches beyond that window, let us know and we can refresh the numbers before you lock in a contractor.
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Why Homeowners and Contractors Trust This Estimate
Four things separate a useful estimate from a rough guess.
Every estimate we deliver is built from real, current material and labor pricing for your specific Florida market, not a generic national average pulled from an online calculator. We track regional supplier and labor cost data across the state and update our pricing models regularly, so the number you receive reflects what a licensed contractor will actually quote, not an industry-wide guess.
We've delivered more than 1,000 cost estimates to homeowners, contractors, and property managers across Florida, spanning nearly every trade and project type. That volume means our estimators have seen the real range of outcomes on similar projects, including the version of the job that goes smoothly and the version that runs into complications, and we price accordingly rather than optimistically.
Every estimate is itemized by material, labor, and any relevant permit or code-compliance cost, rather than delivered as a single lump-sum number. That transparency makes the estimate useful for three purposes at once: budgeting your own project, comparing competing contractor bids apples-to-apples, or supporting a lender, insurer, or HOA approval that requires documented figures.
There's no obligation attached to requesting an estimate and no pressure to hire a specific contractor afterward. Many homeowners and businesses who use this service already have a contractor in mind and simply want an independent number to check the bid against before signing; others use the estimate to decide whether a project fits their budget before reaching out to contractors at all.
Our estimators come from construction and trade backgrounds rather than pure data-entry roles, which means the numbers you receive reflect real field judgment about how a project like yours typically unfolds, not just a spreadsheet formula applied to square footage.
Detached Garage Cost FAQs
How much does a detached garage cost in Florida?
A double-bay detached garage typically runs $48,000-$78,000 fully installed, depending on finish level and door count.
Does the estimate include garage doors?
Yes, wind-rated garage doors are priced per door based on your desired bay count and door size.
Can I add a bonus room above the garage?
Yes, a bonus room is priced as an add-on given its need for additional foundation support, framing, and conditioned finish.
Do detached garages need a permit in Florida?
Yes, detached garages are treated as full structures and typically require a complete building permit.
How does flood zone designation affect garage cost?
Properties in flood zones may require an elevated foundation, which can add significant cost versus a standard slab.
How fast can I get a detached garage estimate?
Most estimates are delivered within 48 hours of receiving your garage size and configuration details.
Get Your Detached Garage Estimate
Send your garage details today and get installed pricing back in 48 hours.