Introduction
Adding a rooftop deck above your garage can transform unused space into an outdoor oasis. Building a roof deck does need investment. If you’re wondering how much a garage with rooftop deck cost, you’re not alone.
This guide will break down all the specifics that influence garage with rooftop deck cost.
Average Cost of Garage
Rooftop Deck
$5 – $8 /sqft Wood Decking
$2-$3 /sqft Decking Installation
$15,000 – $30,000 Average Cost to Install
These estimates assume a deck size of 100-200 square feet. This is a typical smaller size range for many garage rooftop decks. They include costs for supplies, labor to construct the deck, and the budget needed.
We’ll explore how different factors affect the price. The goal is giving you a full understanding of what to budget for a garage with rooftop deck tailored to your needs.
cost to add roof to deck
Adding a roof to your deck typically costs between $14,000 and $31,000, depending on size, material, and design. The choice of materials, such as aluminum, wood, or vinyl, can significantly impact the overall cost. Whether you’re aiming for a simple lean-to or a more complex gable roof, understanding these factors is key to planning your project.
Roof Type | Average Cost |
---|---|
Simple Lean-To | $4,000 – $10,000 |
Gable Roof | $14,000 – $31,000 |
Flat Roof | $10,000 – $20,000 |
Hip Roof | $18,000 – $35,000 |
Garage Size and Deck Requirements
The size of your garage will impact the garage with rooftop deck cost. It’s important to measure your garage to understand what deck options will work best.
Most single-car garages are about 12 feet wide by 20 feet deep. This provides around 240 square feet of space. A double car garage is usually a few feet wider at 14 to 16 feet and deeper at 22 feet.
Think about how many people need to fit onto the deck and what activities you want to do up there. Will you need seating, a barbecue, or room for outdoor furniture? Sketch out some deck layouts to find the best fit for your needs and available garage footprint.
Garage with Rooftop Deck Cost By Deck Size
1-2 Car Garage Deck (150-250 sqft)
The budget necessary for building a deck atop a 1-2 car garage can vary significantly depending on the design and materials chosen.
Cost Category | Cost Range |
Material Costs | $75-125 per sqft |
Labor Costs | $50-75 per sqft |
Total Budget | $15,000 – $30,000 |
Potential Add-Ons for Garage with Rooftop Deck
Add-Ons | Cost Range |
Permits | $250-1000 |
Built-in Seating | $50-100 per linear foot |
Railing Upgrades | 10-30% of railing costs |
Custom Design Features | $100-200 per element |
Lighting Enhancements | $50-100 per fixture |
The budgets assume a standard wood deck built over an existing roof. Many factors impact the final price, so it’s best to get quotes from contractors. They can provide accurate estimates based on the specific project details.
Materials cost for Garage with Rooftop Deck
Let’s break down typical material costs on a per square foot basis. This will give an overview of the garage with rooftop deck cost per square feet.
Material Category | Cost Range (Per Square Foot) |
Decking | |
Wood decking | $5-8 (Installed) |
Composite decking | $7-10 (Installed) |
Railings | |
Cable railings | $10-15 (Per Linear Foot) |
Glass railings | $25-35 (Per Linear Foot) |
Wood railings | $15-20 (Per Linear Foot) |
Electrical | |
Lights and wiring | $3-5 (Per Square Foot) |
Outlets and switches | $100-150 (Each) |
Foundations & Framing | |
Footings and support | $4-6 (Per Square Foot) |
Lumber and hardware | $6-8 (Per Square Foot) |
Roofing | |
Replacement costs | $5-10 (Per Square Foot) |
Repair patchwork | $2-4 (Per Square Foot) |
Insulation | (if required) |
Rigid foam boards | $1.50-2 (Per Square Foot) |
These are average estimates to use when planning your budget. Garage with rooftop deck cost will depend on materials, deck size and customizations of your project.
Labor Cost Breakdown
Labor makes up a significant part of total project budgets. It is highly important to understand the each types of labor involve in garage rooftop deck. Estimated rates are:
Task | Cost Range |
Framing & Roof Installation | |
Framing Crew | $50-75/man hour |
Roofing Crew | $60-90/man hour |
Insulation Installation | |
Crew for Rigid Foam | $30-40/man hour |
Deck Construction Labor | |
Deck Framing Crew | $50-75/man hour |
Decking Installation | $2-3/sqft |
Railing Installation | $25-35/linear foot |
Stairs Construction | $150-250 per set of stairs |
Extra Fees | |
Project Management | 10-15% of material/labor |
Permit Fees | Varies by municipality ($250-1000 avg) |
As a general estimate, labor for a 200 sqft deck ranges from $5,000-$10,000 on average. Garage with rooftop deck cost depends on details of your project. Get quotes from 3 local contractors for accurate labor budgets.
This breakdown helps understand typical labor costs. Quotes will factor in your specific project needs.
Factors Impacting Garage with Rooftop Deck Cost

Many variables influence final pricing of roof deck. The major ones are location, structural requirements, and customizations.
Variable | Cost Impact |
Location | Urban/coastal areas cost more than rural due to rates. |
Structure | Reinforcement for old/undersized roofs adds $500-1000 avg. |
Customizations | Built-ins, specialty items increase complexity, +$50-100/sqft |
Materials | Upgraded options like composites or railings cost more. |
Discussing your specific needs helps contractors determine estimated impacts. Getting accurate quotes requires detailing project enhancements. Location, structure, customizations and material choices all affect the final budget.
Get Quotes from Contractors
Get free quotes from 3 local licensed contractors:
- Provide detailed drawings/list of planned features
- Ask about permits, fees, insurance requirements
- Request start/end timelines for construction
- Inquire about payment schedule and warranty policies
- Confirm estimates cover all outlined materials and labor
Comparing multiple written bids helps determine fair pricing for your area. Pick a contractor you trust and who takes the time to answer all your questions.
Cost Reduction Methods
Homeowners can reduce costs in a few ways:
Cost Reduction Method | Average Savings |
Reuse Existing Materials | 10-15% of materials costs |
Simplified Design + DIY Approach | 15-25% of total project costs |
Reuse existing materials when possible. For example, repairing the garage roof rather than full replacement. Reusing railings or lights avoids new purchases. This typically saves 10-15% on material costs.
Simplify the design and do some work yourself. Opt for lower-cost options like bare wood over paint. Use cable railings instead of glass. Complete tasks like framing to cut labor fees.
Financing Your Deck Project

Home equity lines of credit or loans can provide funding if needed. Rates depend on your creditworthiness. It’s wise to shop many lenders for the best terms.
Contractors may offer financing partnerships as well. Be sure to factor interest costs into your total budget. Checking savings and paying in full avoids ongoing costs.
Garage with rooftop deck Project Timeline
Most mid-sized decks take 4-6 weeks to complete once materials arrive. Contractors should provide a timeline including:
Following the schedule ensures timely finished product by summer. Accounting for potential delays prevents postponed enjoyment of your new outdoor space.
Conclusions
In conclusion, turning your garage roof into a deck is very doable and beneficial. Getting quotes from builders will give a good cost idea for sizes from 150-250 square feet. Simple design choices and reusing existing materials can reduce garage with rooftop deck cost.
Following the contractor’s timeline ensures enjoying your new relaxation space this summer. By planning and using the advice given, you can make your dream of an outdoor space above the garage come true. The investment will pay off in years of use and increased curb appeal for your home.
FAQ’s
Are rooftop decks expensive?
Yes, rooftop decks usually cost homeowners at least $10,000-15,000 due to extra materials and labor.
Does adding a roof deck add value?
Yes, it add value upto 30% of the total cost of the house. Buyers pay more for homes with outdoor space like a roof deck that they can enjoy.
Can you build a garage and put a deck on top of it?
Yes, it is possible but check with your city for permits first and hire a contractor experienced in roof deck construction.
How much does a roof top patio cost?
On average, roof top patios range between $15,000-$30,000 depending on the size and materials selected for the project.
What are the disadvantages of a roof deck?
Some potential downsides are increased maintenance and the risk of leaks if not installed properly. Noise transmission may also be an issue.