Whether you’re replacing an aging garage door, building a new home, or planning a detached garage, one of the first questions to answer is simple: what garage door size do I actually need? The good news is that most residential garage doors are built around a handful of standard sizes that fit the vast majority of homes. The most common sizes are 9 feet wide by 7 feet tall for a single-car door and 16 feet wide by 7 feet tall for a double-car door -but those are far from your only options.
In this guide, we’ll walk through every standard residential garage door size, when a custom size makes more sense, how to measure your opening like a pro, and how size affects price and installation. If you’re shopping for a new door or just trying to figure out what fits, this is the only sizing resource you’ll need.
Quick Reference: Standard Garage Door Sizes
If you’re short on time, here’s the cheat sheet. Widths and heights are listed in feet.
| Door Type | Width | Height | Best For |
|---|---|---|---|
| Single-Car | 8 ft | 7 ft | Compact garages and many older homes |
| Single-Car | 9 ft | 7 ft | The most common single-car size -fits most sedans, SUVs, and mid-size trucks |
| Single-Car | 10 ft | 7 ft | Full-size pickups, lifted vehicles, or extra side clearance |
| Double-Car | 12 ft | 7 ft | Older or smaller two-car garages (tight for two vehicles) |
| Double-Car | 14 ft | 7 ft | Compact two-car garages |
| Double-Car | 16 ft | 7 ft | The modern double-car standard -fits most two-vehicle households |
| Double-Car | 18 ft | 7 ft | Wider two-car garages or homes with full-size trucks and SUVs |
| Tall / Truck | 9–18 ft | 8 ft | Lifted trucks, taller SUVs, cargo vans |
| RV / Oversized | 12–16 ft | 10–14 ft | RVs, boats, fifth wheels, work vans |
Single-Car Garage Door Sizes
Single-car garage doors are designed to fit one vehicle. Standard widths are 8, 9, and 10 feet, almost always at a 7-foot height. Here’s how to pick the garage door size for your home:
- 8 ft wide: Common in older homes and compact garages built before the SUV era. It works for most sedans and small crossovers but can feel snug for full-size vehicles.
- 9 ft wide: The single-car standard. It comfortably fits sedans, SUVs, and mid-size pickups, with enough side clearance to open doors and walk past the vehicle.
- 10 ft wide: A great choice if you drive a full-size pickup, a lifted truck, or a wider SUV. The extra foot also makes loading gear or wheeling out a bike noticeably easier.
Heights are usually 7 feet, but 8-foot tall single-car doors are an option if you have an oversized vehicle or want extra ceiling room for storage.
Double-Car Garage Door Sizes
Double-car doors are wider, single-panel doors that span the full opening -not two single doors side by side. Standard widths are 12, 14, 16, and 18 feet.
- 12 ft wide: Sometimes seen in older homes built when vehicles were smaller. It’s a tight fit for two modern cars and is more often used as an oversized single-car door today.
- 14 ft wide: Common in compact two-car garages. Two small or mid-size vehicles will fit, but pulling in straight takes practice.
- 16 ft wide: The default double-car size for most modern homes. It comfortably fits two mid-size vehicles or a single oversized one.
- 18 ft wide: Ideal if you have full-size trucks, an SUV plus a sedan, or you simply want more breathing room when parking. It also makes the garage feel more open.
Garage Door Heights: 7 ft vs. 8 ft (and Beyond)
The standard residential garage door height is 7 feet. That’s the size most homes have been built around for decades, and it works perfectly for the average car or SUV.
8-foot tall doors have become more popular as trucks and SUVs have grown. If you drive a lifted truck, a tall work van, or anything with a roof rack and a kayak strapped on top, an 8-foot door is worth strongly considering.
Anything taller than 8 feet -typically 9, 10, 12, or even 14 feet -moves into RV, boat, and oversized-vehicle territory. These doors often need additional structural framing and a higher-capacity opener.
RV and Oversized Garage Door Sizes
If you store an RV, boat, or large work vehicle, you’ll need a door taller and wider than the residential standard. Common oversized sizes include:
- 12 ft wide x 12 ft tall – fits most Class C motorhomes and many travel trailers
- 14 ft wide x 14 ft tall – common for Class A motorhomes and larger fifth wheels
- 16 ft wide x 14 ft tall – designed for the largest RVs and dual-axle boats on trailers
Keep in mind: an oversized door also requires extra ceiling height and stronger framing in the garage itself, so it’s worth involving a professional during the planning stage rather than after the fact.
When to Choose a Custom Garage Door Size
Standard sizes work for most homes, but they don’t work for every home. A custom size might be the right call if:
- Your existing opening doesn’t match a standard width or height (common in historic homes, custom builds, or barn-to-garage conversions).
- You’re combining two single-car openings into one wide opening, or vice versa.
- You need a door wider than 18 feet or taller than the standard oversized options.
- You want a one-of-a-kind look for a luxury home, carriage house, or detached workshop.
Custom doors typically take longer to manufacture and cost more than standard sizes, but the trade-off is a door built specifically for your opening, with no awkward filler panels or trim work. Our team can help walk you through whether a custom residential garage door is the right move for your project.
How to Measure Your Garage Door Opening
Before you order a new door -or even just call for a quote -it helps to have rough measurements ready. You’ll need a tape measure, a pen, paper, and about ten minutes to find the correct garage door size.
- Measure the width. From the inside of the rough opening, measure the distance between the framed sides at the widest point. Round to the nearest inch.
- Measure the height. Measure from the floor to the top of the framed opening at the tallest point.
- Measure headroom. This is the distance from the top of the opening up to the ceiling or the lowest obstruction. Standard tracks need 12–15 inches; low-headroom kits can squeeze into less.
- Measure backroom. From the front of the opening to the back wall, measure straight back. As a rule of thumb, you’ll want the door’s height plus about 18 extra inches.
- Measure side room. From each side of the opening, measure to the nearest wall. Standard residential tracks need at least 3¾ inches per side.
Write everything down before you call. If your measurements come back unusual or your garage is an oddly framed space, don’t worry -that’s exactly when a professional in-home assessment pays off.
Headroom, Backroom, and Side Room Requirements
Even if your opening matches a standard width and height perfectly, the door still needs space around it to operate. Here’s what most residential systems need:
- Headroom: 12 to 15 inches above the opening for standard tracks. Low-headroom kits are available if your ceiling is tight.
- Backroom: The door’s height plus about 18 inches of clear space behind the opening, so the door has somewhere to go when it rolls up.
- Side room: At least 3¾ inches on each side for the vertical tracks.
Manufacturers and trade groups like the Door & Access Systems Manufacturers Association (DASMA) publish detailed technical data sheets on clearance requirements that contractors reference when planning installations.
How Garage Door Size Affects Price
Bigger doors cost more -but size is just one of several variables. The biggest cost drivers are:
- Garage Door sizes and weight. More square footage means more material and, often, heavier-duty hardware to support it.
- Material. Steel is the most affordable, followed by composite, then real wood and full-view aluminum/glass at the top end.
- Insulation. Insulated doors cost more upfront but make a big difference if your garage is attached to your home or doubles as a workshop.
- Windows and design. Decorative hardware, windows, and custom finishes add cost.
- Opener compatibility. Larger and heavier doors may require a stronger opener -typically ½ HP, ¾ HP, or 1¼ HP, depending on the door.
If you’re weighing energy efficiency, the U.S. Department of Energy has helpful guidance on insulation and energy savings that applies to garages too -especially attached garages, where heat loss can affect the rooms above.
How to Choose the Right Garage Door Size for Your Home
If you’re building from scratch or replacing a non-standard opening, the size you choose will live with you for decades. A few practical things to think about:
- Your current vehicles and your next ones. Trucks and SUVs have only gotten bigger, so it’s smart to size for what you might drive in the future, not just what’s parked there now.
- How you actually use the garage. Storage, hobbies, a workshop, a gym? Wider and taller doors give you more flexibility.
- Resale value. A 16×7 double-car door is the most universally appealing size in most markets and is rarely a deal-breaker for buyers.
- Architectural style. A pair of 9-foot single doors often looks better on a traditional home than a single 18-foot door, even if the parking space is similar.
Still not sure? A quick conversation with a local pro is the fastest way to lock it down. Our garage door installation team can take field measurements, walk you through size and material options, and give you a real quote -not a ballpark.
Frequently Asked Questions
What is the most common residential garage door size?
The most common sizes in the U.S. are 9 ft wide x 7 ft tall for a single-car door and 16 ft wide x 7 ft tall for a double-car door. These two sizes cover the vast majority of homes built in the last several decades.
Can I replace a 7-foot tall door with an 8-foot tall door?
Sometimes -but it usually requires modifying the opening, headers, and framing, and it may also require a new opener and tracks. It’s worth getting a professional assessment before assuming it’s a simple swap.
How wide should my garage be compared to the door?
Plan for at least 3¾ inches of clearance on each side of the opening for the vertical tracks. Most builders allow a foot or more on each side for studs, drywall, and finishing.
Do I need a permit to change my garage door size?
Often, yes -especially if you’re widening or heightening the opening, since that involves structural changes. Permit requirements vary by city and county. A licensed installer can pull permits or tell you if they’re needed.
How long does a garage door installation take?
A standard residential replacement on the same opening usually takes 3 to 5 hours. Custom sizes, structural modifications, or new construction take longer.
Can I get a custom garage door size?
Yes. Most major manufacturers offer custom widths, heights, materials, and finishes. Lead times are longer than for stock sizes, and pricing is higher, but the result is a door built specifically for your opening.
Ready to Find the Right Garage Door for Your Home?
The right garage door comes down to size, style, and how you use the space -and we’re here to help you figure out all three. OGD® has been installing residential garage doors across the country for decades, and our local pros can walk your opening, take precise measurements, and recommend the size and style that fits your home best.Find an OGD location near you or request a free quote to get started. If you also need a new opener or are dealing with a noisy, slow, or stuck door, our garage door repair and garage door opener teams have you covered too.
