Building a garage, which typically costs between $ 16 , 000 and $ 42 , 000, is usually funded through home equity (HELOC or Home Equity Loan), cash-out refinancing, or personal loans. You can dramatically reduce costs by selecting post-frame (pole barn) construction, building prefabricated kits, or acting as the general contractor yourself.
Is it cheaper to build or buy a garage? Considering labor, materials, and features, it is cheaper to buy a garage, such as a prefab kit, than to build one from scratch.
A 24×24 garage is one of the best value sizes for homeowners needing two-car storage. In 2026, prefab garages typically start around the mid-$10,000s, while custom-built garages can range from the mid-$20,000s to $40,000+ depending on upgrades, materials, and site conditions.
The average cost of a standard-size one-car garage is around $20,000, but the price can range from $10,500 to $27,000. The price can go up to about $32,000 if you add extra workstations or storage space.
In many cases, adding a garage can boost home value anywhere from $12,000 to $30,000 or more, depending on size, quality, and location. According to HomeAdvisor, after constructing a garage, you can anticipate a return on investment of 60% to 70% when selling your home.
Pouring a 30x30 (900 sq. ft.) concrete slab typically costs between $5,400 and $10,800 fully installed, with a national average of roughly $8,100. The price ranges between $6 and $12 per square foot for labor and materials, depending on your specific project requirements.
The 10 year rule applies to any breach of use of land or buildings (excluding dwellings) which has not been challenged by enforcement action for the period of at least ten years. A garage conversion changes the use from a non dwelling (garage) to a dwelling (somewhere you will live).
In either case, most are looking to nip a little out of the budget where they can. There's one part of building a garage that costs a lot more than the rest: labor. Construction and labor are the bulk (50-75%!) of your garage budget. Is it realistic to cut labor costs and DIY?
In the majority of cases planning permission is not required for a concrete garage as they are classed by law as a temporary structure. You can find details of some of the factors that may trigger a need for planning below. In all cases we recommend checking with your local planning authority first.
Concrete Slab Foundation
Concrete slab foundations have a simple and fairly quick installation process and are one of the most common choices for carports and metal garages for sale. Concrete is also fire and termite-resistant, making it a long-lasting and reliable option.
Mixing your own concrete can save you money initially and allows for mix customization. However, it requires more labor and can vary in quality. On the other hand, ready mix offers convenience, consistent quality, and saves time, though it's typically more expensive, especially for small projects.
A concrete garage floor should be at least four to six inches thick for most residential properties.
A 24x30 garage (720 sq. ft.) is designed to comfortably fit two large vehicles side by side. It offers plenty of extra space (about 5 to 6 feet per car) for opening doors, walking around, and adding a workbench or storage in the back.
A “functionally adequate” garage in a typical market might add $5,000 to $25,000 worth of value, says Mike Ford, a Southern California-based general certified real estate appraiser since 1986. In high-end markets, the value might be higher.
One of the biggest mistakes people make when building a garage is failing to plan; underestimating the complexities involved with building a garage can lead to delays, higher costs, and frustration.
As stated above, post-frame construction is one of the most cost-effective building methods for garages. Although you can probably find garage kits at similar prices, they don't always provide the quality and customizable properties you need.
A well-executed garage conversion can boost your home's resale value by as much as 10-20%, depending on the local housing market and the quality of the renovation. Factors such as insulation, flooring, lighting, and heating/cooling systems play a crucial role in determining how much a garage is worth post-conversion.
Planning Permission
A 20x20 foot garage is generally the bare minimum for a two-car setup. While it easily fits two standard compact cars or sedans, it leaves virtually zero room for storage, tools, or walking around the vehicles. Full-size trucks or SUVs will likely be a very tight squeeze.
Coca-Cola does three main things to concrete: it slows down the curing process (acts as a retarder), etches the surface to expose decorative aggregate, and removes tough stains. This happens because of the soda's high sugar content and phosphoric acid.
Choose rebar for thicker slabs, heavy loads, or commercial projects where strength and durability matter most. Concrete is strong in compression but weak in tension. Without reinforcement, it can crack and lose its structural integrity over time.
Yes, 4 inches of concrete is generally thick enough for a residential driveway. It is the long-standing industry standard meant to support standard passenger vehicles and light SUVs. However, the longevity of a 4-inch slab depends heavily on proper installation, base preparation, and intended use.
Water is the most common enemy of concrete surfaces. When water penetrates the surface of concrete, it can cause it to crack and weaken. This is especially true in colder climates where water can freeze and expand, creating even more damage.
This is why it's essential to choose the right time of year for your pour - if possible. Generally milder weather - such as spring and early autumn tend to be optimum times when installing concrete. Avoiding weather extremes - such as hot or very cold conditions are best avoided.
Is Quikrete as strong as concrete? Yes, Quikrete concrete mixes are designed to be as strong as regular ready-mix concrete.