When it comes to building a new garage, one of the most important decisions you’ll make is choosing the right size. Whether you’re building from scratch or replacing an outdated structure, determining the appropriate dimensions starts with two essential questions:

  1. How many vehicles do you plan to store?
  2. How much additional storage space do you need?

Let’s break it down to help you find the ideal garage size for your lifestyle, budget, and future needs.

When designing your garage, don’t just think about how many vehicles you currently own.

Each standard garage size is designed with a general layout in mind, but these can (and should) be customized based on your specific needs.

1-Car Garage (Approx. 12’x20’ to 14’x24’)

Ideal for:

  • Homeowners with a single vehicle
  • Smaller lots or tight spaces
  • Limited storage needs

A one-car garage can hold a car and a few essentials like lawn tools or bikes, but space will be limited. The design process should include where organizational tools may be needed to maximize the space efficiently.

If you have a larger vehicle (like a truck or SUV) or plan to use the garage for a workbench or seasonal storage, you’ll want to consider building the structure longer or wider.

2-Car Garage (Approx. 20’x20’ to 24’x24’ or more)

Ideal for:

  • Two vehicles
  • Moderate storage or workspace
  • Growing families or households with multiple drivers

A 2-car garage is one of the most common choices because of its versatility. It allows for two cars plus basic storage. Want space for yard tools, bikes, or a snowblower? You might want to extend the depth to 26′ or even add a bump-out, adding a few extra feet in depth or width now can save you the hassle and cost of a future remodel.

3-Car Garage (Approx. 30’x20’ to 36’x24’ and up)

Ideal for:

  • Larger families or multiple drivers
  • Extra storage or workspace
  • Classic car enthusiasts or hobbyists

A three-car garage provides much more flexibility. You can store two cars comfortably and use the third bay for storage, a workshop, or recreational vehicles. If you’re already thinking about how your needs might grow—this is a smart long-term investment.

Think Vertically

Adding loft space or attic trusses can dramatically increase your storage potential without expanding your garage footprint. If zoning allows, building a taller garage with attic storage can keep clutter off the floor and give you more usable space.

Choosing the right garage size isn’t just about how many cars you drive, it’s about building a space that fits your lifestyle. Take time to consider how you’ll use the garage today and five or ten years from now.

At Heartland Garage Builders, we help homeowners throughout Chicagoland customize garages that check every box—vehicles, storage, function, and style.

For a FREE consultation and estimate, contact Heartland Garage Builders at HeartlandGarageBuilders.com or 224-326-2698.