In the United States, a significant majority of homes and condos—about 80%—come with a garage or carport. However, these spaces are typically designed to fit only one car, leading many homeowners to consider expanding their garage. For others, making up the remaining 20%, building an entirely new garage might be the preferred option.
Before you begin a garage addition project, you should determine the type of garage you want to add, understand the associated costs, and know what permits you’ll need for construction.
This article will guide you through these considerations, helping you make informed decisions for your garage expansion.
What is a Garage Addition?
A garage addition involves expanding your home to create extra space, either by adding a new garage or enlarging an existing one. This space can serve different purposes like parking more vehicles, storage, or creating a workshop.
Design considerations include siding, roofing, and layout. It’s important to think about security, insulation, and ventilation for durability and functionality.
Plumbing, foundation, and walls are also key aspects. This project can enhance the utility and lifestyle of your home, providing additional living space or specialized work areas like workshops.
Types of Garage Additions
Attached garage additions are connected directly to your house, often sharing one or more walls. They provide convenient access to your home and can be used for extra storage space or parking vehicles.
Detached garages stand alone on your property, separate from your house. They are ideal for creating home offices, guest rooms, or extensive storage solutions without disturbing your main living space.
A garage extension simply enlarges your existing garage, allowing for more vehicles or additional storage space.
Adding an extra level above your garage can give you even more room, perfect for an office or guest room.
Garage Addition Costs
The cost of adding a garage varies considerably based on the type and scale of the project.
For an attached garage, you might spend between $10,000 and $43,000, with the national average around $26,000.
If you’re considering a detached garage, prices can range from a basic prefab model at $1,500 to a custom structure with living space for upwards of $50,000.
A garage extension generally costs between $5,000 and $30,000, depending on the square footage and materials like brick or stone used.
Building an addition over the garage can be expensive, averaging between $60,000 and $200,000, which equates to about $150 to $500 per square foot.
It’s essential to account for labor costs and building materials, and consider financing options to manage the expenses better.
Besides increasing your home’s curb appeal, these upgrades can significantly impact its value.
How to Plan a Garage Addition
Step 1: Identify Your Garage Needs
Begin by deciding on the type of garage you want and how many vehicle spaces you need. This decision should align with your budget and space requirements.
Note that whether the garage is attached or detached will impact the overall cost.
Step 2: Evaluate Garage Accessibility
Consider the accessibility of the garage and how its size, orientation, and shape will influence the existing driveway.
You might need to modify or replace the driveway to ensure a smooth traffic flow and easy access.
Step 3: Check Local Zoning Regulations
Familiarize yourself with local zoning laws, ordinances, and requirements for constructing a garage.
If you hire a contractor, they will help you understand these regulations and obtain the necessary permits and inspections to ensure compliance.
Step 4: Acquire a Site Plan
A site plan provides an aerial view of your property, showing boundaries and features. This helps visualize where the garage will be placed.
Local governments often require site plans for building and zoning permits, so ensure you have an accurate one ready for permit applications.
Step 5: Consider an Above-Garage Addition
Think about whether you want to add an Accessory Dwelling Unit (ADU) above the garage.
Even if you don’t plan to include it in the initial build, consider preparing the necessary hookups for future use.
Check local zoning laws to make sure ADUs are permitted on your property and prepare floor plans for permits if you decide to go ahead with the addition.
Order your garage addition plans
A garage addition increases storage, living space, and can improve curb appeal. You need to consider zoning, design, and costs to achieve the garage you need.
Submit a permit application to start. You’ll require a detailed site plan, which you can get from MySitePlan in less than a day.
Speed and accuracy in planning are key to your project’s success.
Garage Addition FAQs
Does a Garage Boost Your Home’s Value?
Adding a garage can provide extra space for projects, serving as a workshop or a personal retreat. It also offers potential to increase your home’s value when you decide to sell.
How Much Value Can a Garage Addition Bring?
Typically, a garage can add between $5,000 and $25,000 to your property value. Custom features or additional living spaces can also boost this value, though exact figures may vary.
Consider consulting an appraiser to get an estimate specific to your design.
Ensuring Compliance with Local Building Codes
It’s crucial to work with a reputable contractor who’s familiar with local building codes and permit processes.
This usually involves creating detailed plans, obtaining the necessary permits, and scheduling inspections during and after the construction.
Deciding Between an Attached or Detached Garage
Your choice depends on your needs and property layout. Think about the cost, available space, and how the garage’s placement might affect existing structures and accessibility.
Determining the Best Location for Your Garage
When choosing a location, consider the garage’s accessibility from the main road and its impact on the existing driveway.
If you’re adding an attached garage, think about its proximity to your home. Also, check for any utility lines or septic systems that might impact placement.
Steps to Obtain a Building Permit
To get a permit, you’ll generally need to submit a detailed site plan showing compliance with local zoning laws.
This might include a review by local authorities. Consult a contractor or local government office for specific requirements in your area.
Finding Zoning Restrictions in Your Area
Zoning information can typically be found at your local city building office or online through your local government’s website.
Working with a local contractor knowledgeable about these regulations can provide additional guidance.
What to Include in Your Budget
Your budget should account for materials, labor, design, possible demolition, site preparation, and any additional features like electrical and plumbing.
Don’t forget to include potential costs for altering the driveway or landscaping.
Building a Garage on Uneven Ground
It’s possible to build on a slope or uneven ground, but you may need additional groundwork and engineering to ensure stability and compliance with building codes.
Consulting an architect or builder with experience in such projects is advisable.