Garage Plans: Attached Vs. Detached Garages – Some Prior Considerations

An Attached Garage vs Detached Garage

An Attached Garage vs Detached Garage

Bet that you ever found snow, frost, dew, or other debris on your car before kicking your morning routines or adventures. You need to clean it repeatedly every single day. It is the time when you’re aware the real value of having garage to your home living.

The main purpose is indeed for protecting your vehicle(s), yet you still can get bonus like additional storage, extra work space, or even probably a convenient man cave. The question is whether to attach that new garage to the main house or build it from the scratch as a detached structure or not.

Before arriving to your decisive garage plans, there are several useful information for your prior considerations: construction, budget, design, enlargement, noise, comfort, health endangerment, security and insurance, up to resale value.


Before determining the type of garage you want to build, it’s always better to check your local zoning requirements. One of the reasons is that attaching a garage to your existing home may require more pricey and harder-to-acquire building legal permission than for a stand-alone construction. Also, you need to check if there any homeowner association (HOA) or other regulations. As an example, you may find size restrictions to your garage plans. HOA perhaps may rule that you must pick attached garage or any addition design should be similar to the main home itself.

Whether attached or detached, this project is indeed best handled by a professional contractor. In this case, you can ask for references and check for correct licensing and insurance prior to using service from anyone. For instance, it’s better to look for at least three quotes for comparison and get the best value for your money.

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For several reasons, the attached garage is said as the less expensive type. First, the builders are going to save money by making use the home’s walls for part of the structure, reducing cost on the material and labor. Second, installing electricity into the addition can be cheaper for you’re merely expanding your home’s existing electrical system. And finally, any ventilation or HVAC can also extend from the home. As for a detached garage, electricity, ventilation, and HVAC need to use separate sources.


Some factors that have high impact on your costs for constructing either type of garage are building and siding materials, extra windows and doors, ventilation type, option of climate control, and built-in 1 storage systems.


Expansion occurs as when you need change and your family grows. With the appropriate permits and permissions your detached garage can grow as well. Although not impossible, expanding an attached garage is much more difficult due to its design that is tied to the main house’s architecture. And obtaining a permit for expansion will be a more challenging and more expensive attempt.

House with Detached Garage and Breezeway

House with Detached Garage and Breezeway


Lot space is said as the one difficulty in designing and constructing an attached garage. For example, on a narrow lot, an attached garage tends to cut off access to the backyard. Detached garages suit these lots better, yet they do swallow up valuable space.

However, detached garage has its own benefits. You can make a deck or patio on its roof. Or else, adding a second floor for a guest room or man cave can be another possible design element. You will only need less cost compared to adding to an attached unit because you won’t have to argue with the home’s existing roofline. Another plus for having a detached garage is the increased curb appeal for your property. This is particularly for a smaller house which may be overshadowed by a two- or three-car garage addition. Also, a floor plan without an attached garage provide more window views and landscaping space.

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When you have your garage as a workspace, a detached garage will avoid the sounds of machinery which likely disturbing the rest of the home’s occupants.


An attached garage can offer the biggest advantage relating to convenience. The luxury of being able to enter and exit the home from the garage is peculiarly comfortable during the climates with heavy weather conditions or extreme temperatures. As an example, in cold-temperate climates, carrying heavy packages from the car to the house is easier with an attached garage.

An Attached Garage

An Attached Garage

Health Endangerment

You also need to consider about health risks. The American Lung Association reminds homeowners to provide sufficient ventilation system in an attached garage, particularly if you use or store chemicals. Also, remember not to idling cars because even the time spent backing out and parking can leave toxic and unpleasant exhaust which may go into the home.

Security and Insurance

A garage attached to your house may result in a security threat. An intruder in your garage will also has the privacy to enter the home through the attached door. Always make sure that this door is as secure as any exterior door. If used as a workspace, the danger of fire can be a jeopardy, especially when you use flammable items. On the contrary, you can reduce the danger of fire by adding a space between a detached garage and the main house.

Before drawing a final decision, get the information about the effect on an insurance policy for the two types of garages by speaking to your insurance agent or an appraiser.

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Resale Value

An attached or detached garage each can increase or cut down the value of your property. This will rely on two factors, namely the curb appeal and consistency with other homes. An attached garage that faces the front can trim down the look of the house, particularly when you have a small house. A detached garage in the middle of a neighborhood dominated by homes with attached garages tends to reduce the home’s value. The climate, of course, plays an important role as well. Not having a garage, specially an attached one, will be a deal breaker during a very hot, cold, or wet climates.

Nevertheless, when all is well thought out, real estate professionals make an estimation in 2012 that a two-car garage, attached or detached, will add roughly $30,000 to the value of a home, and a one-car garage will add more or less $15,000 to $20,000.

Some other considerations that raise the resale value are an electric door opener, an opening that does not face the street, and additional storage space.​​

Single Car Carport

Single Car Carport

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