How to Convert a Double Garage into a Granny Flat or Apartment

One of the best ways to increase the living space in your home is to convert a double garage into a granny flat or apartment.

Our builders can help with:

  • Single / double garage Conversion
  • Upgrading garage roof
  • Garage structural changes
  • Conversion to granny flat or apartment

Areas Include Pretoria East, Moreleta Park, Montana, Doornpoort, Brooklyn, Tierpoort, Garsfontein, Waterkloof, Raslouw, Irene, Midstream, Centurion, Wapadrand, Mooikloof, Roodeplaat.

CLICK HERE for a FREE Quote on Garage / Granny Flat Conversions

converting a detached garage into a granny flat

So long as it has a foundation, it is possible to turn a single or double garage into one of the most important rooms in your house. The following are the key tips on converting a detached garage into a granny flat.

Planning Approval

No matter your location, any changes you make on your house must be approved by the local authorities. You might have to hire a designer or architectural draughtsman to help you come up with plans to submit to the authorities.

For minor changes like flooring, minimal alterations, and re-plastering may not require any permits.


Come up with a budget, according to your plans. This should include the cost of materials and labor. It is only when you are sure you can afford it that you can continue with the project.

Otherwise, it might not be possible to pull off a double garage conversion.

Getting Rid of the Garage Door

Most garages come with automatic doors with unique operation mechanisms made of springs. So as to effectively remove the spring, care should be taken not to interfere with the built-up tension.

For this task, you may have to hire a garage door technician. After removing the door, you will have to construct a new wall to convert the double garage into an apartment.

Electrical and Plumbing Installation

convert garage into apartment

In a garage, there might not be enough electrical fixtures and pipes. Now that you are converting it into a granny flat or apartment, you will have to install all of these things.

A qualified electrician can help you with the installation of additional power sockets or lights. Also, you should ask a plumber to install water pipes and drainage systems.

After all, turning a double garage into a granny flat involves making it as livable as possible.

Upgrading the Roof

double garage conversion

To make the garage roof waterproof, you may have to upgrade it. If it is still structurally sound, minor changes to the roof are enough.

However, a completely damaged roof may require a total overhaul. As part of converting a detached garage into a granny flat, you may want to install a roof that maintains or enhances the original design.

Structural Changes

To convert double garage into a 2-bedroom granny flat, you may have to undertake minimal structural changes. This may include adding walls, resurfacing the floor, replacing or adding a window, as well as plaster finish.

All of these go into making the garage a livable space. Once it is ready, you may start living in it immediately.

Garage Conversion Videos

As you can see, it is easy to convert a garage into an apartment. It is easier and cheaper than having to construct a new structure from scratch. All you may have to do is install a sliding door or a new wall. Ask an expert in Pretoria to help you with the work to ensure it is of the highest quality.

CLICK HERE for a FREE Quote on Garage / Granny Flat Conversions