How Much Does It Cost To Build A Second Story Above A Garage?

by | Last updated on January 24, 2024

, , , ,

For example, adding a second floor bonus room above a garage might cost

around $50,000

, while a full second-story addition might cost over $200,000. Here are some ballpark figures to consider: A full second story for a house measuring 2000 square feet will cost between $150,000 to $200,000.

Can I build a room above my garage?

A room above a garage might prove the perfect tonic for a house with a small lot and a need for additional rooms. Be sure to

check your local building codes and zoning ordinances

before starting a project. You’ll save on some of the construction because there will be a foundation already in place with the garage.

How much does it cost to build above a garage?

Adding a bonus room over your garage runs around $115 per square foot. Overall, you can expect to pay

about $45,000 on average

for this project. You may need to make structural changes to the existing garage to support the bonus room, which will also increase the price.

How much does it cost to build a loft over a garage?

A loft conversion costs

$7,000 to $67,600

, averaging about $20,000. This translates into a price of $50 to $150 per square foot.

How much does it cost to build a room over the garage UK?

An over the garage extension will normally cost

between £18,000 to £30,000

to build, depending on whether it’s of a single or double size. You may have to build a new garage, perhaps because you need firmer foundations to accommodate your extension plans – if so then there are a number of extra costs involved.

Is it cheaper to build out or up?


Building up is always the least expensive option

for increasing your home’s square-footage because it requires less material and labor. … On the other hand, if you build out, you’ll have to add footers, concrete, fill rock, roof system, and more excavation cost.

Do you need planning permission to build above a garage?

Under permitted development guidelines

there is no allowance for an extension over a garage

. As such, you will require planning permission. However, each Local Authority will have a ‘House Extension Design Guide’ which outlines the criteria under which this would be considered acceptable.

How much does it cost to build a garage with a master bedroom?

Adding A Bedroom Over the Garage

A 2013 report by CNN estimates the cost of a new master suite installed over the garage at

$50,000 to $80,000

, which is well below the national average cost of adding a master suite over a crawl space.

How can I extend my house cheaply?

  1. Stick to a simple configuration. …
  2. Use simple building materials. …
  3. Plan in standard fittings. …
  4. Don’t be lured by fashionable brands. …
  5. Keep the groundworks simple. …
  6. Party Walls. …
  7. Planning Permission.

Can my garage support a second story?

Most attached garages are constructed with a

framed or block wall

, both of which are strong enough to support a second-story room above them. … A small bump-out can provide room for a small closet or storage shelves. This might be a good time replace your garage door.

How easy is it to build over a garage?

Building over an existing garage can be

a great way to gain an extra bedroom or master suite

, a study or guest bedroom. Whether the garage is attached to the house or detached does not affect whether you can extend above it. … Also, the foundations on some garages may not be large enough for additional floors.

How much can I extend my garage without planning permission?

You can build a garage or outbuilding on your property without planning permission as long as it’s of a reasonable size –

no higher than 4 metres

. Do bear in mind though that outbuildings cannot take up more than half of the land around the original property.

Can you build on top of a single brick garage?

Its very unlikely that unless they are

1m deep you wont be able to build on top

. If the foundations are ok, and bco are satisfied, then you would need a structural engineer to design steels, and maybe extra piers. Whichever route you take, you will need a S/E planning and building regs.

Is it cheaper to build vertical or horizontal?


Generally it is cheaper to build up than out

, however factors that can cost more in some vertical cases can be expanded elevator shafts and more complicated HVAC systems when building up.

How much does it cost to pop the top of a house?

It’s the number one question clients want to know, and although every project is different, there are some good guidelines given , starting at, you can count on a pop top being

around $175.00 a square foot

, as well as ground floor additions. Basements can run from $40.00 to $70.00 a square foot depending on the design.

David Martineau
Author
David Martineau
David is an interior designer and home improvement expert. With a degree in architecture, David has worked on various renovation projects and has written for several home and garden publications. David's expertise in decorating, renovation, and repair will help you create your dream home.