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Old 08-06-2009, 01:32 PM   #1
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Garage Foundation


If we convert our single car garage to a bedroom/bath can we build on the existing slab? We'll have to build a new floor to allow for plumbing and a level floor.

Secondly, does the garage need a foundation or will the current slab (which looks to be in good condition..a couple cracks on the exterior, but nothing on the interior) work for the space?

Finally, what is the best way and easiest way to determine if the current garage has a foudation?

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Old 08-06-2009, 03:06 PM   #2
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Garage Foundation


Quote:
Originally Posted by cibula11 View Post
If we convert our single car garage to a bedroom/bath can we build on the existing slab? We'll have to build a new floor to allow for plumbing and a level floor.

I've worked on a few remodels were this was done.

Secondly, does the garage need a foundation or will the current slab (which looks to be in good condition..a couple cracks on the exterior, but nothing on the interior) work for the space?

If the garage is currently attached to the house, it should already be on a similar foundation as the house. Obviuosly, this needs to be verified.

Finally, what is the best way and easiest way to determine if the current garage has a foudation?
The best & easisest way is also the only way I know of: grab a shovel.

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Old 08-07-2009, 07:45 PM   #3
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Garage Foundation


That's kind of what I figured. Thanks. I think the house and garage are the same age, so I would think it has a solid footing. I guess I'll get my shovel
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Old 08-07-2009, 10:34 PM   #4
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Garage Foundation


Converting a garage into livable space is something you should work with your building department and pull a permit. Some areas are very strict on garage coversions.

Not saying it can't be done - but it should be done properly to ensure you don't have problems down the road with unpermitted work, being able to claim the square footage when you sell, etc.
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Old 08-08-2009, 11:10 AM   #5
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Garage Foundation


I'm well aware of my need to contact local building dept. I know for a fact that converting a garage is not an issue where I live because there are several houses with in a few blocks that have done this. Two of them are currently on the market. You can tell that these conversions have been done by professionals.

I just wanted to know if given there is no footing or foundation like the house, if a conversion can still be done.
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Old 08-08-2009, 01:36 PM   #6
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Garage Foundation


Probably not or maybe. . All walls need footings to transfer the loads down to the earth. Your local B.D. would tell you if the slab area between garage jambs needs one or not. Be sure to contact your Insurance Company at permit time to be covered for any unforeseen problems. This is not the answer you want but it is entirely a local thing, how they interpret the minimum safety code. I did one and had to engineer the front header opening wall, pour a footing and short wall (pinned to the side foundation stem walls), with special shear wall nailing on the wood wall above. I left the slab under the new floor joists with a bearing footing cut into it for support. Heat source, egress window, light and ventilation, etc. are also required. Bottom line, we don't know. Be safe, G

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