Cost to increase the height of our ceilings and roof?

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Posted by: from Carlisle
7/14/2014 at 12:34:33 PM


My family and I have a home back-split home in Ancaster/Hamilton and wanted to increase the ceiling height of around 1400 sq/ft of living space from 8 feet to at least 10 feet and maybe more.

We really want to increase the height of the ceiling to open up the space and bring more light into our kitchen, living room and master bedroom - all of which are on the main floor and with only the attic and roof above.

Besides the framing, drywall, painting and trim work, I'm guessing the windows will need to be replaced in these areas. I can't see any need for plumbing or electrical work.

Below is a very crude drawing of what our house looks like. The all black is the current structure and the the red lines indicate the areas we want to extend the ceiling and roof.

We REALLY want to get this done and want to know what we need to budget to complete this project. Any rough estimates or cost per sq/ft estimates would be appreciated!

Cost to increase the height of our ceilings and roof?
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Date/Time7/14/2014 at 1:36:12 PM

Hi Peter,

It sounds like you have some interesting times in your future. I think you are underestimating the complexity of a project like this. You need to start your journey with an architect to design your vision, then an engineer to tell you how to hold it up. Probably need a whole new set of roof trusses to tie it all together properly. You will need to bring everything you touch up to current building codes including the electrical, insulation, HVAC, plumbing, etc.

It is not as easy as jacking up the ceiling and filling in the gap like your request makes it sound.

Once you get the plans from the architect and engineer, you can put it out for bids. That is the only way to get an accurate number.

This is out of my league but my guesstimate would be 200K +.

There are some great contractors on here that can probably give you a more accurate estimate, I am sure they will chime in to help.

Good luck with it !

Jim Kuzma

Kettleby Handyman

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Max in Carlisle
Date/Time7/14/2014 at 2:05:03 PM

Hi Jim,

I assumed it would be a big undertaking but didn't think it would be around $200K.

I found some information online that listed a complete second story addition around $150K - $250K but this included a completely new level with added sq/footage, rooms, bathroom etc. I just assumed raising the roof would be considerably less expensive.

At this point we're just looking for rough estimates and advice so that we can take the next step in properly planning this project i.e. reaching out to local architects, engineers, builders etc.

Thanks for your response.

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Max in Carlisle
Date/Time7/15/2014 at 9:13:31 AM

Is there a big cost difference between completely lifting the roof/ceiling or modifying the roof by adding vaulted ceilings with or without "collar ties"?

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Date/Time7/15/2014 at 3:31:28 PM

Hi Peter,

I strongly suggest you meet with an architect and the engineer he or she works with to get a feel for what is involved in your project. As the previous post mentioned, there is a lot more involved than simply lifting the roof and building up the walls..

If it was my home. I would remove the existing roof structure. Build the exterior walls out with new 2"x6" beside each existing wall stud. this of course means re wiring and re plumbing the walls. And re insulating, vapour barrier etc the exterior walls. At this point, if you wanted to change the floor layout in any way, go ahead with it now.

Then install all the new roof trusses the architectural plans call for. To answer your question regarding a flat ceiling or vaulting, at this point the cost is very similar. You are replacing and re building everything that has to do with the ceiling and roof structure.

This is a costly project without a doubt.

But if the area you live in will justify the expense, why not enjoy.


James Fram

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