Cantilever or post, beam and pad a bumpout

Question Icon
Posted by: from Nanaimo
6/4/2011 at 4:02:00 AM


We are in the process of planning a renovation to a house we just bought. We plan to kick out a portion of our back wall 19' x 3'.

The joists go in the direction of the new kickout. Originally we had planned to tie into the current joists and cantilever the addition.

Upon further discussion the thought of pouring 3 pads with posts and beams to take the new renovation loads and tie it into the current foundation wall.

Does anyone have some insight (pro's/con's) to either method? The cantilever method requires a little more electrical work to pull wire from the panel so we can tie the joists in.

Thanks in advance.

User Icon
Date/Time6/16/2011 at 12:41:22 PM


Save yourself a lot of trouble.

Get some engineering done and submit for a building permit.

It would not be ideal if the local authorities ordered you to tear down all the new work, because you didn't get a permit.



User Icon
Date/Time8/17/2011 at 6:30:04 PM

Hi Shawn,

I agree completely about the engineering and permits. Cantilevering floor joists require a lot of work to tie back into the existing floor structure in order to make it safe. Concrete pads, posts and beams are the same. With moisture concerns on the Island, protecting from water penetration is vital to say nothing of the requirements for fastening the new structure to the existing framing.

With that said, I have just moved away from Nanaimo and can recommend some reputable contractors that are more than capable of assisting you with your project if you're interested.

Send me an email at and I'll be happy to send you their names.

Kelly Dickinson

Dickinson Contracting

Penticton, B.C.

Search the TrustedPros directory and discover the best contractors in your area.

Find your home service pro
Great renovations start with a great contractor.

Since 2004, TrustedPros has been helping homeowners find the right contractor for their home improvements and repairs.

Post Your Project

Within hours you'll be comparing offers from top-rated professionals. It's free to post and you're under no obligation to hire.

Trustedpros Inc. does not warrant the accuracy, completeness, safety, legality or usefulness of any Content, or Whether Content is Current and up-to-date, and TrustedPros Inc. Shall have no liability whatsoever with respect to your use or reliance upon any content or for content being removed or otherwise ceasing to be available. Please refer to the terms and conditions of use of this websites for more details.

It appears you may be located in the US

TrustedPros is designed to deliver results targeted to your location.

Get Free Estimates

Post your project and compare offers from top-rated pros.