Background: I have a 6yr old new construction home. A small deck (roughly 9x9 if you exclude the stair cut out) was built just to come out from the kitchen. The house has a garden view basement, because the house is built on a slope.
Objective: I'd like to extend the width of this deck about 16-17ft, and basically keep the old deck, minus the railing at the side I will be extending.
Currently the deck is connected to the house by a ledger board, and then the front uses slotted 6x6 posts to support the rim joist.
What would be the best way to extend the rim joist into the new deck? I haven't built a deck before, but I would like to tackle the job myself. I do plan on submitting a permit and plans next week to my city's building department.
I was tossing around some ideas: Should I put another 6x6 as close as possible and have the extending rim joist cantilever a foot or so to the old deck? Should I try and cut back the old rim joist to where I can seat the two (new and old) together on the original 6x6 post and extending from there? Or can I just somehow attach the extending rim joist to the end of the original deck (the band joist)?
Here is a picture of the original deck when it was first built to get an idea of what I'm working with.