From the post it reads like you are adding on a room...If this is the case, make sure you check your boundries for encroachment.
I added on a room and had a contractor that used a draw system. He estimated the cost and I put that money in an escrow account. I had to authorize payments be sent to him as he needed money.
I live in an association and needed approval for a room addition. (It had to match the rest of the house to make it look like the house was origonally built that way) I had to get plans drawn up (the contractor sent someone) and submit them to the association to keep on record.
Once the paperwork was signed the work went very quickly...All of the jobs that needed to be done were by subcontracted crews that were doing after hours side jobs...
The foundation was probably the biggest job in that they dug a 6 foot deep ditch around the outside of the foundation and put in re-bar before the poor (too keep it from moving). Once that was poored it was about a month before anyone showed up to do anymore work.
I had to wait for a city guy to come out and sign of on the permit for encroachment on the property line....The measuring is not like I imagined...Origonally I thought ok you can be x number of feet from the back fence, so I measured from the back of the house...In actuality the measurement is taken from somewhere out in the street to a point in the back yard. It may not even be the middle of the street...There are survey disks in the intersection at the end of the street. You have to go in a straight line from one end of the street to the other and that line is where you measure from...In some cases if your street curves. you may lose or gain some distance...I had told the contractor that I needed a minmum of 16 feet wide on the room...All I will tell you is that my room is 16 feet wide and I have the sign off permit on record..(and a copy)
The roof was premanufactured trusses that were delivered (they have to be inspected and signed off also)
Once the framing started things went rather quickly with no problems at all.
A couple hindsight things to thnk about.
- Get the best insulation you can get if you are going to have three sides exposed
- Get all your wiring, cable etc installed before hand if you are going with vaulted ceilings
- Add a return air duct for the A/C
I burned up the origonal A/C by not adding a return air duct. The unit was just working too hard for the extra square feet.
When I had a new (bigger) A/C installed I had them add a return air duct that helped the room addition a lot. They almost could not add the return duct because vaulted cieling leave very litte room for attic acess. They found a real little guy that was able to crawl back there and get the ductwork in place in the attic. (He was a mess when he came out)
Same with the cable and any stereo wires.
This was done back in Phoenix in about the year 2000, but he may not be retired yet. If you want his number, PM me and I will look it up.