Addition -- kit out main floor bedroom

I drew in a bathroom & a closet in the north room on the main floor:

Yes, the bathroom has a sliding door to the "inside" deck, why do you ask? :-)

However, what looks like an opening from the closet to the deck is just the software being weird. Also, the opening from the room into the closet should be centered on that wall, another bug. I think I may leave it as an opening though & put up a curtain rather than a door.

Addition version of 18 Apr 10

I decided it makes more sense to put the ground floor bathroom in the bedroom (now called a bedroom) instead of in the hallway.  This has the advantage of allowing the floor levels to adjust without messing up the bathroom design.  It means the stairs need to be modified, which I have not yet drawn in.

Addition drawing 1

Here are some initial drawings for the addition.

Ground floor

The as built is supposed to be outlined in blue, but it seems to not be strong enough. The area labeled "As built basement" is the existing part. Down is towards the street (west).

The area labeled "ledge" is an offset in case I can't dig right next to the house. The basement height is about 6 feet (to the beams), but the lower level addition height should be about 8 feet. Since I am putting a bathroom in the hallway, I am assuming the bathroom height should be 8'. I'm not sure I can go down 2' right next to the house, so I put in a 2' offset. This may change, e.g. I may move the bathroom into the room & make the hallway narrower, or the bathroom could be shorter or perhaps the ground height can be lower.

The room may be a bedroom at some point, but I didn't label it as such.

The stairs go into a hallway which is in what is now the side yard. There is a door to the garage, but it got lost somewhere. It will come back. The odd red marks are because the software puts openings in walls if there are openings in the walls above, which is strange & annoying.

Main floor

The part labeled "Inside deck" is the roof of the hallway below. It is open to the sky, except for perhaps a transparent roof, which is not required to be watertight (thus, the watertight requirement is on the deck surface). There wasn't comfortable room to put a door from the hallway to the deck, so I left it out. When I modify the existing house, I will (perhaps) put a sliding door from the kitchen to this area also. The hallway portion comes a ways down towards the front of the house so the door to the kitchen & the back door don't collide.

I will probably use the room to the left as a bedroom.

Top floor

The as built part is the current dormers, etc, which don't touch the new part. The part labeled "Deck" is the roof of the main part of the addition. The part labeled "Tower" is the stairs up to the deck, stacked with the stairs to the basement. The area between is designed to give a place for the roof of the main floor hallway to slide under the existing roofline. The existing roofline doesn't follow the blue line (the inside walls), but the contour of the lower floor, so there is less space between the tower and the roof than it appears.

The house I have

I am planning to add on to the house I have. I decided to do a reasonably good plan of the house I have (in x/y, not so much in z). Here are the drawings:

The existing house is 32 feet from front to back (not including the porch) and 24 feet wide. Thus, the footprint of the house itself is 768 ft^2. The max allowable coverage for the lot is 30%, which comes to 2160 ft^2. The porch is 6' deep (or so) * 24' wide, so it adds 144 ft^2, thus the existing house uses up 912 ft^2, leaving 1248 for the addition. My thought is to add on 1200 ft^2 -- 30' deep by 40ft wide. Add a back porch & it is all used up.

Basement level. This is ground height in the back, underground in the front. It's just one room, with crawl space under the front. I forgot to put in the door in this drawing, and decided not to put in the (pitiful) windows, so it's even more boring than in real life. All the things that look like windows, etc, are from the floor above. For some reason, the program put them in. It is 24 feet across & 14.5 feet from the back of the house to the wall.

The main level: The thing that looks like a room without doors near the back is the staircase. The smaller thing that looks like a tiny closet is the chimney. The small room in the back is the bathroom, the big room in the back is the kitchen. I am using the big room in the front as my bedroom, eventually I plan for it to become the dining room.

The upstairs. The room without doors is the staircase again. The areas that come off the side of the hallway at the back & the room at the front range in height from about 4.5' to 2.5' -- the area under the eves, I guess you could call it. The areas at the front, side & back, with windows, are dormers.