I'd like to add a smaller bathroom to Room 2. The cool thing is that our house is on a raised foundation and the crawl space access is right outside Room 1. I'm thinking this is as straightforward as adding T's to the copper water supplies, drain pipes, and drain vents as far as plumbing is concerned, and then making two walls to close off the bathroom in Room 2? I'm considering paying a plumber for a days work to get the plumbing done, same with electrician. But I definitely want to do the framing and dry-walling myself (so i can learn this stuff). I watched this and this seems very straighforward: www.youtube.com/watch?v=2VwXv3x_5k8
Please give me some advice as for how to move forward. This forum has always been a great help. Another question is.. do I want to get a permit? Is it worth the hassle? we own the house and dont plan on selling for a while. Does permit increase the annaul tax? I'm in Torrance, CA. Thanks again all! looking forward to reading the advices.