A full bath requires a minimum of 36 to 40 sq. ft. The finished room must measure at least 5 ft. in one direction to accommodate a tub. Building codes typically require 32x32 in. (finished dimensions) for a shower; if you have the space, larger is better. Just make sure the shower is large enough so you can comfortably raise your arms and bend over in the space.
Interior bathroom demolition costs $1,000 to $2,300. Prices can go higher if you’re removing and moving walls to create a different footprint. For the experienced DIYer, this is a good place to save money by doing it yourself or assisting the contractor. However, demo can get expensive quickly if you take out a load bearing wall, cut electrical lines or break a water pipe. Avoid the risk by hiring a pro.
The tank is concealed within a 2×6 wall that’s built in front of the existing plumbing wall. It does require some plumbing rerouting because the waste line runs through the wall instead of the basic floor-mounted toilet flange (see Photos 8 – 12). The toilet can be ordered with a wall-mounted access panel/flush button like ours or with the panel mounted on top of a half wall. A ‘chair carrier’ (Photo 11) comes with the toilet. This steel framework contains the toilet and operating mechanisms and is designed to support the weight of the toilet.
The special-order fixtures, fittings, shower pan, tile and glass block panel can take weeks to get in hand, so do the necessary legwork and ordering well in advance. Before gutting the bathroom, check to make sure that there are shutoffs for all the fixtures or a master shutoff for the entire bathroom. If not, buy ball valve shutoffs sized to fit your pipes. Then turn off the main water supply line where it comes into the house from outside, cut the pipes feeding the bathroom and install the new shutoffs right away (see Photo 7).