Jennifer Gilmer did my cousin's kitchen and bath. Beautiful work. 1950's small house with even smaller spaces with every inch made useful. Be sure you know what your budget is going into the project. You live in a very expensive metro area and want some very expensive changes. Are you prepared to spend as much on this bath as the average kitchen redo? (50K) Here is a link that might be useful: Jennifer GIlmer on Houzz

We are building a house in Montgomery, not too far from the Woodlands. Our slab was poured last week, and they did a very good job. I don't know the name of the company, but the contractor's truck had www.gotconcrete.com on it. Here is a link that might be useful: concrete contractor

Try www.homeadvisor. You can read customer reviews before hiring.

I'm in Clarendon Hills, so a bit south of you, but in case it helps: I used Collins and Sarsfield for a large addition and extensive interior renovation (kitchen and 4 baths.) That was many years ago, but they've built several homes in the western suburbs more recently, including some for friends of mine. One of the business owners lives in Clarendon Hills, so his local reputation is important to him and he's very conscientious. If they don't do work in your area, they may know someone who does.