Short answer
Hire whoever can settle the three things that decide whether a bathroom lasts: the layout (where the fixtures go and whether the plumbing moves), the waterproofing behind the tile, and the ventilation. A bath contractor builds well when the layout is already decided. A tile or fixture showroom helps you choose products. An independent designer plans the room and hands it to a separate builder. One firm that designs and builds puts the plan and the construction under one person.
If the bathroom keeps its layout and only needs new finishes, a good contractor can be enough. If fixtures move, walls change or space is borrowed from a closet, which is the case in most older Dallas and Park Cities primary baths, hire someone who designs the whole room and stays responsible for it through the build.
On this page
The three decisions that matter most
Three things decide whether a bathroom serves you for decades: the layout, the waterproofing and the ventilation. Tile, vanity, fittings and lighting carry the style, and they matter, but they cannot correct a cramped arrangement or protect a shower that was built wrong underneath.
Does the plumbing move? That is the first question, before any layout is drawn, because it is the largest single cost variable in a bathroom. Keeping the toilet, shower and vanity where they are keeps the job simpler. Moving them can make the room far more useful. Either can be right, but it has to be a deliberate decision, made with the house in front of you.
What is the house sitting on? In a pier-and-beam house there is a crawl space, and rerouting a drain is comparatively straightforward. On a slab, moving plumbing means cutting concrete, and a post-tension slab needs care around the tensioning cables. A layout conversation that never asks about the foundation has left the biggest construction question open.
Where does the space come from? In the older Park Cities houses, bathrooms are few and small by current expectations. Enlarging a primary bath usually means borrowing space from a bedroom or a closet rather than adding on, so the person planning it has to look at the rooms next door, not only at the fixtures inside the existing walls.
Then come the questions that decide how the room feels every morning: whether the door swings clear of the fixtures, where the towels hang, whether the lighting reaches both sides of your face, and whether the vanity gives you usable counter or just a large cabinet. The order these get settled in is set out in how to plan a bathroom remodel.
When you interview anyone for the job, listen for questions about how the house is built and how you use the room. Product questions should come after those, not instead of them.
The four routes
Almost every bathroom remodel in Dallas is designed in one of four places. The names tell you less than you would think: a contractor may offer real design help, a showroom may draw a layout, and a designer may or may not stay involved during construction. So treat the descriptions below as the usual division of work, and confirm the actual scope in writing with whoever you talk to.
A bath remodeling or plumbing contractor
Where it is genuinely good. Construction. A capable contractor knows how a shower pan is built, what a slab does to a drain line, and how long each trade needs. When you already know the arrangement you want and the work is mostly replacing what is there, a contractor can lead the job well. A plumbing-led contractor brings real focus to fixture locations and plumbing changes.
Where it stops. The design is usually a means to a bid. Selections often arrive as allowances, a dollar figure for tile or fittings you go and choose within, and that is where budgets drift. The room-level questions (proportion, where the sconces land, how the vanity meets the window, how the bath relates to the bedroom it opens from) tend to get less attention than the construction. Ask whether the proposal includes those decisions, rather than assuming they will sort themselves out on site.
A tile or plumbing-fixture showroom
Where it is genuinely good. Seeing and comparing. A showroom lets you put tile next to stone, hold a faucet finish against a vanity sample, and understand what is available and how long it takes to arrive. Some showrooms will also sketch a layout.
Where it stops. At the products. Choosing the shower tile does not decide who builds the waterproofing underneath it, who checks the slope of the pan, or who makes sure the niche lines up with the grout joints. Somebody still has to turn a collection of attractive products into a buildable plan. Establish who that is before you order anything.
An independent interior designer with a separate builder
Where it is genuinely good. The room. A designer plans the layout and clearances, draws the elevations, chooses the tile, stone, vanity, fittings, mirror and lighting against each other, and is not tied to one showroom. If you want a dedicated design relationship and are comfortable holding two contracts, this route can produce an excellent bathroom.
Where it stops. At the hand-off. Once the drawings go to a separate contractor, someone has to own the gap between paper and site: a substituted membrane, a niche moved a few inches, a condition found when the old tile comes off. When something fails, the designer and the builder can each point at the other. The guide to design-build or hiring separately shows where that seam usually fails and how to protect it if you choose this route.
One firm that designs and builds
Where it is genuinely good. Continuity. The same firm draws the bathroom, makes the selections with you, pulls the permits, schedules the trades and checks the work against the approved drawings. The people who drew the room have to account for how it gets built, and there is no one else to blame.
Where it stops. It depends on who is actually designing. Some design-build firms are construction companies with a design desk, and the room is still designed as a means to a build. The version worth paying for is one where the designer runs the construction, not the other way around.
Jan Revels, ASID, draws the bathroom, chooses the selections with you and runs the build as general contractor. The person who decided where the shower drain goes is the person who checks the membrane before the tile goes on.
Side by side
| Bath contractor | Showroom | Independent designer | Designs and builds | |
|---|---|---|---|---|
| Who designs | The contractor, as part of the bid | Showroom staff, within the products | The designer | The firm |
| What gets designed | What will be built | Product combinations | The whole room | The whole room |
| Plumbing and walls | Yes | No | Planned, built by others | Yes |
| Who owns the waterproofing | The contractor | Whoever installs; set it in writing | The builder, from the designer's drawings | The firm |
| Who answers when something fails | The contractor, for what it built | The installer | Designer or builder, depending on the cause | One firm |
| Best fit | Layout stays, finishes change | Choosing finishes | You want to hold two contracts | Layout, plumbing or walls change |
Whichever route you lean toward, ask for the scope in writing. "Includes design" can mean a sketch on the back of a bid or a full set of plans and elevations.
Primary bath, Jack & Jill, powder room
The right route also depends on which bathroom it is, because the three common types ask very different things of whoever plans them.
The primary bath
This is the room that most deserves careful layout work before anyone picks the tile. The shower, vanity, toilet, storage and the closet next door have to work together, and in an older house the room often has to grow into the space around it. A contractor-led route can suit a straightforward replacement. Once the walls or fixture locations are in question, a designer with a builder, or one firm that does both, earns its place.
In Preston Hollow and the Park Cities, decide first what the primary bath has to do. If the tub takes valuable space nobody uses, a generous walk-in shower plus a larger closet is a trade most households prefer once they see it drawn. Keep at least one bathtub somewhere in the house, usually in a family or secondary bath, since buyers with small children look for one. That is a whole-house decision, not a primary-bath decision. Primary bathroom layouts that work frames the arrangement, and shower or tub helps decide which fixture belongs where.
The Jack & Jill bath
The challenge here is sharing. Walk through the plan from each bedroom that opens into it: the doors, privacy, where each person's towels go, whether someone at the vanity blocks someone coming through. A product package does not answer any of that. Ask whoever designs it to show you how the room works at 7 a.m. with two people in it. If the designer and the builder are separate, make sure both are working from the same resolved layout.
The powder room
Here a more focused approach can be right, because the fixtures often stay where they are. A showroom is genuinely helpful with the vanity, fittings, mirror and finishes, and a contractor can lead when the construction scope is clear. Small does not mean undesigned, though: vanity depth, the door swing, the mirror and the light still have to agree. In older homes the room's width is rarely a stock size, so a custom vanity is often the better answer. The powder room guide covers why this is the one room worth being bold in.
The rule across all three: choose the route by the decisions that are still open. If you need someone to work out the right arrangement, hire for that before you buy the pieces.
Waterproofing and ventilation belong in the scope
Whichever route you choose, ask how the shower will be built before you discuss its decorative tile. A bathroom fails early when water gets behind the tile: from absent or failed waterproofing, an incorrectly built pan, or rigid grout where a flexible movement joint was needed. It is invisible for years and then very expensive, and it is entirely preventable during construction.
The shower assembly. Cement or foam board, a continuous membrane, a correctly sloped pan, and flexible movement joints at every change of plane. Ask the person running the construction to explain how those pieces form one system, and who is responsible for it.
See it before it is covered. Ask to see the membrane before the tile goes over it. Photograph every open wall before it is closed. In five years you will know exactly where the studs, blocking and pipes are.
Do not tile over a shower. New tile over old tile buries whatever waterproofing exists, and you inherit its condition without knowing it. Showers are the wrong place to save that particular amount of money.
Ventilation. Sized to the room, ducted outside, on a timer or a humidity sensor. Ask who specifies it and who checks the duct actually reaches the outside. A fixture selection meeting will not settle it.
While the walls are open. Plan blocking for grab bars, towel bars and wall-hung fixtures; it costs almost nothing now and a great deal later. Light the mirror from both sides, add ambient light, and include a low-level night light.
Finishes that have to perform. Choose grout against a wet sample board, because it reads differently wet, and choose floor tile with slip resistance. The bathroom tile guide goes further on both.
Cost and schedule before construction
Bids cannot be compared until the scope is settled. A lower number may reflect a different layout, fewer drawings, unfinished selections or a different idea of who supplies what. Compare what is included before you compare the totals.
Settle the decisions in order: whether the plumbing moves, whether space comes from an adjoining room, then the vanity dimensions, the shower arrangement, the elevations and the selections. Each one gives the construction price a firmer base. Then agree how changes will be handled once work starts; change orders and budget control explains how allowances quietly become change orders.
| Phase | Typical duration |
|---|---|
| Design and selections | 4–8 weeks |
| On-site construction, full primary bath | 4–8 weeks |
| Powder room | 2–3 weeks on site |
| Frameless shower glass | 2–3 weeks after the tile is finished and measured |
Highland Park and University Park each issue their own permits and run their own inspections, separately from the City of Dallas, and that review time is added to the schedule. A Park Cities project is planned around its own town hall. Tile setting and waterproofing also include curing periods that cannot be compressed, so a bathroom that seems to stand still for a few days usually is not.
Questions to ask whoever you hire
Ask these of every route, including us. Good answers name a person, a document and a responsibility.
- Who draws the complete room? Ask for a floor plan and elevations that settle fixture placement, vanity dimensions, the mirror and the sconces.
- Does the plumbing move, and what does the foundation mean for that? Pier-and-beam, slab or post-tension slab each lead to a different answer.
- Who is responsible for the shower's waterproofing? Board, membrane, sloped pan, movement joints, and when you can see the membrane before tile.
- Who handles ventilation and blocking? The duct route to the outside, the controls, and support for everything that hangs on a wall.
- Who handles the permit and inspections? And for which authority: Dallas, Highland Park or University Park.
- What has to be selected before construction starts? Tile, grout, vanity, fittings, lighting and glass, and who settles each one.
- Who answers if the finished work has a problem? If several businesses are involved, how is a problem that crosses their scopes investigated?
- What does the schedule include? Design, construction, permit review, curing and the wait for shower glass.
The guide on how to vet a contractor in Dallas covers the checks behind these questions. Before the bathroom is opened, you should be able to say who owns each part of the work.
How Chateau Concepts does it
Chateau Concepts handles bathroom remodeling in Dallas and the Park Cities as one job: primary baths, Jack & Jill baths and powder rooms, by one team from the layout to the last fixture. Jan Revels has practiced interior design in Dallas since 1997, founded Chateau Concepts in 2001, holds a BFA in Interior Design from the University of North Texas and is an ASID Allied Professional. Chateau Concepts is registered with the City of Dallas as a general contractor, so the person who designs the room also runs the build.
It runs in four steps. A consultation walks the room, establishes whether the plumbing can move and is honest about what that costs. The plan and elevations draw every wall, including where the sconces land. Selections are chosen against each other, not one at a time. The build has the waterproofing inspected before tile and the curing respected.
The before-and-after photographs show real bathrooms, including a tub turned into a walk-in shower, a primary bath tub deck and surround, and a powder room vanity and mirror. Chateau Concepts is rated 4.9 stars from 15 Google reviews. If you would rather keep your own builder, Jan also works on a design-only or hourly consulting basis.
Call 214-797-4657 or book a design consultation, and bring photos of the room and anything you know about the foundation.
Key takeaways
- Layout, waterproofing and ventilation decide whether a bathroom lasts; finishes come after.
- Whether the plumbing moves is the largest cost variable, and the foundation decides how hard it is.
- A contractor suits a bathroom whose layout stays; a showroom helps choose finishes; a designer or a design-build firm earns its place when fixtures, walls or space change.
- Get in writing who owns the waterproofing and who answers if it fails.
- Highland Park and University Park run their own permits and inspections; plan the schedule around them.
Frequently asked questions
Who should I hire for a bathroom remodel in the Park Cities?
What should I ask a primary bathroom remodel contractor in Preston Hollow first?
Can a tile or plumbing showroom design my whole bathroom?
How long does a bathroom remodel take in Dallas?
Do Highland Park and University Park use City of Dallas permits?
What should I see before the shower tile goes on?
Can I tile over my existing shower tile?
Does Chateau Concepts design and build bathrooms?
Jan has practiced interior design in Dallas since 1997 and founded Chateau Concepts in 2001. She holds a BFA in Interior Design from the University of North Texas. She designs and general-contracts residential and commercial projects across the Park Cities, Preston Hollow and North Dallas. Read her full profile →
Written and reviewed by Jan Revels before publicationWork with Chateau Concepts
Jan Revels handles both sides of a project in Dallas and the Park Cities — the design and the build.