Dad said yes to one grab bar. Do not turn that small agreement into a bathroom renovation summit.
Your job is narrower: find someone who can put the right bar in the right place, anchor it to something solid and leave proof of what was done. The installer should be able to explain the work without treating Dad like cargo.
Local option: New Plan Care gives families in the St. Louis area in-home help so a parent can stay home: companionship, help with bathing and dressing, meals, and overnight care. Call (314) 405-0887.
This is a provider comparison, not a product beauty contest. A handsome bar attached badly is still a towel rack with ambitions.
Start with Dad's actual move
Before calling installers, watch the moment the bar is supposed to help. Does Dad reach while stepping over the tub edge? Push up beside the toilet? Steady himself when turning out of the shower?
Ask him to show you where his hand naturally goes, without making him repeat a movement that looks unsafe. Mark that area with painter's tape. Note which hand he uses and whether a door, faucet, towel rack or shower control competes for the same space.
If a therapist or other qualified professional has already recommended a position, give that written recommendation to every bidder. Do not let three installers quote three different jobs because each one guessed at placement.
The federal ADA design standards contain dimensions and structural criteria for grab bars, including a nonrotating gripping surface and support for a substantial applied force. Those standards generally govern covered facilities, not an ordinary private house. Use them as a technical reference, not as proof that a particular layout is legally required in Dad's bathroom. The underlying federal sources are identified on the Sources page.
Ask what is behind the wall
The first useful question is not, "What kind of bar do you sell?" It is, "What will you anchor it to?"
A serious installer should discuss studs, blocking or another fastening system appropriate to the wall assembly. Tile, drywall and fiberglass surrounds are finished surfaces. They are not, by themselves, an explanation of structural support.
Ask each candidate:
How will you determine what is behind this exact mounting area? What fasteners and mounting method do you expect to use? What changes if the studs are not where the bar needs to go? Will you open the wall or use another rated system? Who repairs tile, drywall or the shower surround if access is required? How will penetrations in a wet area be sealed?
Reject any answer built around suction alone for a bar Dad will rely on with his weight. Also reject "we always hit a stud" when nobody has inspected the wall. Houses are not known for arranging their framing around later conversations.
Compare the written scope, line by line
Get the same basic information from every provider. The Federal Trade Commission advises consumers to verify licensing where required, ask for proof of insurance and obtain a written estimate describing the work, materials, completion terms and price. Missouri consumer guidance also recommends comparing multiple bids and checking contractor backgrounds. See the agency references collected on the Sources page.
Each written scope should identify the room and wall, the number and length of bars, the bar material or model, the planned position, the anchoring method, responsibility for wall repairs, cleanup and any workmanship warranty. It should also say whether the quoted amount can change after the wall is examined and who must approve a change.
Do not compare totals until the scopes match. One proposal may include opening and patching the wall. Another may quietly assume usable blocking already exists. Those are not competing prices for the same work.
Ask for the legal business name, physical contact information and proof of current liability insurance. Confirm any locally required contractor credential or permit with the city or county that has jurisdiction over Dad's address. St. Louis City, St. Louis County and the surrounding municipalities do not share one universal permit counter. The provider saying "no permit needed" is not the authority that decides.
Make the installer explain the handoff
The job is not finished when the screws disappear under trim plates.
Ask how the installer verifies that the bar does not rotate or move. Ask what Dad should inspect, what cleaning products should be avoided and whom to call if the bar loosens or the wall develops a crack or leak. Request the product instructions and the final invoice showing what was installed.
Take photographs before work starts, after any wall opening and after completion. If blocking or anchors will be concealed, ask for a photograph before the opening is closed. Keep those images with the invoice. The next installer should not have to conduct archaeology.
Dad should try the reach while the installer is still present, but he should not perform a risky transfer merely to demonstrate gratitude. He can confirm whether the location feels usable while standing or sitting securely. If the position is wrong, settle that before the tools leave.
The legal line if Dad rents
If Dad owns the house and can make his own decisions, it is his call. His agreement to one bar is not permission to redesign the bathroom or authorize work elsewhere.
If he rents, get the housing provider's written permission before drilling. Federal fair housing guidance treats disability related grab bars as a possible reasonable modification. The resident commonly pays for the work, and a housing provider may impose reasonable conditions concerning workmanship and, in some circumstances, restoration of an interior modification. Different rules can apply in federally assisted housing. HUD and Justice Department guidance is listed on the Sources page.
Send a narrow written request describing the bar, proposed location, installer and method. Ask whether the housing provider requires a particular submission, permit, proof of insurance or restoration agreement. Do not accept an oral hallway approval for a hole in somebody else's tile.
If ownership, consent or housing rules are disputed, pause the installation and get advice from an appropriate local housing or legal resource. This guide gives you a checklist, not legal counsel.
Give Dad a clean choice
Bring him two comparable scopes, not a folder full of contractors. Say what differs: "This installer plans to open and block the wall. This one proposes a rated mounting system without opening it. Both will put the bar where you marked it. Which approach do you want me to ask more about?"
That keeps the decision attached to the thing Dad accepted. It also gives him a real veto over appearance, placement and who enters his house. For more ways to make a limited offer without turning it into a fight, use Start Here.
Your next move tonight
Put painter's tape where Dad naturally reaches. Take one wide bathroom photo and one close photo of that wall. Then call two installers and ask the same first question: "Before you quote it, how will you identify the structure behind this exact spot and document what the bar is anchored to?" Write down the answers. The provider who cannot answer does not get the wall.