The house is a 1962 ranch off Minnesota Avenue, and the only full bathroom in it measures five feet by eight. Cast iron tub, a thirty inch vanity, one rattling fan, and a soft spot in the floor by the toilet. Search bathroom renovation sioux falls sd and you will find no shortage of crews willing to gut all of it for you. Here is what the sketch on the kitchen table never shows. In a small older bathroom, the single biggest lever on the final price is whether the fixtures stay on the wall they already sit on, because everything else is finish work and finish work is fairly predictable. Keep them put and a remodel stays a remodel. Move them and you have bought a plumbing job with a bathroom attached.
The Wet Wall Decides Your Final Price
Nearly all of the drain and vent piping for a bathroom runs inside one stud bay, what plumbers call the wet wall, meaning the single framed wall carrying waste and air for the whole room. Sinks are cheap to shift a few feet. Toilets are a different story entirely. A three inch toilet drain has to hold its slope the whole way to the stack, and in a slab or a finished basement ceiling that means cutting concrete or pulling down the drywall below. This Old House puts the average bathroom remodel at $15,586, with a typical range of $6,456 to $24,715 and the plumbing portion averaging $5,545. The jobs that land near the top of that range are almost always the ones that relocated fixtures. Freddie Mac's weekly rate survey had the thirty year fixed at 6.55 percent in July 2026, which is one reason so many calls now are about fixing the one bathroom instead of buying a house with two.
Before anyone hands you a number, make them commit to what is behind the number. An estimator who has actually opened up a 1960s bathroom in this part of South Dakota will answer these without stalling. The vague answers are the expensive ones.
● Does this plan move the toilet or its drain? A good answer names the exact distance and what that distance adds to the price.
● Where does the exhaust fan vent to right now? A good answer is the roof or a sidewall, never the attic.
● What is the allowance for rot or hidden damage under the tub and flange? A good answer names a dollar figure instead of a shrug.
● Who pulls the permit, and which inspections apply on a job this size? A good answer names the office and who schedules the visit.
Water Damage Is What Actually Kills A Bathroom
A bathroom renovation sioux falls sd homeowners never have to redo twice starts under the floor, not at the tile counter. Pull a forty year old toilet and the case we see most often is a dark ring in the subfloor around the flange, soft enough to take a screwdriver, from a wax seal that failed several winters back. That plywood has to come out. Tiling over it buys you a beautiful floor with rot underneath, and the failure shows up as loose grout and a spongy step in about two seasons. The other repeat offender is ventilation. A fan ducted into the attic dumps warm wet air into the insulation, and in a climate that sits below zero for weeks that moisture freezes and drips back through the ceiling in March. Never vent a bathroom fan into an attic or a soffit cavity. Run the duct all the way outside.
Sizing matters as much as routing here. The rule of thumb most installers work from is one CFM per square foot of floor, so that five by eight room wants fifty CFM at minimum. ENERGY STAR reports that certified ventilating fans use about 48 percent less energy than standard models, and certified fans with lighting average 70 percent less. That matters on a unit you should be running twenty minutes past every shower. Quiet fans actually get used. Loud ones get switched off, and a fan nobody runs is the same as no fan at all.
Two more items belong in the scope before anybody talks about tile. Bathroom receptacles need GFCI protection, and if the outlet beside your sink has no test and reset button on its face, that is a fix to make while the wall is open rather than a project for later. If the vanity plumbing runs through an exterior wall, ask what the plan is for insulation behind the supply lines, because a January cold snap here finds those pipes with impressive reliability. Permit rules vary by city, so ask Sioux Falls Building Services which parts of your scope need one and who is expected to schedule the inspection.
Spend The Money Where The Water Goes
Leave the toilet and the tub drain where they are, and the money frees up for the parts that actually fail. A properly ducted fan, a solid subfloor, a real waterproofing membrane behind the shower surround, a valve you can still buy parts for in ten years. That is an unglamorous shopping list. It is also the difference between a bathroom that photographs well in November and one that still works after two teenagers have used it for a decade. If the layout genuinely does not function, if the door swing hits the vanity or a walk in shower will not fit without moving the drain, move it deliberately and budget for it on day one. Just do not let a five foot toilet relocation slide into the plan because it looked tidy on graph paper.
