Where the Money Goes in a Bathroom Remodel

A bathroom is usually the smallest room in a remodel, yet nearly every trade works in it: demolition, framing, plumbing, electrical, ventilation, waterproofing, tile, cabinetry, glass and paint. This page walks through each category so you can read an estimate and see why two bids differ. It describes costs relatively. The only dollar figures are JDI Construction's published planning ranges and official fees.

The categories at a glance

Design, drawings and permits

Design fixes the layout, the vanity size, the shower size and every selection. Its cost shows up less as a line item than as fewer changes later. Permit fees are official figures. In the City of Vancouver, building permit fees scale with the project's valuation of labor and materials, and a remodel that touches two or more codes is charged as a "Single Permit" at 160% of the building-only fee, with plan review at 50% of that. The table and the trade fees are on bathroom remodel cost in Vancouver.

Demolition and protection

Tearing out a bathroom is heavier work than it looks. Older showers were often tiled over a thick mortar bed, cast iron tubs are heavy, and the debris has to go somewhere. In Clark County, Waste Connections holds the exclusive authority to collect and haul garbage, and the County says a contractor may haul only garbage its own personnel produced, in a company-owned and labeled vehicle. Columbia Resource Company, which runs the transfer stations, lists $118.65 per ton and a $10.00 transaction fee per trip for self-haul loads. Dust protection for the rest of the house belongs in this line too.

Plumbing

Plumbing is the line that swings most with one decision: whether anything moves. Resetting a toilet and vanity on existing drains is a modest job. Moving a toilet or shower drain means opening the floor, rerouting the drain at the right slope, venting it, and passing a rough inspection. In Washington, plumbing work for a homeowner must be done by an L&I-certified plumber, or by the owner on their own home under RCW 18.106.150. You can check a plumber's certificate on L&I's Verify tool. The shower valve sits in this line, and a code-required pressure-balance or thermostatic valve is a fixed cost, not an upgrade. See moving bathroom plumbing.

Electrical, lighting and ventilation

Bathrooms need protected outlets, lighting at the mirror and in the shower, and often a dedicated circuit for a heated floor or a steam generator. Older houses usually need more electrical work to reach current code. The exhaust fan is not optional: Washington's residential code (WAC 51-51-1505) requires local exhaust in bathrooms at 50 cfm intermittent or 20 cfm continuous, ducted directly outside. A quiet, properly ducted fan costs more than a builder-grade one and is one of the cheapest ways to protect everything else in the room. Bathroom ventilation explains why.

Waterproofing and tile: usually the biggest labor line

In a full bathroom, the shower is where the hours go. It is built in layers, by hand, and every layer has to be right before the next covers it:

1. Framing, blocking for grab bars and glass, and any niche or bench.
2. Backing board on the walls and a sloped floor to the drain.
3. A waterproof membrane or liner, tested before tile goes on.
4. Tile, set flat and aligned, with cuts around the valve, niche and drain.
5. Grout, sealant at changes of plane, and trim pieces.

Small tile, patterns, niches, benches and curbless entries all add hours. That is why JDI prices a custom tile pattern or inlay ($3,000-$9,000) and a walk-in or curbless shower ($4,000-$10,000) as separate add-ons. The materials themselves vary from lower-cost ceramic to higher-cost stone, but on many bathrooms the labor to install them is the larger share. Waterproofing explained and the bathroom tile guide go further.

Vanity and counter

The vanity is the clearest example of a tier decision. Stock cabinetry belongs to JDI's Essential tier, custom-built cabinetry and premium quartz to Signature, and fully custom millwork with high-end stone to Luxury. A double vanity is a $3,000-$8,000 add-on in JDI's calculator, because it brings a second sink, faucet, drain and more counter. See bathroom vanities.

Fixtures, tub and glass

Toilets, faucets and shower trim run from lower-cost to designer lines, and the finish you pick affects price across every piece. A freestanding soaking tub is a $2,500-$6,500 add-on and a heated tile floor $2,000-$5,000. Shower glass is measured after tile is finished; a single fixed panel costs less than a full enclosure with a door, and frameless glass with heavier hardware costs more than framed.

Finishes

Drywall repair, moisture-resistant paint, trim, mirrors, towel bars and accessories are a smaller share, but they are the last things you see and touch. Leaving them to the end is fine; leaving them undecided is not.

Sales tax

Every JDI range is before sales tax. Under WAC 458-20-170 a Washington contractor collects sales tax on the full contract price, labor included. The rate depends on the address. The kitchen guide's sales tax on remodeling page shows the current Clark County rates.

Contingency

Bathrooms hide water damage better than any other room. Rot under a toilet flange, a soft subfloor at the tub or framing damaged by a failed shower pan only show up at demolition. JDI's planning ranges exclude that kind of unexpected structural repair and handle it by written change order. This guide does not give a contingency percentage because no reliable local figure exists; set aside more for an older house or a room that has leaked. Hidden water damage lists the warning signs.

Seeing your own numbers

The bathroom cost calculator gives a planning range for your room and tier in about 90 seconds. For a real split of where your budget goes, JDI Construction provides an itemized plan and a 3D design layout after a free in-home consultation. How to save on a bathroom remodel shows which lines are safe to trim, and bathroom remodeling in Vancouver explains how JDI works.