House faces SOUTH (front door is to the south). Back yard is to the NORTH. Tub sits against the north wall with a window above looking out to the back yard. Shower is on the south wall, front-of-house side. Bathroom door is on the east wall. Craig's plan is drawn with NORTH on the LEFT — a 90° CCW rotation from standard north-up convention.
Craig's plan reads with NORTH on the left. Tub on the north wall (back yard window). Shower on the south wall (front of house side). Bathroom door on the east wall. Vanity on the west wall.
The vanity sits on the east wall — the same wall as the toilet and the door, positioned south of the toilet and north of the door. Wisconsin SPS 382.34 requires 15" minimum from the toilet centerline to any sidewall, fixture, or partition on the same wall. That sets the vanity's west edge at 64" south of the NE corner *(49" toilet ¢ + 15" code zone)*, and the door's north edge at 114" sets the east edge. Available vanity zone = 50". Crystal's 42" goal lands inside that zone with 8" of slack — no door narrowing needed.
| Constraint | What it is | Position |
|---|---|---|
| Toilet 15" code zone (N-end) | Vanity west edge must be ≥ 15" south of the toilet centerline along the east wall — that's the SPS 382.34 clearance rule applied to a fixture on the same wall as the toilet. | ≥ 64" south of NE corner |
| Door north edge (S-end) | Vanity east edge must end at the door's north jamb to clear the door swing into the bath. | ~114" south of NE corner (current door) |
| Door-swing arc | The 38-1/4" door swings into the room. Vanity on the east wall north of the door is clear of the arc. | not constraining |
At the current 38-1/4" door rough-in, the vanity zone on the east wall is 50" wide (from 64" to 114" south of the NE corner). Crystal's 42" StarMark cabinet drops into that zone with 8" of slack — enough flexibility to position the cabinet against either the north end (next to the toilet's 15" zone) or the south end (next to the door's north jamb), or split it 4" / 4". No door-narrowing needed.
| Door width | Door N edge at | Max vanity width |
|---|---|---|
| 38-1/4" (current rough-in) | 114" | 50" (42" goal fits) |
| 30" | 122-1/4" | 58-1/4" |
| 28" (Wisconsin UDC minimum) | 124-1/4" | 60-1/4" |
Wisconsin · City of Madison · Dane County — what governs the dimensions on this page.
| Code | What it requires |
|---|---|
| Wis. Admin. Code Ch. SPS 382 (Plumbing Code, formerly Comm 82) |
The governing Wisconsin plumbing code. Administered by WI Dept. of Safety and Professional Services. |
| SPS 382.34(2) — water closet clearances | Toilet centerline ≥ 15" from any sidewall, fixture, or partition. Clear floor space ≥ 21" in front of bowl. |
| SPS 320-325 — Uniform Dwelling Code | Governs one- and two-family dwellings. Interior bathroom door rough opening typically ≥ 28". |
| City of Madison Building Inspection | Enforces SPS 382 locally (608-266-4551). The rough-in for THIS bath was approved 2026-03-04 by Terry Smith with no conditions — meaning the 18-3/4" drain, 49" stack centerline, and 42" supply pass code at the rough-in stage and the eventual fixtures must fit that approved envelope. |
| Dane County | Follows Wisconsin state code for plumbing fixture clearances. No county-level overlay on the 15" / 21" requirements. |