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Fixtures

Toilet

An oval bowl shape connected to a rectangular or rounded tank against the wall. Drawn to actual fixture size, approximately 28 inches deep and 18 inches wide.

Also: water closet, WC, commode

Found in: Every bathroom, half baths, powder rooms

Bathtub

A large rectangle (60 by 30 inches standard) with one rounded end. The drain circle is at one end, and the faucet wall is typically at the same end as the drain.

Also: tub, soaking tub, bath

Found in: Full bathrooms, guest baths, children's bathrooms

Shower Stall

A square (36 by 36 inches minimum) or rectangle with a drain circle at or near center. The opening is shown as a gap in the enclosure outline, sometimes with a door arc.

Also: shower enclosure, stand-up shower, walk-in shower

Found in: Master bathrooms, guest baths, pool houses, basement bathrooms

Vanity Sink

A rectangle representing the vanity cabinet and countertop with an oval basin recessed inside. Typically 24 to 36 inches wide for a single vanity. A faucet circle sits above the basin.

Also: bathroom vanity, vanity basin, sink cabinet

Found in: Against walls in every bathroom, powder rooms

Double Vanity

A longer rectangle (60 to 72 inches wide) with two oval basins spaced evenly inside, each with a faucet circle. Provides two separate wash stations.

Also: his and hers sink, dual vanity, double sink vanity

Found in: Master bathrooms, jack-and-jill bathrooms, large guest baths

Pedestal Sink

A small oval or circle (the basin) mounted on a thin vertical line or narrow rectangle (the pedestal base). No surrounding counter or cabinet is shown.

Also: freestanding sink, pedestal basin, column sink

Found in: Powder rooms, half baths, vintage or traditional style bathrooms

Accessories & Ventilation

Towel Bar

A short straight line drawn parallel to and slightly away from the wall surface, typically 18 to 24 inches long. Positioned near the shower, tub, or vanity area.

Also: towel rack, towel rail, towel holder

Found in: Walls near showers, beside tubs, near vanities

Medicine Cabinet

A rectangle drawn on the wall above the vanity, sometimes with a mirror indication (hatching or label). Recessed models are drawn within the wall thickness.

Also: mirrored cabinet, bathroom cabinet, wall cabinet

Found in: Above vanity sinks in bathrooms, powder rooms

Exhaust Fan

A square with an X, fan blade symbol, or the letters EF, drawn on the ceiling plan. Indicates a ventilation fan that removes moisture and odors from the bathroom.

Also: bath fan, ventilation fan, vent fan

Found in: Ceiling of every bathroom without an operable window, often centered over the shower or toilet area

How to Read Bathroom Floor Plan Symbols

Bathroom plans pack a lot into a small space, so every symbol matters. Start by finding the toilet — the oval-and-rectangle shape is the most recognizable fixture. It needs at least 15 inches from its centerline to any side wall or obstruction, and 24 inches of clear space in front (30 inches is recommended). If the plan meets these minimums, the bathroom will feel usable.

Next, look for the bathtub or shower. A standard tub is drawn as a 60 by 30-inch rectangle, often tucked into an alcove between three walls. Showers are squares or rectangles, typically 36 by 36 inches at minimum. Walk-in showers may be larger and shown with a partial wall or glass panel indicated by a thin line. Look for the drain circle inside the tub or shower footprint.

The vanity is shown as a rectangle along one wall with one or two oval basins inside it. A double vanity is typically 60 inches wide with two basins — standard in master bathrooms. A pedestal sink looks like a small circle or oval on a thin stem, taking up less visual space because it has no counter or cabinet.

Accessories like towel bars, medicine cabinets, and exhaust fans are smaller symbols but important for function. A towel bar is a short line segment on the wall near the shower or tub. The exhaust fan is usually a square with an X or fan blades symbol on the ceiling plan. A medicine cabinet may be drawn as a rectangle on the wall above the vanity, sometimes with a mirror indication.

Common Mistakes

The most frequent mistake is not checking clearance dimensions — a toilet that looks fine on paper may be too close to the vanity or tub when built. Another error is confusing a pedestal sink with a vanity sink; pedestal sinks provide no counter or storage space, which is a major lifestyle difference. People also often overlook the exhaust fan symbol, which is required by code in bathrooms without operable windows.

Pro Tips

• Verify at least 15 inches from the toilet centerline to any wall or fixture — code minimum is tight but livable.
• Double vanities need at least 60 inches of wall space — make sure the plan shows enough room.
• Look for the exhaust fan symbol on the ceiling plan — it is required by code if the bathroom has no window.

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