Bathroom vanity clearances in plan — IRC and NKBA minimums around the vanity

Code sets the floor: a toilet centerline ≥15″ from the vanity edge (IRC R307.1 / IPC 405.3.1) and ≥21″ of clear floor in front of the lavatory, and the entry door must not swing into the vanity. NKBA’s 18″ and 30″ make the room comfortable.

A top-down plan of a bathroom vanity against the back wall showing the clearances the calculator checks. An adjacent toilet must have its centerline at least 15 inches from the vanity edge — the IRC R307.1 and IPC 405.3.1 minimum — and NKBA recommends 18 inches. There must be at least 21 inches of clear floor in front of the lavatory per the IRC, with NKBA recommending 30 inches, shown as a green zone. The bathroom entry door must not swing into the vanity. A legend marks the blue dimensions as the code minimum and the green zone as the NKBA recommended clearance. — Source: IRC R307.1 / IPC 405.3.1 (fixture clearances); NKBA Bath Planning Guidelines 2 & 6

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A top-down plan of a bathroom vanity against the back wall showing the clearances the calculator checks. An adjacent toilet must have its centerline at least 15 inches from the vanity edge — the IRC R307.1 and IPC 405.3.1 minimum — and NKBA recommends 18 inches. There must be at least 21 inches of clear floor in front of the lavatory per the IRC, with NKBA recommending 30 inches, shown as a green zone. The bathroom entry door must not swing into the vanity. A legend marks the blue dimensions as the code minimum and the green zone as the NKBA recommended clearance.

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    <img src="https://remodelcalculators.com/api/figure-embed/bath-vanity-clearances" alt="A top-down plan of a bathroom vanity against the back wall showing the clearances the calculator checks. An adjacent toilet must have its centerline at least 15 inches from the vanity edge — the IRC R307.1 and IPC 405.3.1 minimum — and NKBA recommends 18 inches. There must be at least 21 inches of clear floor in front of the lavatory per the IRC, with NKBA recommending 30 inches, shown as a green zone. The bathroom entry door must not swing into the vanity. A legend marks the blue dimensions as the code minimum and the green zone as the NKBA recommended clearance." width="800" height="500" style="width:100%;height:auto;border:0" loading="lazy">
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    Diagram: <a href="https://remodelcalculators.com/construction-diagrams/bath-vanity-clearances" target="_blank" rel="noopener">Bathroom vanity clearances in plan — IRC and NKBA minimums around the vanity</a> — courtesy of <a href="https://remodelcalculators.com" target="_blank" rel="noopener">RemodelCalculators.com</a>
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