How to Spec a Bespoke Bathroom Vanity

Specifying a bespoke vanity unit is a different process from buying a standard bathroom. The decisions need to be made in a specific order — starting with the wall, not the finish. Get the sequence wrong and you will be making expensive changes late in the project.

Step 1: Measure the Wall First

Before any decision about material, finish, or bowl configuration, measure the full available width of the wall and note the position of any waste pipes. These two measurements constrain everything else, and discovering a conflict between your preferred layout and your existing plumbing after the stone has been cut is not a situation anyone recovers from cheaply.

Also confirm whether the wall can support a wall-hung installation. Solid brick and concrete walls are almost never a problem. Stud partitions and period plaster walls may need additional fixing plates or noggins added before the vanity arrives. A structural surveyor or an experienced contractor can confirm this in an hour — do it before you order, not on delivery day.

Step 2: Bowl Configuration

A single integrated basin works well in vanity units up to around 1200mm. Above that width, two people are likely to use the space simultaneously, and a double basin layout becomes worth considering. The choice between single and double affects the stone layout, the tap drilling positions, and the waste routing — all of which need to be locked in before fabrication begins.

For double basins, the distance between the two waste outlets and their route to the wall stack matters more than most clients expect. Confirm this with your plumber before finalising the brief. Moving a waste position after the stone top is cut requires remaking the stone — a cost and delay that is entirely avoidable with a ten-minute conversation at the right point.

Step 3: Choose Your Material

For integrated countertop-and-basin combinations, sintered stone is the practical default. It can be produced in large formats without joins — a single piece spanning 2400mm is achievable in sintered stone where it is not in ceramic — and it requires no maintenance. No sealing, no periodic treatments, no specialist cleaning products. The surface performs identically in year one and year fifteen.

Natural stone — marble, limestone, or slate — is a legitimate choice for clients who want the specific character of a natural material. The trade-off is maintenance: natural stone is porous and requires regular sealing to resist staining. In a primary bathroom used daily, that maintenance burden accumulates.

For standalone drop-in basins rather than integrated tops, ceramic opens up more options — particularly decorative and hand-crafted pieces where the basin is a design feature in its own right. Lave specialises in integrated sintered stone; for standalone decorative basins, other suppliers are better placed.

Step 4: Stone Finish and Carcass Veneer

Stone finish affects both aesthetics and day-to-day appearance in use. Polished finishes are highly reflective and show watermarks and fingerprints clearly. Matte and honed finishes diffuse light, are more forgiving of daily use, and tend to age more gracefully in a bathroom environment. Structured finishes — with a subtle surface relief — offer a middle ground that has particular appeal alongside natural timber.

Carcass veneer should be chosen in relation to the wider room rather than in isolation. Oak reads warm and natural; walnut reads richer and darker; smoked or fumed finishes read more contemporary. All of these work with sintered stone, but they produce different effects under different lighting conditions. If possible, view samples under the actual light conditions of the room before making a final decision.

Step 5: Lead Times and Installation

A bespoke vanity unit is almost always on the critical path of a bathroom renovation. It cannot be expedited the way a standard product can, and a delay to the vanity delays everything that follows — tiling around it, fitting the taps, completing the room.

Lead times for bespoke vanity units from specialist suppliers run from five to twelve weeks. Lave Studio works on five to twelve week lead times from sign-off on the brief. Factor this into your programme at the start of the project, not when the rest of the room is ready and waiting.

On installation: a large floating sintered stone vanity is not a job for a general builder working from a set of photographs. Most specialist suppliers either install directly or provide detailed technical drawings for a trusted installer. Confirm this arrangement at the point of order. The drawings should show fixing positions, wall preparation requirements, and clearances. If a supplier cannot provide them, treat that as a signal.