Banquette seating dimensions for restaurants

The seat height, depth, back height and table overhang that make fixed seating comfortable, how a banquette is built, and the fire, wear and hygiene standards it has to meet.

Why restaurants fix their seating

A banquette — a run of upholstered seating fixed to the wall or the floor, with loose chairs opposite — seats more people per metre than any other arrangement, because nobody needs an aisle behind it. It defines the edge of a dining room, hides services and structure, and gives the room the upholstered warmth guests read as "restaurant" rather than "canteen". Booths, which are banquettes facing each other across a table, take that further by giving each party its own room within the room. The cost is flexibility: a fixed run cannot be reconfigured for a party of twelve, and it is built for one table layout. This guide gives the dimensions that make a banquette comfortable, the choices in its construction, and the standards it should meet. Where to put it and how far apart the tables go is in the spacing and layout guide.

The dimensions that make it comfortable

These are contract-furniture conventions rather than British Standards, but they are consistent across the trade and any manufacturer will recognise them.

Two of these figures do the most work. The table overhang is the one most often got wrong: a table whose edge stops short of the seat forces the diner to perch forward, which is uncomfortable and looks it. The seat height should be checked with the cushion compressed, because a deep foam seat that measures 480 mm empty may sit at 430 under a diner, at which point the table is too high for them.

How a banquette is built

A fixed seat is a timber or metal carcass with a sprung or foam seat, an upholstered back, and either a plinth to the floor or exposed legs. The choices that matter are:

• Full build or cushions to your carcass. A specialist will either build the whole bench, or upholster seat and back pads to fit joinery that a shopfitter builds on site. The second route suits a fitted scheme where the joinery is running along the wall anyway; the first is simpler to warrant.^[1]
• Back style. Plain, fluted, buttoned, bolster and curved backs, with or without a head roll at the top, are the standard options; each changes the look more than the comfort, though a deep-buttoned back is harder to clean than a plain one.^[1]
• Straight, curved or booth. Curved runs suit a corner or a bay; booths need a table fixed between them and a way for the diner on the inside to get out.
• Storage. A lift-up seat or an outside-back cupboard turns dead space into a home for high chairs and linen.^[1]
• Height variants. Poseur-height banquettes (seat around 750 mm) exist for bar zones; the same principles apply at the higher level.^[1]

Whatever the form, the manufacturer works from CAD drawings or a site survey, and the survey matters: walls are rarely straight, skirting and sockets get in the way, and a banquette made to the architect's plan rather than the built room is the most expensive mistake in the section.

Accessibility

A banquette is fixed, so a wheelchair user cannot use it — they use the loose-chair side of the table, which means the table needs a clear knee space at least 700 mm high beneath it on that side and a route of at least 1200 mm to reach it.^[2][3] The banquette's own seat height of 450–480 mm is exactly the range accessible-design guidance asks for in public seating, so the bench itself suits older and less mobile diners well, and its back gives the support a loose chair may not; a run with an armrest or a return at the end is easier to rise from.^[4] Make sure at least some banquette tables are on the accessible route rather than up a step or in a raised bay.

Fire, wear and hygiene

Fire. Every upholstered seat in a restaurant must meet BS 7176, and FIRA's contract guidance places hotels and restaurants in the medium hazard category: the fabric-and-foam composite passes the cigarette, match and Crib 5 tests.^[5][6][7] Ask for the composite certificate naming the fabric and foam that will actually be used, and allow around two weeks if a non-inherent fabric needs treating.

Wear. A banquette seat is a severe-contract position — it is slid across, sat on in outdoor coats and wiped down daily — so specify a cover with a Martindale result of 40,000 rubs or more, which in practice means leather, a coated fabric or a tightly woven contract plain on the seat, with a softer or patterned fabric confined to the back and outside back.^[8] The full fabric and leather specification is in the lounge seating guide.

Hygiene. Food hygiene inspection looks at whether surfaces in food areas can be kept clean; banquette seats collect crumbs in the crease between seat and back and along the plinth, so specify a removable or lift-out seat, a wipeable seat cover and a toe-kick recess that a mop reaches.^[10] Fixed seating also affects escape: Approved Document B refers fixed-seating layouts to the spacing rules in BS 9999, and the gangways between rows of fixed seats count towards the escape-route widths, so the fire strategy should see the seating plan.^[9]

Common mistakes

• Table edge short of the seat. No overhang, diner perched forward. Specify 50–100 mm overhang on the drawings.
• Lounge-depth seats at a dining table. 550 mm deep with a soft back pushes the diner away from the plate.
• Ordered from the plan, not the survey. The run arrives 40 mm too long for the built alcove.
• Buttoned backs in a family restaurant. Beautiful, and a magnet for crumbs; plain or fluted cleans faster.
• No accessible table on the banquette run. Every banquette table in a raised bay means no wheelchair user sits there.
• A general-contract fabric on the seat. Bald and shiny within a year; 40,000+ rubs or leather on seats.

Specification checklist

• Seat 450–480 mm compressed, 450–500 mm deep; back 900–1200 mm overall (booths to 1600); 300 mm seat to table underside
• Table height 720–760 mm, overhanging the seat edge by 50–100 mm; 600–700 mm of run per diner
• Toe kick 80–100 mm; 800–1000 mm clear to the loose chairs; tables on the accessible route with 700 mm knee clearance on the chair side
• Full build or cushions-to-carcass decided; back style, storage and any curves on the drawings; site survey before manufacture
• BS 7176 medium hazard composite certificates; Martindale ≥40,000 or leather on seats
• Removable seats, wipeable covers, mop-accessible plinth; seating plan reviewed against the fire strategy

Frequently asked questions