Small bathroom design for Indian homes: to-scale 5x7 and 4x6 ft plans, wet and dry zones, Indian or western WC, basin sizes, exhaust fans and geyser safety, from BIS codes.
The best bathroom designs for small spaces in India put the shower at the far end behind a glass panel or curtain, give the WC its own floor trap for the health faucet, keep the basin by the door, and lift everything they can off the floor. A 5 x 7 ft bathroom fits a shower, a western WC and a basin within the clearances in the BIS code for sanitary layouts; a 4 x 6 ft one works best as a wet room with an Indian WC.
About the numbers below: sizes and clearances come from BIS codes and MoHUA's Model Building Bye-Laws 2016, which your city adapts. Product sizes and prices are from makers' pages read on 21 Oct 2026 (MRP including taxes, product only). "Guidance" marks MOA's judgement where no code gives a number.
For styles, colours and fittings see our bathroom trends for 2027; for tiles, tile trends 2027; for placement by direction, Vastu for bathrooms and toilets.
The Model Building Bye-Laws 2016 (clause 4.5.2) set a combined bath and WC at no less than 2.8 m² and 1.2 m wide, a bathroom alone at 1.8 m² and a WC alone at 1.1 m². Here is how the three common Indian sizes compare:
| Size | Area | What fits well | Against the bye-law |
|---|---|---|---|
| 4 x 6 ft (1219 x 1829 mm) | 2.23 m² (24 sq ft) | Indian WC, bucket bath, small basin, as one wet room | Enough for a bathroom or a WC alone; under 2.8 m² for both |
| 5 x 7 ft (1524 x 2134 mm) | 3.25 m² (35 sq ft) | Shower, western WC and basin, on opposite walls | Clears 2.8 m² |
| 5 x 8 ft (1524 x 2438 mm) | 3.72 m² (40 sq ft) | Shower, WC and basin in a row on one wall | Clears 2.8 m² |
For comparison, the "typical toilet layout" in IS 2064: 1993 (Fig. 3) fits an Indian WC, a basin and a shower into 2400 x 1200 mm, roughly 8 x 4 ft.
Arrange the room from the door inwards: dry (basin, storage), then semi-wet (WC and health faucet), then wet (shower). The questions in a small room are how to divide them and how the floor drains.
IS 2064 wants the door at least 700 mm wide, swinging away from the shower and clear of anyone at a fixture, and notes it "may swing outside for small bath rooms". An outward door leaves the floor inside free of its swing (guidance).
A fixed glass panel with an opening needs no swing space, which suits a 5 ft wide room (guidance). Jaquar's shower enclosure page notes that toughened safety glass breaks into small, blunt pieces, that framed enclosures seal better than frameless ones, and that its profiles take up 15 mm of uneven wall. IS 2064 lists a shower curtain rod as optional. A curtain suits a 4 x 6 ft room that gets wet anyway (guidance).
The bye-laws ask for an impervious floor "sloping towards the drain with a suitable grade", never towards another room, and leave the grade to the designer. IS 2064 (clause 7.4) says a sunken bath floor should be no more than 60 to 70 mm below the rest. We found no Indian code that fixes the gradient; as common practice (our guidance), about 1 in 100 across the dry area and steeper, around 1 in 50 to 1 in 60, inside the shower. A linear drain lets the shower floor fall one way. IS 2064 asks for non-skid floors; slip ratings are explained in our tile trends post, and the layers underneath in our waterproofing guide.
Table 1 of IS 2064 gives two figures for each clearance, a minimum and an "adequate" one. In the plan above:
With an 800 mm shower, a WC centred 460 mm from the glass and IS 2064's 360 mm "adequate" gap from the WC's centre line to the side of a 450 mm basin, the basin's centre lands about 590 mm from the door wall, above the code's 560 mm "adequate" figure (our arithmetic). In 7 ft the same row leaves under 300 mm, which is why the 5 x 7 plan moves the basin across the room. One plumbing wall also means simpler pipework (guidance).
At 2.23 m², a 4 x 6 ft room is common in older homes but falls short of the 2.8 m² the model bye-laws ask for a combined bath and WC, so check your city's rules before building one new. IS 2556 (Part 3): 2004 lists squatting pans in a long pattern of 580 or 630 mm and an Orissa pattern of 580 x 440 or 630 x 450 mm. IS 2064 draws the Indian WC with a tap 250 mm above the floor beside the pan. Use one floor trap at the curtain line, slope the whole floor to it, and keep the geyser high above the door. If a basin will not fit, put it just outside the door (guidance).
IS 2064 draws an Indian WC compartment at 900 x 1200 mm and a western one at 900 x 1500 mm, so the squatting pan saves about 300 mm of length. The code notes that squatting pans are very common, while western seats suit users with arthritis or similar conditions. Today the WC tap is usually a health faucet beside the seat; Jaquar's basic ALD-CHR-587 hand shower lists at ₹1,275 with a 1 m flexible tube. Water from it is why the WC zone needs its own floor trap.
A wall-hung WC keeps the floor under it free to mop. Jaquar's rimless wall-hung WC is listed at 375 x 520 x 360 mm and ₹13,100. Its slim concealed cistern with floor frame (₹10,325, flush plate sold separately) has an 80 mm thick tank body, legs adjustable from 0 to 200 mm and a frame tested to 400 kg, per its product sheet. A half-brick wall cannot hide that, so plan a ledge or false wall about 150 mm deep, which doubles as a shelf (guidance).
IS 2556 (Part 4): 2004 lists flat-back wash basins of 660 x 460, 630 x 450, 550 x 400 and 450 x 300 mm, and corner (angle-back) basins of 600 x 480 and 400 x 400 mm. For a 4 x 6 ft room, the 450 x 300 or the 400 x 400 corner basin is the realistic pick. IS 2064 asks for at least 510 mm (560 mm adequate) from a basin's centre to a side wall and 760 mm (900 mm adequate) from its front edge to the opposite wall. Its typical drawing puts the rim at 800 to 1000 mm; a counter of 400 to 450 mm deep fits a 5 ft wide room (guidance).
IS 2064 calls a mirror cabinet over the basin "common practice", and asks for a mirror of at least 0.20 m², no side under 450 mm, lower edge at least 1200 mm up. In a small bathroom, use:
The bye-laws ask for a window or ventilator of at least 0.3 m²; our trends post covers shaft sizes. For the fan, the US-based Home Ventilating Institute's consumer guide recommends about 1 CFM per sq ft of floor, at least 50 CFM for bathrooms of 50 sq ft or less, 1.0 sone or less for quiet running, and placing the fan over or near the shower. 50 CFM is about 85 m³/h (our conversion). Indian fans are rated in m³/h: Havells' 150 mm Ventilair DX lists 280 m³/h at 40 dB, MRP ₹2,630. That is ample for a 5 x 7 room on paper; position and make-up air matter more. Mount it high on the outer wall, away from the door, with a gap under the door or a louvre for air to come in (guidance).
The wiring code, IS 732: 1989 (clause 5.1.6.1; BIS has since revised it), says a room with a fixed bath or shower should have no socket outlets except shaver supply units, switches out of reach of anyone using it, and insulated or enclosed lampholders within 2.5 m of it. A BIS note on residual current devices says regulation 44 of the CEA's 2023 safety regulations mandates an RCD, which trips at a threshold typically of 30 mA.
A. O. Smith's manual for its Elegance Slim Neo geyser says not to install it where water splashes on it, to use an independent socket with no adapters, to earth it reliably (never to the neutral or a water pipe), and never to block its safety valve, which may drip. So:
| Item (example) | MRP, incl. taxes |
|---|---|
| Wall-hung WC, Jaquar Solo SLS-6953 | ₹13,100 |
| Concealed cistern with floor frame, Jaquar JCS-WHT-2400FP (no flush plate) | ₹10,325 |
| Health faucet, Jaquar ALD-CHR-587 | ₹1,275 |
| 150 mm exhaust fan, Havells Ventilair DX | ₹2,630 |
These are single-brand list prices for the product alone; shops often sell below MRP. We found no official list price for an Indian pan. For a whole-bathroom budget, try MOA's free home cost calculator.
Yes. A 1524 x 800 mm shower at the far end, a WC on one side wall and a basin on the other fit IS 2064's clearances, and 3.25 m² clears the bye-law minimum of 2.8 m².
An Indian pan takes less room (IS 2064 draws 900 x 1200 mm against 900 x 1500 mm) and lets you wash the floor down. A western seat suits elderly users; a wall-hung one narrows the gap.
Use a curtain on a rod, a low kerb or a step-down of no more than 60 to 70 mm (IS 2064), and give the shower its own drain.
HVI suggests at least 50 CFM (about 85 m³/h) for a bathroom of 50 sq ft or less. Havells' 150 mm Ventilair DX, for example, is rated at 280 m³/h; place the fan high, over or near the shower.
High on a wall outside the spray, on an RCD-protected circuit. In a 4 x 6 ft room, above the door is often the only dry spot.
Planning a small bathroom? Find an interior designer on MOA and filter by your city, or an architect if walls or drains are moving.