Vastu for a 4 BHK flat: rooms, zones and who sleeps where

A 4 BHK usually adds a fourth bedroom, a third toilet and sometimes a study or a servant room. Those rooms are already built where they are. What you choose is who uses which room, and what each room is used for.

That choice is worth something because the rule table rates rooms by type. A room in the north-east is rated good for a study in both schools, but as a master bedroom it is rated avoid, 2 of 5 in the 16-zone school and 3 of 5 in the 8-direction school [1]. Using that room as a study instead of the master bedroom changes the reading without moving a wall.

The National Building Code 2016 sets the minimum sizes behind these rooms: a habitable room of at least 9.5 square metres, and a second room of at least 7.5 (Part 3, cl. 12.2.2) [2]. In a 4 BHK the smallest bedroom is often the one to turn into a study.

Measure each bedroom's zone from the centre of the flat. A room takes the zone that holds most of its area [1].

The schools disagree on SSW and WNW. The 16-zone school rates a master bedroom in either avoid, 3 of 5, while in the 8-direction school SSW falls in S or SW, both rated good, and WNW falls in W (good) or NW (neutral). Our bedroom readings page shows every zone.

The texts say little about who sleeps where. The Manasara (XXXVI.37) names the Satyaka and Antariksha quarters for bedrooms [3], and in the Vishwakarma Prakash the editor restores a line placing sleeping rooms in the south, from other works (2.94 to 97) [4]. Vastu16's guidance adds one practical step for every bedroom: place the bed so the head points south or east [1].

Three toilets fit the 16-zone school neatly, because it rates exactly three zones good for a toilet: SSW, WNW and ESE [1]. The 8-direction school rates NW and W good.

West is a clear disagreement: good for a toilet in the 8-direction school, avoid 2 of 5 in the 16-zone school. Check every toilet, including attached ones and the one in the servant room. Every bathroom or WC needs at least one wall open to external air and a window or ventilator of at least 0.3 sq m opening to a shaft or open space, and a WC must not open straight into the kitchen (NBC Part 3, cl. 12.4) [2]. Our toilet readings page has the full list.

Study. The 16-zone school rates WSW, NE, E and W good, and ESE, SSW and WNW avoid, 2 of 5. The 8-direction school rates NE, E, N and W good [1]. The Vishwakarma Prakash places a study between the south-west and the west (2.94 to 97) [4].

Pooja. The 16-zone school rates NE, ENE, E and W good, and SSW, ESE and WNW avoid, 3 of 5. The 8-direction school rates NE, E and N good, and S and SW avoid, 3 of 5 [1]. If no room fits, a movable prayer unit in the north-east part of the living room is the low-cost option.

Servant room. Vastu16's table has no rule for a servant room, so the check does not score it. What follows is practical, not a rule: it usually sits near the kitchen or a service entrance, often with its own toilet, and that toilet is scored like any other.

The layout here is illustrative, not a real flat. Bearings are measured from the centre with verified North; readings come from Vastu16's rule table [1].

Each school starts at 100 and loses 4 points per severity point of each avoid reading [1]. Here the 16-zone school scores 92 and the 8-direction school 100, so the combined score is 96. The one finding is bedroom 4. The parents take the master bedroom, the children take bedrooms 2 and 3, and bedroom 4 becomes the guest room, used least, with the bed head turned south or east.

Tradition

• Bedrooms in the Satyaka and Antariksha quarters: Manasara XXXVI.37 [3].
• Study between south-west and west; sleeping rooms in the south (editor's restoration): Vishwakarma Prakash 2.94 to 97 [4].
• Zone ratings, severities and bed guidance: Vastu16's rule table, a draft pending consultant review [1].

Physical fact

• Minimum habitable room sizes of 9.5 and 7.5 square metres: NBC 2016 Part 3, cl. 12.2.2 [2].
• Every bathroom or WC needs an opening to air, and no WC opens into a kitchen: NBC 2016 Part 3, cl. 12.4 [2].

Our free tool lets you score all four bedrooms and every toilet under both schools. You upload the plan, tag each room, verify North, and it shows every room's zone, both readings and where the schools disagree. It does not decide who sleeps where; that stays with your family. For what else applies to flats, see our page on Vastu for a flat.