Multi-Storey Stacking & Building Codes
A plan has a third dimension. This chapter says what the engine flags when rooms are stacked across floors, and where a Vāstu preference meets the codes that bind a building — with the edition of each code, the dates it applies to, and how much of it the engine has actually read.
1. What is flagged when rooms stack
The engine flags one family of stacking: a toilet or septic tank directly above a room of worship, of cooking or of rest. “Directly above” means the two footprints share floor area, more than 1% of the smaller room, so two rooms crossing like a plus sign are caught although neither has a corner inside the other. The rule corpus holds no located verse for it, and the reference does not present it as classical; it is a modern rule of practice, and a wet room over a kitchen or a bedroom is a leak and hygiene risk that building practice avoids for its own reasons.
| On the upper floor | Directly below | Flagged as |
|---|---|---|
| Toilet or septic tank | Puja room | Critical |
| Toilet or septic tank | Kitchen | Critical |
| Toilet or septic tank | Master, children's or guest bedroom, or dining room | Moderate |
2. Beside the building codes
The National Building Code is a model code: it binds a building only as state and local bye-laws adopt it, and the bye-laws and development control regulations are what a sanctioning authority applies. A code is also dated. Below are the editions the engine holds, each with the status it carries.
Checked against the minimum sizes recorded here for this jurisdiction and date; not a building-permit review and not a substitute for the sanctioning authority's own scrutiny.
National Building Code of India 2016 (SP 7:2016), Volume 1, Part 3 'Development Control Rules and General Building Requirements'
IN-NBCBureau of Indian Standards · In force until 30 April 2026; the date it took effect is not recorded
India — National Building Code of India (Bureau of Indian Standards, SP 7): a model code that binds as state and local bye-laws adopt it
NBC 2016 was withdrawn on 30 April 2026 and superseded by SP 7:2026, 'National Building Construction Standards 2026' (Gazette of India, Extraordinary, Part III—Section 4, No. 299, 30 April 2026, CG-DL-E-30042026-272177; the BIS sales listing shows SP 7:2016 'withdrawn', superseded by SP 7 Volume 1 and 2 : 2026). Its rules here apply only to dates before the withdrawal; the date the 2016 edition took effect is not recorded. Many state and local bye-laws still reproduce these figures, but they bind only as those bye-laws adopt them.
23 of 23 recorded rules were read in the published text. Where it was read (National Building Code of India 2016 (SP 7:2016), Volume 1, Part 3 'Development Control Rules and General Building Requirements')
National Building Construction Standards 2026 (SP 7:2026)
IN-NBCBureau of Indian Standards · In force from 30 April 2026
India — National Building Code of India (Bureau of Indian Standards, SP 7): a model code that binds as state and local bye-laws adopt it
No room-size rule is recorded for SP 7:2026. The research for this table read, in a BIS-watermarked copy (https://assets.zyrosite.com/YrD4NvlEyBSO0Dxv/nbcc-mreged_compressed-MqMZqVSWzKp7BQ6y.pdf, not re-opened for this table), that its foreword leaves development control rules and space utilization to state and local government and that its Part A leaves 'essential habitable sizes/ heights' to the state/local authorities. Room minimums after 30 April 2026 are therefore a matter for state and local bye-laws such as IN-MH-UDCPR; re-verify this edition before recording any rule from it.
No rule is recorded from this edition. Where it was read (National Building Construction Standards 2026 (SP 7:2026))
Unified Development Control and Promotion Regulations for Maharashtra (UDCPR-2020), consolidated to 30 January 2025
IN-MH-UDCPRUrban Development Department, Government of Maharashtra · In force from 2 December 2020
Maharashtra — Unified Development Control and Promotion Regulations (UDCPR-2020), outside the areas its clause 1.1(i) excludes
Sanctioned by Notification No. TPS-1818/C.R.236/18/DP&RP/Sec.37(1AA)(c) & Sec.20(4)/UD-13 dated 2 December 2020; the rules here are dated from that notification (a separate commencement date was not recorded). UDCPR applies across Maharashtra except the areas its clause 1.1(i) excludes, among them the Municipal Corporation of Greater Mumbai, MIDC, NAINA, JNPT and hill-station municipal councils. Clauses 9.2.1 and 9.3.1 leave the size of habitable rooms and kitchens 'as per requirement and convenience of the owner', so no size rule is recorded for them.
9 of 9 recorded rules were read in the published text. Where it was read (Unified Development Control and Promotion Regulations for Maharashtra (UDCPR-2020), consolidated to 30 January 2025)
3. Where a Vāstu preference and a code can conflict
- Open space kept larger on the north and east against the minimum setback required on every side.
- A closed south-west against the opening ratios a code requires and a bathroom's need for an external wall.
- A septic tank in the north-west or a well in the north-east against the distances a code asks between them and a building on a small plot.
- The position of a staircase against the exits and travel distances a code requires.
- A raised threshold against a step-free access route.
Where they conflict, the code governs. A suggestion in a reading is subject to the sanctioned plan and the bye-laws, and structural work needs a licensed architect or engineer and the authority’s approval.