The 25%
Regulation 44 of the Development Control and Promotion Regulations 2034 requires, for residential buildings, visitor parking equal to 25% of the stipulated car spaces, with a minimum of one. It is a higher loading than any other city in the Atlas — Pune asks 5%, Bengaluru 10%. A T-2 circular permits 5% in specified cases; which regime applies to a given plot has to be confirmed with the Building Proposal department.
Visitor spaces are non-allocatable. They cannot be sold or assigned to a flat, so they sit outside the developer's revenue and inside the developer's area.
Redevelopment is a separate table
Mumbai's regulations exist largely to make redevelopment work, and the parking rules follow. Schemes under Regulation 33 — cessed buildings (33(7)), slum rehabilitation (33(10)), MHADA layouts (33(5)), cluster redevelopment (33(9)) and the rest — carry relaxed norms, typically one car space per eight tenements up to 45 sqm against one per four on an open plot. The free-sale component may follow the open-plot norms, so a single redevelopment building can carry two parking standards.
Reading Table 21 rather than the summaries
Most guides in circulation still reproduce the 1991 Development Control Regulations' Table 15 — the hotel per-60-sqm and restaurant per-25-sqm figures come from there. DCPR 2034 restated the table as Table 21 under Regulation 44(2). In verifying the Atlas we found only the "one space per four tenements up to 45 sqm" band and the 25% visitor rule confirmed by two sources for DCPR 2034 itself; the remaining rows should be read from the compiled regulation before use.
Mechanical parking in Greater Mumbai
Parking may be in basements, podiums, stilts, upper floors or separate structures. A car space is reckoned at 25 sqm on the ground or stilt and 40 sqm in basements and podiums (ramps included) for area computation, and parking beyond the requirement is permitted on a premium tied to the Ready Reckoner — 25% of the land rate for the first quarter over, 50% for the next, 100% beyond. The Maharashtra Fire Service circular of July 2024 applies in full: podium 30 m, MLCP 45 m, automated towers to permissible height and never above 100 m.