Three things decide whether a South Delhi floor is actually comfortable to live in, and none of them appear in the listing: where the water really comes from, what the backup really runs, and whether the lift has a valid working licence. Each has a legal position behind it that most buyers never ask about — and each is cheap to check before you pay and expensive to discover afterwards.
Water: the Delhi Jal Board sanctions individual connections per dwelling unit or floor up to a maximum of ten in a property, and sanctions no connection for a basement. Where the building already has or needs a bulk connection, individual connections are not given. If a building runs partly on a borewell, that borewell needs prior permission — the DJB is the competent authority for groundwater across the whole of Delhi except the NDMC and Delhi Cantonment areas, and drawing without permission is illegal.
Power: what matters is the sanctioned load on the meter and exactly which circuits sit on backup. “Full backup” frequently means lights and fans. Diesel generator use in NCR is now regulated by the Commission for Air Quality Management, so a DG set is not a thing you can simply assume will run.
Lift: under the Bombay Lifts Act, 1939 as extended to Delhi and the Delhi Lift Rules, 1942, a passenger lift needs erection permission and then a licence to operate from the Electrical Inspectorate of the Delhi Labour Department. Ask to see it.
Almost every water complaint in a South Delhi builder floor traces back to one of three things: the building is on a bulk connection and the internal distribution is poor; the building supplements piped supply with a borewell whose legal position nobody has checked; or the floor is at the top of the stack and the pump and tank arrangement was sized for three floors rather than four.
The DJB’s published conditions for a new water and sewer connection are worth reading before you take anyone’s word for it. The ones that matter on a builder floor:
So the first thing to establish is simple: is there a connection in the name of your floor, or is the building on a bulk connection with internal sharing? Both are legitimate. They behave very differently when there is a dispute between floors, and they bill very differently.
Many South Delhi buildings run on a mix of piped supply and groundwater. The legal position is unambiguous and tightening. Under the standard operating procedure of the Government of NCT of Delhi, drawing groundwater through a borewell or tubewell for domestic, commercial, agricultural or industrial use without prior permission of the competent authority is illegal and without authority of law. The competent authority is the Delhi Jal Board for the entire NCT of Delhi, except areas under the New Delhi Municipal Council and the Delhi Cantonment Board. The DJB grants borewell permission after approval of its advisory committee.
Enforcement is real and it is court-driven. In filings before the National Green Tribunal, the DJB reported having identified 19,661 illegal borewells, of which 7,248 had been closed down by district authorities, with later reporting putting the number of identified illegal borewells or sites at 20,625. The division of labour is set out plainly: the DJB identifies, the SDM seals, and the Delhi Pollution Control Committee imposes environmental compensation. Where a borewell is under construction, the drilling rig itself is sealed.
If the building you are buying into relies on a borewell, ask for the DJB permission. If there is none, you are buying into a water supply that can be sealed, and the cost of that falls on the residents, not on the builder who has already sold and left. This is not a theoretical risk in a city that, on Central Ground Water Board figures cited to the NGT, extracted 100.7% of its groundwater in 2024.
Rooftop rainwater harvesting has been mandatory in Delhi for plots of 100 square metres and above under the building bye-laws, following a notification dated 28 July 2001, and the requirement sits in Chapter 10 of the Unified Building Bye-laws for Delhi, 2016. Civic agencies are meant to check it before issuing the occupancy-cum-completion certificate. Two things follow for an owner:
Since 100 square metres is about 120 square yards, essentially every South Delhi builder-floor plot is over the line. On the walkthrough, find the recharge pit. “It’s there somewhere” is the answer you get when it was drawn on the plan and never built.
While you are at it: the DJB runs enforcement drives against water misuse, with teams deployed to fine wastage — washing a car with a running hose and overflowing tanks among the targets. An overflow pipe that discharges onto the street is a snag worth fixing on handover rather than a habit worth inheriting. Our handover snag list covers the plumbing checks in detail.
South Delhi’s supply is reliable by Indian standards and the grid is not usually the problem. Two other things are.
The number on your electricity connection is a ceiling, not a suggestion. A four-bedroom floor with five air conditioners, two geysers, an induction hob, an oven and a washer-dryer draws considerably more than the load that was sanctioned when the building was wired for a smaller brief. The symptoms are a main breaker that trips on a July evening and an electrician who tells you to run fewer ACs.
What to establish before you buy: the sanctioned load in kilowatts, whose name the connection is in, whether there are arrears, and whether the load can be enhanced — which is a request to the distribution company and may involve the cable and the meter box, not just paperwork. In most of South Delhi that discom is BSES Rajdhani. Enhancement costs are worth adding to your running-cost picture alongside the items in our full cost of buying guide.
Builder floors in South Delhi almost always have an inverter rather than a generator, and “full power backup” in a listing most often means a battery inverter wired to lights, fans and a few sockets. That is perfectly adequate for a two-hour cut and completely inadequate for running an air conditioner. Get specific:
| Arrangement | What it typically runs | What to check |
|---|---|---|
| Battery inverter | Lights, fans, TV, wifi, a few sockets. Not air conditioning, not geysers, not the lift. | Capacity, battery age and type, which circuits are on it, where the batteries sit and whether that space is ventilated. |
| Inverter plus one AC circuit | The above, plus one inverter-type air conditioner for a limited run. | Which room. Confirm by switching the main off and watching what stays alive. |
| Diesel generator for the building | Common areas and the lift, sometimes a limited load per floor. | Whose asset it is, who pays for diesel and servicing, where it is sited relative to bedrooms — and its compliance position under the CAQM rules below. |
The only reliable test is the one nobody does: ask for the main supply to be switched off and see what keeps working. Do it on the walkthrough. It takes two minutes and it settles the question permanently.
The Commission for Air Quality Management has directed a revised schedule for the regulated operation of DG sets across all sectors in the NCR, residential included. Broadly, a DG set has to be converted to run on dual fuel (gas and diesel) and, depending on its capacity, fitted with a retrofitted emission control device; the Commission has made clear that without that, use is not permitted anywhere in NCR — and during periods when the Graded Response Action Plan is in force, operation of compliant sets is further restricted. The schedule and the capacity bands have been revised more than once, so check the current CAQM direction rather than assume. If a building is selling you generator backup, ask what its compliance position is. Our guide to air pollution and your South Delhi home sets out how GRAP works.
A lift in a four-storey builder floor is not a convenience, it is the difference between a second-floor flat and a top-floor flat in resale terms. It is also the one piece of equipment in the building governed by its own licensing regime, which buyers routinely do not know exists.
The Electrical Inspectorate of the Labour Department, Government of NCT of Delhi, enforces the Bombay Lifts Act, 1939 as extended to the National Capital Territory of Delhi, and the Delhi Lift Rules, 1942. The sequence works like this:
After the building structure is complete, the owner or occupier applies to the Inspector of Lifts in the prescribed form, with drawings of the lift shaft, machine room and car. The Inspector inspects the site and, if it meets the requirements, issues permission to erect.
The erection has to follow the sanctioned drawings and the Act and Rules. The Inspectorate also licenses electrical contractors, so who did the work is a matter of record rather than of trust.
On completion the owner or occupier intimates the Inspector of Lifts in the prescribed form with the inspection fee. The Inspector inspects, and if satisfied that the Act, the Rules and the relevant Indian Standard are complied with, issues the licence for working of the lift. Buildings maintained by the Public Works Department and the Military Engineer Services are excepted.
The Inspectorate’s published services include periodical inspection of lifts, and a 2017 amendment to the Delhi Lift Rules brought in annual safety testing and certification by an authorised person. A licence is a live document, not a one-off.
“Can I see the lift’s working licence and the last inspection or safety certificate?” If the answer is a blank look, you have learned something about how the building is run — and you have an item for the snag list rather than a surprise in year three, when a licence has to be put right before anything else can be.
Buyers underwrite finishes and ignore services, then spend the first year fixing services. In our experience the utilities picture moves value in three specific ways.
A top floor without a working lift sells at a discount, and the discount is larger than the cost of putting the lift right — which makes a building with a lift problem an opportunity if you have the appetite to solve it, and a trap if you do not. The same logic runs through the position premiums in our guide to corner, park-facing and main-road floors: the market prices the thing it can see.
A building on an unpermitted borewell carries a contingent liability that does not appear anywhere in the paperwork. It does not usually change the price, because buyers do not ask. It should.
A low sanctioned load is a renovation cost, not a quirk. If you are planning to add air conditioning to every room, establish the load position before you negotiate rather than after you have signed.
No. The Delhi Jal Board’s conditions state that no water connection will be sanctioned for the basement of any building. If a basement unit is being presented to you as a self-contained dwelling with its own supply, ask how the water actually reaches it before you go further.
Only with prior permission. Under the Delhi government’s standard operating procedure, drawing groundwater through a borewell or tubewell for domestic, commercial, agricultural or industrial use without the prior permission of the competent authority is illegal and without authority of law. The competent authority is the Delhi Jal Board for the whole of the NCT of Delhi except the NDMC and Delhi Cantonment Board areas. Ask to see the permission.
On the process reported to the National Green Tribunal, the Delhi Jal Board identifies the borewell, the concerned SDM seals it, and the Delhi Pollution Control Committee imposes environmental compensation. Where a borewell is still being drilled, the rig is also sealed. DJB has reported identifying tens of thousands of illegal borewells, with thousands already closed.
Rooftop rainwater harvesting has been mandatory for plots of 100 square metres and above under Delhi’s building bye-laws, and the requirement sits in Chapter 10 of the Unified Building Bye-laws for Delhi, 2016. The DJB offers a 10 per cent water-bill rebate at that plot size and levies a penalty on plots of 500 square metres or more without a functional system. Since 100 square metres is about 120 square yards, almost every South Delhi plot is above the threshold.
In practice, a battery inverter wired to lights, fans, television, wifi and a few sockets — not air conditioning, geysers or the lift. The only way to know is to ask for the main supply to be switched off during the walkthrough and see what stays alive, and for how long.
Only within the rules. The Commission for Air Quality Management has directed a revised schedule for regulated operation of DG sets across all sectors in NCR including residential, built around conversion to dual-fuel operation and retro-fitment of emission control devices, without which the Commission has said use is not permitted anywhere in NCR. Operation is further restricted while GRAP is in force. The bands and schedule have been revised, so confirm the current direction.
Yes. Under the Bombay Lifts Act, 1939 as extended to Delhi and the Delhi Lift Rules, 1942, a passenger lift requires erection permission before installation and then a licence for working of the lift, issued by the Electrical Inspectorate of the Delhi Labour Department after inspection. Buildings maintained by the PWD and the Military Engineer Services are excepted. The Inspectorate also carries out periodical inspections, so the licence is a live document.
We know which buildings in these colonies have real backup, honest water and a licensed lift — and which have a listing that says so.
Sources: the Delhi Jal Board’s published conditions for water and sewer connections for the ten-connection cap, the bulk-connection rule and the basement exclusion; the DJB board decision raising the cap from six to ten; the Government of NCT of Delhi standard operating procedure on illegal borewells and the DJB’s own figures, as filed before the National Green Tribunal (DJB report in EA No. 11 of 2023 and the DPCC action-taken report in OA No. 144 of 2025, which also carries the CGWB extraction figure); the DJB status note on rainwater harvesting for the 100 sq m mandate, the rebate and the 500 sq m penalty; the CAQM directions on regulated operation of DG sets in NCR; and the Electrical Inspectorate, Labour Department, GNCTD for the Bombay Lifts Act as extended to Delhi, the Delhi Lift Rules, 1942, and its lift erection-permission and inspection services. The 100 sq m to 120 sq yd conversion is ours. Figures reported in court filings are as at the date of those filings. Rules in this area change; confirm the current position before acting.
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