HYDRAA and lake buffer zones: how to check a Hyderabad property's FTL risk before you buy
HYDRAA has been demolishing FTL and buffer-zone violations in Hyderabad since 2024. Here is how to check a property against HMDA lake maps before committing.
PropWatch Editorial7 min read
Properties with valid building permissions, issued by GHMC or HMDA, have been demolished in Hyderabad since late 2024. The agency doing the demolishing is HYDRAA — Hyderabad Disaster Response and Asset Protection Agency — and its mandate covers constructions in FTL (Full Tank Level) zones and buffer zones around the city's lakes and water bodies, regardless of whether building approvals were issued. For a buyer about to commit to a Hyderabad property, knowing whether a plot sits within one of these zones is now a pre-purchase necessity, not a post-purchase concern.
What FTL and buffer zones mean
The Full Tank Level of a lake or water body is the elevation at which the tank is full — essentially, the natural boundary of the water body under normal conditions. Constructing within the FTL is building inside the lake. The buffer zone is a no-construction belt beyond that boundary: 30 metres for lakes and tanks exceeding 10 hectares, and 9 metres for smaller water bodies and nalas, as prescribed under G.O. Ms. No. 168 of 2012 and the Telangana Building Rules 2012, per the LiveLaw/Kochhar analysis of HYDRAA's mandate.
NOCs from irrigation and revenue departments were issued over the years for some constructions that turned out to be in or near these zones. HYDRAA's demolition programme has proceeded in documented cases despite those prior permissions, according to reports by SANDRP (South Asia Network on Dams, Rivers & People) and other observers of the programme. Buyers cannot rely on a prior NOC as proof a property is outside FTL or buffer-zone risk.
HYDRAA — what it is and what it has done
HYDRAA was constituted by the Government of Telangana on 19 July 2024. Its mandate is to protect government assets from encroachment and to preserve lakes, water bodies and protected zones. According to reporting on the programme, HYDRAA had conducted demolitions across multiple locations in Hyderabad recovering substantial encroached land by early 2025.
The agency's stated policy is that residential structures built before July 2024 with valid government approvals will not be demolished. Commercial buildings in FTL or buffer zones face demolition regardless of construction date, per the same reporting. That protection for pre-2024 residences is not a statutory guarantee — it is an executive policy statement — and buyers should not treat it as permanent insulation from enforcement action.
How to check a property before buying
HMDA operates a dedicated lake maps portal at lakes.hmda.gov.in. A buyer can enter the district, mandal, village and lake name and get the FTL and buffer-zone boundaries in map form, along with the lake ID, FTL perimeter length and area. The map shows cadastral survey boundaries overlaid on FTL and buffer-zone markings.
- Go to lakes.hmda.gov.in and select the relevant district, mandal and village.
- Locate the nearest lake or tank to the property and confirm whether the survey number of the subject plot appears within or adjacent to the FTL or buffer-zone markings.
- Cross-check the survey number against the plot's title documents and the municipal records — seller-quoted survey numbers occasionally differ from the municipal record.
- Separately verify the GHMC building permission status on GHMC's online portal, confirming the permission exists and was not subsequently cancelled.
- For plots in layouts, verify that the layout itself has HMDA or DTCP approval and was not sanctioned before the FTL and buffer-zone restrictions were notified.
What to do if the map shows proximity
Proximity to the FTL or buffer zone on the HMDA map is a flag, not a definitive answer — cadastral maps and lake-boundary surveys do not always agree at the granular plot level. The appropriate response is to obtain a survey report from a licensed surveyor who can physically mark the FTL boundary relative to the plot. That is the document that holds weight if a regulatory dispute arises later.
If the property is within the buffer zone or FTL, consider whether the transaction makes sense at any price. The demolition risk is not a price discount that can be negotiated away. If the seller represents that the property is outside the restricted zone, that representation belongs in the sale agreement as a warranty, with consequences for misrepresentation. Verbal assurances on lake proximity have no legal effect.
The documents to scrutinise
- Survey sketch from the revenue department — confirm the survey number and boundaries
- GHMC or HMDA building permission — confirm it is not cancelled and the condition list does not flag lake proximity
- NOC from the Irrigation Department — its existence does not guarantee FTL compliance, but its absence is a further flag
- Layout approval from HMDA or DTCP — confirm it pre-dates, and was aware of, any lake notified in the vicinity
- HYDRAA demolition list (when publicly accessible) — check whether any structure in the same layout or survey number has been the subject of prior demolition action
SourceHMDA Lake Boundaries Portal — FTL and buffer-zone maps for Hyderabad water bodies
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