Illegal Construction Complaint Guide — Municipal + High Court

Unauthorised construction — extra floors, deviation from the sanctioned plan, encroachment on setbacks, building without permission — is a civic offence governed primarily by state municipal law and building bye-laws. The enforcement route is the municipal corporation or development authority (which has statutory power to issue stop-work and demolition orders), supported by RTI to force disclosure of the sanctioned plan, RERA where a registered builder is involved, and the High Court under Article 226 for systemic violations. This page sets out each step.

To complain about illegal construction in India: (1) photograph the construction with a GPS pin; (2) file with the municipal corporation Town Planning department (BBMP Bengaluru, MCGM Mumbai, MCD Delhi, GHMC Hyderabad) — it has statutory power to issue stop-work and demolition orders under the state Municipal Act and Building Bye-laws; (3) obtain the sanctioned plan through RTI under §6(1) RTI Act 2005; (4) for a RERA-registered builder's project, file before state RERA; (5) where a builder has fraudulently sold unauthorised flats, an FIR under BNS, 2023 §318 (cheating) lies — but the construction offence itself is municipal, not a BNS offence; (6) for systemic violation (multiple buildings, same area), file a High Court Article 226 writ / PIL; (7) where environmental clearance or a coastal/forest zone is involved, approach the NGT.

• What counts as illegal construction
• Statutory framework + Building Bye-laws
• The complaint escalation
• Sanctioned plan + RTI verification
• High Court Article 226 + PIL
• Sample complaint + writ
• Filing an RTI to the municipal corporation
• FAQ
• Myth vs reality

• Construction without a sanctioned plan / permit.
• Deviation from the sanctioned plan (extra floors, larger area, different layout).
• Encroachment on setbacks (margin distances).
• Encroachment on common access / parking.
• Construction in non-permitted zones (residential vs commercial vs industrial vs green).
• Built-up area exceeding the FAR (Floor Area Ratio) / FSI (Floor Space Index).
• Below-ground construction (basement) without permission.
• Cantilever / overhanging structures beyond the plot boundary.
• Roof additions / mezzanine floors without permission.
• Conversion of residential to commercial use without conversion fee and plan approval.
• Construction in heritage, coastal regulation or forest zones.
• Construction during an NGT-imposed monsoon ban.

• Maharashtra Municipal Corporations Act, 1949 (Mumbai / MCGM).
• Delhi Municipal Corporation Act, 1957 (MCD — unified in 2022 by amendment).
• Karnataka Municipal Corporations Act, 1976 (BBMP).
• Greater Hyderabad Municipal Corporation Act, 1955 (GHMC).
• The corresponding state Town and Country Planning Act (e.g. Maharashtra Regional and Town Planning Act, 1966; Tamil Nadu Town and Country Planning Act, 1971) governs master plans and zoning.

These Acts give the corporation independent power to issue stop-work, show-cause and demolition notices — no court order is required to start enforcement.

Each municipal corporation publishes Building Bye-laws specifying setbacks, height limits, FAR/FSI, material standards, safety codes, and fire safety rules. They are available on the municipal corporation portal.

• MoEFCC Environmental Impact Assessment Notification, 2006 — clearance for projects above the notified thresholds.
• Coastal Regulation Zone (CRZ) Notification, 2019 — regulates construction in coastal zones.

The Real Estate (Regulation and Development) Act, 2016 applies to builder (promoter) projects above 500 sq m or more than 8 apartments (§3(2)). It does not govern a private owner's unauthorised extension. Where it applies, the promoter must register the project (§4); RERA can revoke registration for defaults (§7); and an allottee is entitled to refund and compensation for delay or structural defect (§18).

Penalties are set by each state's Municipal Act and Building Bye-laws and differ widely. They range from compounding fees for minor, regularisable deviations to demolition of the unauthorised portion, fines, and imprisonment for the owner, architect, engineer and contractor. Major deviations (extra floors, FAR breach) are generally not regularisable and attract demolition.

1. Day 0: Photograph + GPS + Google Maps pin.
2. Day 1: File on the city Town Planning portal and the ward office.
3. If no action: escalate to the Zonal/Deputy Commissioner, then the Commissioner and Mayor (in writing).
4. In parallel: file an RTI for the sanctioned plan] and complaint status.
5. If still no action: approach the High Court under Article 226 (and PIL if multiple buildings are involved); approach RERA for a registered builder project; approach the NGT if an environmental clearance or a coastal/forest zone is involved.

There is no fixed statutory timeline for municipal demolition — it varies by state and by the political complexity of the case. The High Court can, and does, direct the corporation to act within a fixed period.

The municipal-approved building plan. Available via RTI to Town Planning. It is the baseline against which actual construction is compared.

Each phase of construction requires permission. The occupancy certificate is issued only after compliance verification; without it, occupation is unlawful. The completion certificate confirms the building matches the sanctioned plan.

• The sanctioned plan (PDF).
• All permission letters issued.
• Inspection reports during construction.
• Occupancy / completion certificate status.
• Any complaints received and action taken on each.

For systemic illegal construction (multiple buildings, the same locality, a repeat violator), a petition before the High Court under Article 226 — against the State and the municipal corporation — is the fastest enforcement route. A single illegal building affecting the locality can also support a PIL.

• Photographs of each building.
• RTI replies from the municipal corporation.
• A pattern analysis (date, locality, repeat violator).
• Health, environment and safety implications for residents.

• Stop-work for the flagged buildings.
• Compulsory demolition within a fixed timeline.
• An administrative inquiry into negligent officials.
• Compensation where the corporation's inaction caused loss.

The Town Planning Officer
[Municipal Corporation Name]
[Address]

Sub: Complaint of unauthorised construction at [Address]

I, [Name], submit:

1. The property at [Address] (Plot/Survey No. _______)
   is undertaking unauthorised construction since DD-MM-2026.

2. Specific violations (Annexures A-F):
   (a) Cantilevered overhang above the public footpath
       (Annexure A — photographs).
   (b) ___ extra floors beyond the sanctioned plan
       (Annexure B — comparison with the RTI-obtained plan).
   (c) Setback encroachment on the east side
       (Annexure C — measurements).
   (d) Construction without a valid permit
       (Annexure D).
   (e) Damage to neighbouring properties
       (Annexure E).

3. RTI vide application no. _______ has been filed
   for the sanctioned plan and permissions.

I demand:
  (a) Immediate site visit and verification.
  (b) Stop-work order under [State Municipal Act].
  (c) Show-cause and demolition notice.
  (d) Penalty and cost recovery from the owner.
  (e) Disciplinary action against the negligent
      Building Inspector / Town Planning Officer.

Yours sincerely,
[Name, address, contact]

IN THE HIGH COURT OF [State]

WP(C) No. _________ of 2026

[Petitioner Name(s)]                        ... Petitioner

vs.

1. State of [State]                          ... Respondent
2. [Municipal Corporation Name]              ... Respondent
3. Building Owner (if private respondent)    ... Respondent

WRIT PETITION UNDER ARTICLE 226

The petitioner respectfully submits:

[Pleadings — facts, the statutory framework,
persistent inaction by the corporation,
public interest, and the prayer for direction.]

Documents annexed:
  Annexure A — photographs / videos
  Annexure B — sanctioned plan vs actual
  Annexure C — RTI replies
  Annexure D — complaints filed and responses
  Annexure E — affidavits

Verification: [Standard]

DD-MM-2026
[Petitioner Name(s)]

PIO, [Municipal Corporation]

Sub: Application under §6(1) RTI Act 2005

Please furnish in respect of the property at [Address]:

1. The sanctioned plan and permission letters issued
   for construction at this property in the last
   60 months.

2. Inspection reports during construction.

3. Occupancy certificate / completion certificate
   status.

4. Floor area as per the plan vs current built-up.

5. Number of complaints received against this
   property in the last 24 months and action
   taken on each.

6. Whether any stop-work / demolition order has
   been issued and its current status.

7. The Building Inspector / Town Planning Officer
   responsible for this ward.

A reply is requested under §7(1) within 30 days.

[Name, address, contact]
DD-MM-2026

Olga Tellis v. Bombay Municipal Corporation (1985) 3 SCC 545 — eviction of pavement dwellings must follow the procedure under the Bombay Municipal Corporation Act; due process applies. Esha Ekta Apartments Co-op. Society v. Municipal Corporation of Mumbai (Campa Cola Compound) — the Supreme Court (2013) 5 SCC 357 upheld the demolition of floors built beyond the sanctioned plan, confirming that long occupation does not legalise unauthorised construction.

• Your state Municipal Act and Building Bye-laws (on the municipal corporation portal).
• The Real Estate (Regulation and Development) Act, 2016 (indiacode.nic.in).
• MoEFCC EIA Notification, 2006 and CRZ Notification, 2019 (moef.gov.in / parivesh.nic.in).
• National Green Tribunal — greentribunal.gov.in.
• CPB 1908 — Order 39 Rule 1 (civil injunction) and BNS, 2023 — §318 (cheating).

Useful tool:

• AI RTI Drafter — draft the RTI for the sanctioned plan in minutes.
• RTI for the sanctioned plan] — what to ask and how.

Most municipal portals require registration. An RTI application must be filed by a named applicant.

Compounding (regularisation) is allowed for minor deviations under state rules, and only by a written municipal order. Major violations — extra floors, FAR breach — generally cannot be compounded.

Encroachment on government land triggers the Tahsildar / Revenue Inspector (and the Forest Department if forest land), who can order removal.

A civil suit (injunction and damages) plus a municipal complaint. Most state municipal Acts prohibit cantilever beyond the setback even over a neighbour's airspace.

Demand the builder rectify or refund. For a RERA-registered project, file before RERA (§18 — refund and compensation for defect/delay); otherwise the Consumer Commission. The unauthorised floors carry a demolition risk regardless.

Yes, under Article 226. The Campa Cola precedent and multiple High Court orders confirm this.

File RTI for the regularisation status and the decision date. Under §7(1) RTI Act 2005 the reply is due in 30 days.

For environmental violations (forest, coastal or ecologically sensitive zones), yes. NGT and High Court proceedings can run in parallel.

• RTI for the sanctioned plan]
• Encroachment complaint guide
• Illegal builder demands
• Bulldozer demolition: your 15-day notice rights set by the Supreme Court
• RTI Act 2005 — complete guide

Last reviewed: 17 July 2026.