Illegal Construction Complaint For Residential Property

Here is a practical guide to illegal construction complaint for a residential property, written for owners, buyers and families in Delhi NCR and elsewhere in India. The firm of Advocate B.K. Singh handles this work from offices in Dwarka, New Delhi and Vaishali, Ghaziabad.

In short. To complain about illegal construction, write to the building authority for the area (MCD, DDA or NDMC in Delhi; Noida, Greater Noida or GDA in UP; the municipal corporation or DTCP in Haryana) with the address, photographs and the sanctioned plan if available. If the authority does nothing, a writ petition in the High Court can direct action; a neighbour suffering special harm can also sue for an injunction.

Illegal construction means building work done without a sanctioned plan, beyond what the plan allows, on land where building is not permitted, or in a way that breaks the building bye-laws: extra floors, covering setbacks, projections over public land, basements dug against rules, or residential buildings turned into shops, hotels or factories. It affects neighbours (light, air, structural safety, parking, water), buyers of flats in the building, banks who lend against it and the public at large.

An illegal construction complaint is the legal route to make the authority act, or to get a court to make it act. This page explains, as of October 2026, which authority to complain to in Delhi, Noida, Greater Noida, Ghaziabad and Gurugram, how to draft and file the complaint, what to do when nothing happens, when a civil suit or RERA complaint is the better route, and how the answer changes for residential, commercial, industrial and agricultural land. It is written for people making a complaint; if you have received a notice yourself, the remedies are different, and we point to them at the end.

Law

Delhi Municipal Corporation Act 1957 (sections 343, 344 and 345A); Delhi Development Act 1957; UP Urban Planning and Development Act 1973; UP Industrial Area Development Act 1976; Haryana municipal and urban development laws; RERA 2016, section 14; BNSS section 152; building bye-laws of each authority.

Where to complain

The building or enforcement department of the authority with jurisdiction: MCD, DDA, NDMC or Cantonment Board in Delhi; Noida, Greater Noida, YEIDA or GDA in UP; municipal corporation, HSVP or DTCP in Haryana.

When the authority fails

Writ petition under Article 226 in the High Court; civil suit by a neighbour with special injury; RERA complaint against a promoter's deviation; SDM under BNSS section 152 for public nuisance.

Time limits

No fixed limit for a complaint, but act while construction is in progress. A civil injunction suit is generally due within 3 years (Article 113, Limitation Act); delay weakens a writ petition.

Documents

Address and photographs, dated videos, sanctioned plan (via RTI if needed), title or occupancy proof of the complainant, earlier complaints and replies.

What a complaint cannot do

It cannot make the complainant the judge: the authority must give the owner notice and hearing before demolition or sealing, and some construction is protected or can be regularised.

What makes construction illegal

Construction is illegal (the statutes usually say unauthorised) when it is done without the building permit required by law, or in breach of the permit that was granted. The commonest examples in Delhi NCR are floors above the permitted height or FAR, covering of front and rear setbacks, projections and balconies over the road, basements beyond permitted limits, construction on a plot sanctioned for something else, and change of use from residential to commercial without permission. Construction on public land, parks, drains or roads is encroachment as well as unauthorised construction.

Not every deviation is a demolition case. Building bye-laws permit minor deviations to be compounded on payment of charges, and some construction in Delhi is protected for the time being under the National Capital Territory of Delhi Laws (Special Provisions) Second Act 2011, whose protection was extended by the 2023 amendment up to 31 December 2026 for certain categories; check whether it has been extended again. Unauthorised colonies in Delhi have their own regularisation framework. Knowing whether the construction you are complaining about can be regularised tells you how far a complaint is likely to go.

Illegality is also judged against the right rules. A plot in a DDA colony, a house in an MCD area, a flat in a Noida group housing society, a factory in a Greater Noida industrial sector and a farmhouse on agricultural land each sit under different authorities and bye-laws. The complaint must go to the authority that sanctions building plans for that land, and must say which rule has been broken.

The law behind an illegal construction complaint

Who can complain, and about what

Anyone can bring illegal construction to the authority's notice; the duty to act is the authority's, and a complaint from an unrelated citizen is as valid as one from a neighbour. But when the matter goes to court, standing matters. A neighbour whose light, air, access or structural safety is affected, an allottee in the same building, an RWA or society, or a co-owner has a clear interest. A rival or a person with a personal grudge may find the court asking why they are there, and courts have been sharp with complaints filed to extort money from builders.

Complain about specific, verifiable facts: the address, what is being built, which floor or area, since when, and why it is unauthorised (no sanction board displayed, extra floor beyond the sanctioned height, setback covered, construction on the road). Avoid general allegations about the owner's character or wealth. Photographs with dates, a short video and a rough sketch do more than pages of narrative.

Banks and NBFCs are interested complainants too. A lender whose security is a building that turns out to have unauthorised floors faces valuation and enforcement problems, and a bank that finds its borrower adding unsanctioned floors can report the matter to the authority and to the borrower, and use the breach of loan covenants in its own recovery process.

Which authority to complain to in Delhi

Most built-up areas of Delhi are under the Municipal Corporation of Delhi, which sanctions building plans and acts on unauthorised construction through the building department of each zone, headed by an Executive Engineer (Building). Complaints can be made in writing to the Executive Engineer and the Deputy Commissioner of the zone, through the MCD's online grievance system or the MCD 311 app, and copied to the local police station, which is expected to report unauthorised construction it notices to the MCD.

The New Delhi Municipal Council handles the NDMC area, the Delhi Cantonment Board handles the cantonment, and DDA handles its own land, its development areas and some colonies. Industrial areas developed by DSIIDC have their own rules. Construction on public land, the Yamuna floodplain or the Ridge may involve DDA, the Forest Department and the Revenue Department as well. If you are unsure, send the complaint to the MCD zone and DDA together and ask each to confirm jurisdiction in writing.

Ask in the complaint for a site inspection, a stop-work notice under section 344, a demolition or sealing order where appropriate, and a written reply. The MCD is required to give the owner notice and a hearing before demolition, and the Supreme Court in November 2024 laid down procedural safeguards for demolitions, including prior notice and time to respond, while leaving encroachments on public places and court-ordered demolitions outside them. Expect the process to take weeks, not days.

Which authority to complain to in Noida, Greater Noida, Ghaziabad and Gurugram

In Noida, the Noida Authority sanctions plans and acts on unauthorised construction through its planning and work circle departments; in Greater Noida, the Greater Noida Industrial Development Authority; along the Yamuna Expressway, YEIDA. Complaints go to the Chief Executive Officer's office and the relevant planning or enforcement department, in writing and through the authority's online grievance system. The UP government's IGRS portal (Jansunwai) is another route for complaints against inaction.

In Ghaziabad, the Ghaziabad Development Authority sanctions plans and enforces the 1973 Act within its area, while the Ghaziabad Municipal Corporation handles some municipal functions; complaints usually go to the GDA's enforcement zone. In Gurugram and Faridabad, the municipal corporation handles areas within its limits, HSVP handles its sectors, and the Department of Town and Country Planning handles licensed colonies and controlled areas; unauthorised construction in a licensed colony is a matter for DTCP's enforcement wing.

Wherever the property is, ask the authority to inspect, issue a stop-work notice, initiate demolition or sealing under its Act, and reply in writing. Keep the complaint number and the date of each follow-up; you will need them if you go to court.

How to file an illegal construction complaint, step by step

The steps below assume construction is going on now or has recently been completed.

1. Document the construction

   Take dated photographs and short videos from your own property or the public road, without trespassing. Note what is being built, which floor, and whether a sanction board is displayed. Repeat every few days so the progress is recorded.

2. Find the sanctioned plan

   Ask the authority for the sanctioned building plan of the property, through an RTI application if needed. Comparing the actual building with the plan turns a suspicion into a specific complaint.

3. Identify the authority

   Work out whether the land is under MCD, NDMC, DDA, the Cantonment Board, the Noida, Greater Noida or YEIDA authority, GDA, a Haryana municipal corporation, HSVP or DTCP. If two authorities may be involved, write to both.

4. Draft and submit the complaint

   Give the address, owner's name if known, what is unauthorised and why, attach photographs and the plan, and ask for inspection, stop-work notice and action under the relevant section. Submit it online and by hand or registered post, and keep the receipt.

5. Follow up in writing

   After two to three weeks, send a reminder to the next senior officer, enclosing the first complaint. Ask for the action taken report. If construction continues, say so with fresh photographs.

6. Use RTI to track action

   File an RTI asking for the file notings, inspection report and any notice issued on your complaint. Inaction recorded on paper is the foundation of a writ petition.

7. Go to court if nothing happens

   If the authority does not act within a reasonable time, file a writ petition in the High Court seeking a direction to decide your complaint and act in accordance with law. Where your own property is harmed, consider a civil suit for injunction as well.

Do not try to stop the work yourself, enter the site or threaten workers. That invites a criminal complaint against you and distracts from the real issue.

When the authority does nothing: writ petition in the High Court

The Delhi High Court and the Allahabad High Court regularly hear writ petitions about unauthorised construction, and the Punjab and Haryana High Court does so for Gurugram and Faridabad. The petition asks for a writ of mandamus directing the authority to act on the complaint in accordance with law. Courts usually do not decide on their own whether a particular floor is illegal; they direct the authority to inspect, give notice to the owner, pass a reasoned order and carry it out, and sometimes ask for a status report.

To succeed, show that you complained, that you followed up, that the construction is unauthorised on the face of the documents, and that the authority has not acted. Delay hurts: a petition filed after the building is complete and occupied for years faces questions about why the petitioner waited, and third-party buyers may now be in occupation. The owner of the construction is a necessary party and will be heard.

In illegal construction matters that reach Advocate B.K. Singh's office, the strongest petitions are the ones with a paper trail: the sanctioned plan obtained through RTI, dated photographs showing construction in progress, two or three written complaints with receipts, and the authority's own inspection report admitting the deviation. Where the authority has already passed a demolition order but not carried it out, the court can be asked to direct its execution.

Civil suit by a neighbour

A neighbour can file a civil suit for injunction against illegal construction where it causes special injury to the neighbour, beyond the general public interest in planning compliance: blocking an easement of light and air, encroaching on the neighbour's land or wall, endangering the neighbour's structure through excavation, or blocking a common passage. The suit asks for a permanent injunction, a mandatory injunction for removal of the offending part, and a temporary injunction under Order 39 rules 1 and 2 of the CPC to stop work while the case is decided.

Civil courts do not sit in appeal over municipal orders. In Delhi, matters that the Appellate Tribunal MCD can decide are generally outside civil court jurisdiction, and the DMC Act requires notice to the corporation before a suit against it. A neighbour's suit is therefore usually against the builder or owner for private rights, with the authority joined only where necessary. Where the complaint is simply that the building breaks the bye-laws, without special injury, the authority and the High Court are the more suitable routes.

A civil suit is also the route for boundary and encroachment disputes, where the illegal construction is partly on your land. In that case, get a demarcation from the revenue department or a survey by a licensed surveyor before filing, because the suit will turn on where the boundary actually lies.

Type of violation and where the complaint goes

Builder deviations in housing projects

In a group housing project, the commonest complaints are that the builder added towers or floors, reduced green areas, converted parking or common areas into saleable units, or changed the layout after selling flats. Under section 14 of RERA, a promoter cannot make additions or alterations to sanctioned plans, layouts and specifications of the apartment, building or common areas without the written consent of at least two-thirds of the allottees, apart from minor changes disclosed to the allottee. A complaint to the state RERA authority (Delhi RERA, UP RERA, Haryana RERA at Gurugram or Panchkula) is the direct remedy for allottees in a registered project, with appeal to the RERA Appellate Tribunal within 60 days.

Allottees can also complain to the development authority, which may refuse a revised plan or the completion certificate, and in some cases file a consumer complaint for deficiency in service. The two routes are complementary: RERA addresses the promoter's breach towards allottees, while the authority addresses compliance with planning law. Where the builder has obtained a revised sanction behind the allottees' backs, the challenge may need a writ petition against the authority.

RWAs and apartment owners' associations should act collectively. A complaint signed by a large number of allottees, supported by the original brochure, the sanctioned plan at the time of booking and the current plan, carries much more weight than scattered individual complaints.

Agricultural land, public land and Lal Dora areas

Construction on agricultural land in Delhi is regulated by the Delhi Land Reforms Act 1954 as well as the planning laws. Section 81 of that Act deals with use of land for purposes not connected with agriculture, and proceedings are taken before the Revenue Assistant (the SDM). In UP, the Revenue Code 2006 requires a declaration of non-agricultural use under section 80 before agricultural land is put to other use, and section 67 allows eviction from gram sabha and public land; the Tehsildar and Assistant Collector act on complaints. In Haryana, construction in controlled areas needs DTCP permission.

Encroachment on public land, such as roads, drains, gram sabha land or parks, can be reported to the municipal body, the development authority and the revenue department. Where the encroachment obstructs a public way or causes a nuisance, the SDM or Executive Magistrate can pass a conditional order for removal under section 152 of the BNSS. Police help is usually needed for actual removal, and the authority arranges it.

Lal Dora and abadi areas in Delhi villages have historically been outside the building bye-laws in many respects, though the position has been changing with urbanisation and policy notifications. Complaints about construction in such areas should first establish whether the area is still treated as Lal Dora and what rules currently apply.

How it differs by property type and by who is complaining

For a residential plot or builder floor, the complaint is usually about extra floors, setbacks or stilt parking converted into rooms. For a flat in a society, it may be about the builder or other owners altering common areas or the structure. For a shop, showroom or commercial complex, misuse and encroachment on the road are common. For a hospital, school or hotel, fire safety and parking requirements make deviations more serious, and the fire department and health authorities can be approached alongside the building authority. For an industrial shed or factory, the industrial authority's building regulations, pollution consents and fire NOC are all relevant.

A company, LLP or startup complaining about construction next to its premises acts through an authorised officer with a board resolution, and usually wants quick relief to protect its operations; an urgent civil injunction may be more useful than a slow municipal process. An NRI owner who finds that a neighbour has built onto a shared wall or encroached while the owner was abroad should appoint an attorney with express power to complain and sue, and act quickly. A bank discovering unauthorised construction on mortgaged property should document it, inform the borrower and consider its loan remedies, while bearing in mind that demolition reduces the value of its security.

RWAs and societies have standing for common-area issues and can pursue complaints collectively, but they must act through resolutions of their managing committees and avoid singling out members for reasons unrelated to planning law.

If the complaint is about your own construction

If you have received a show cause notice, stop-work notice, demolition order or sealing order, the steps are different: reply within the time given, with your sanctioned plan, title papers and an explanation of each alleged deviation; apply for compounding or regularisation where the rules allow; and appeal to the Appellate Tribunal MCD in Delhi or the appellate authority under the relevant UP or Haryana law within the time limit stated in the order or rules. The Supreme Court's November 2024 safeguards on notice and hearing apply to demolitions of private structures that are not on public land.

Do not ignore a notice because you believe the complaint is malicious. Authorities decide on the building, not on the complainant's motive. Our pages on responding to a demolition notice, sealing notice response and stop work notice response explain that side in more detail.

Documents for an illegal construction complaint

Mistakes that make a complaint fail

• Complaining to the wrong authority. A complaint to MCD about a DDA property, or to GDA about a Noida plot, gets forwarded slowly or not at all.
• No specifics. 'Illegal construction is going on' without the floor, the deviation and photographs is easy to close as 'no violation found'.
• Waiting until the building is finished. Stopping work at the first floor is far easier than demolishing a fifth floor that has been sold and occupied.
• No written follow-up. Phone calls and personal visits leave no record for a writ petition.
• Trespassing to gather evidence. Entering the site or confronting workers gives the other side a criminal complaint against you.
• Using the complaint as a bargaining chip. Courts dismiss petitions filed to pressure builders for money, and may impose costs.

Cost, time and what to do this week

Filing a complaint with the authority costs nothing. RTI applications carry a small statutory fee. A writ petition or civil suit involves court fee and professional fees, which vary with the case; we do not quote figures. Authorities usually take weeks to inspect and issue notices, and demolition or sealing takes longer because the owner must be heard and may appeal. A writ petition can move the authority within a few hearings if the paper trail is good.

This week, photograph the construction from your property or the public road, note dates, identify the authority and file a written complaint online and by hand. File an RTI for the sanctioned plan. If the construction harms your own property, speak to a lawyer about an urgent injunction before more floors go up.

Related pages: encroachment removal cases, easement rights cases for light, air and passage, boundary disputes, suit for permanent injunction, RERA complaint filing against builder deviations, common area disputes and cases in the Delhi High Court.

If you want the papers checked before you act, the team of Advocate B.K. Singh at Legals365 can review them and tell you the next step: talk to a lawyer.

Residential property: what changes

Residential property covers houses, builder floors, flats in group housing societies and apartments in developer projects. It is the property people care about most, and the law gives it more protection than commercial premises: consumer remedies against builders, rent control for old tenancies, special rules for senior citizens and family members. It also carries more family disputes than any other kind of asset.

The documents depend on the type. For an independent house or builder floor in Delhi, ask for the chain of sale deeds or the conveyance deed from DDA, the sanctioned building plan, the completion certificate, mutation in MCD records, the latest property tax receipt and electricity and water bills. For a flat in a cooperative group housing society, ownership runs through membership: the share certificate, the society's NOC and the Registrar of Cooperative Societies' approval of the transfer matter as much as the deed. For a flat in a developer project in Noida, Greater Noida or Gurugram, check the RERA registration, the builder-buyer agreement, the occupancy certificate, the tripartite sub-lease or conveyance deed, and whether the builder has paid the land dues to the authority, since unpaid dues have held up registration for thousands of buyers.

Stamp duty is charged on the higher of the price and the circle rate. Delhi charges women buyers a lower rate, and joint purchases fall in between; Uttar Pradesh and Haryana have their own concessions. Registration is at the sub-registrar office for the area, with both parties and two witnesses present. After registration, mutation in the municipal or authority record should be applied for, since it governs property tax and later dealings, even though mutation is not proof of title.

Disputes tend to fall into a few groups. Against builders: delayed possession, reduced area, poor construction and missing amenities, which go to the RERA authority or the consumer commission at the buyer's choice. Between landlord and tenant: old tenancies with rent up to ₹3,500 a month in Delhi are governed by the Delhi Rent Control Act 1958, where eviction for the landlord's bona fide need under section 14(1)(e) is the usual route; newer tenancies are contractual and go to the civil court or the rent authority under any new tenancy law the state has adopted. Within families: partition, wills and succession, and disputes over who may live in the house. Senior citizens can approach the Maintenance Tribunal under the Maintenance and Welfare of Parents and Senior Citizens Act 2007, which in appropriate cases has ordered children to vacate a parent's house. A wife's right to reside in the shared household under the Domestic Violence Act 2005 can also affect who stays in a property.

A few habits prevent most problems. Never buy on a GPA and agreement to sell alone. Insist on the occupancy or completion certificate. Keep original documents safe and certified copies handy. And put family arrangements about a house in writing, ideally a registered partition or family settlement, before a death or a marriage breakdown turns them into litigation.

Frequently asked questions

How do I complain about illegal construction by my neighbour in Delhi?

Write to the Executive Engineer (Building) of the MCD zone, or to NDMC, DDA or the Cantonment Board if the area is theirs, with the address, photographs and the sanctioned plan if you have it. You can also use the MCD online grievance system or the MCD 311 app. Keep the complaint number and follow up in writing.

Where do I complain about illegal construction in Noida or Greater Noida?

Complain to the Noida Authority or the Greater Noida Industrial Development Authority, depending on the sector, through their planning or enforcement departments and online grievance systems. The UP IGRS (Jansunwai) portal can be used if there is no response. YEIDA handles areas along the Yamuna Expressway.

What can I do if the authority does not act on my complaint?

Escalate in writing to senior officers, use RTI to get the action taken report, and then file a writ petition in the High Court for a direction to act in accordance with law. Courts usually direct the authority to inspect, hear the owner and pass a reasoned order within a set time.

Can I file a civil suit against my neighbour's illegal construction?

Yes, if the construction causes you special injury, such as blocking light and air, encroaching on your land or endangering your building. The suit seeks an injunction and removal of the offending part. A general breach of bye-laws without personal harm is better taken to the authority or High Court.

Can I complain to RERA about illegal construction?

Yes, if you are an allottee in a RERA-registered project and the promoter has altered sanctioned plans, layouts or common areas without the consent required under section 14. RERA does not hear complaints by neighbours about ordinary private construction.

Can the police stop illegal construction?

Police do not sanction or demolish buildings, but they are expected to report unauthorised construction to the municipal body and assist in demolition. If construction involves trespass on your land or threats, a police complaint is appropriate. The main action lies with the building authority.

Can I complain anonymously?

Some online grievance systems allow it, but anonymous complaints are easier to ignore and cannot be followed up in court. A named complaint with documents is more effective. If you fear retaliation, mention it in the complaint and keep records.

Will the illegal construction be demolished?

Not always. Minor deviations may be compounded on payment, some construction in Delhi is protected for now under the special provisions law, and the owner gets notice and a hearing before any demolition. Construction on public land or in clear breach of sanction is more likely to face demolition or sealing.

How long does an illegal construction complaint take?

Inspection and a notice usually take weeks; demolition or sealing can take months because the owner must be heard and may appeal. A writ petition can speed up a slow authority. Acting while construction is in progress shortens everything.

Can a builder add floors after I bought my flat?

Not without following section 14 of RERA, which requires the written consent of two-thirds of allottees for alterations beyond minor disclosed changes, and a revised sanction from the authority. Allottees can complain to RERA and the authority. Collective complaints through the RWA carry more weight.

Is construction on agricultural land illegal?

It depends on the state and the land use. In Delhi, non-agricultural use of agricultural land can lead to proceedings under the Delhi Land Reforms Act, and planning laws also apply. In UP, a declaration of non-agricultural use under the Revenue Code is generally needed first.

What if the illegal construction complaint is false?

The owner should reply to the authority's notice with the sanctioned plan and title papers, and the authority must decide on the facts. If the complaint was filed to harass or extort, courts can impose costs on the complainant. Criminal remedies may also be available for false allegations.

Should I go to RERA or the consumer commission against my builder?

You can choose either, as the Supreme Court held in Newtech Promoters v State of UP (2021), but not both for the same relief. RERA is often quicker for refund or delay interest under section 18; the consumer commission can also award compensation for deficiency in service. The choice depends on the amount, the relief you want and how far the project has progressed.

Can my son be evicted from my house if he harasses me?

In many cases, yes. The Maintenance Tribunal under the Senior Citizens Act 2007 has power to protect a parent's property and life, and courts have upheld eviction orders against children in suitable cases. The parent's ownership of the house and evidence of ill-treatment are the key facts.