You booked a flat overlooking a central park. Three years later, foundations for a new tower appear right where the park was supposed to be. Or the builder adds four floors to your tower, sharing your lifts, water and parking with forty more families. Or your own flat is delivered with a smaller balcony and a bedroom that's been shifted, because the plans were "revised". The sales team says the builder was entitled to do it, because a clause in the agreement allowed "changes as deemed fit".
That clause doesn't settle the matter. The Real Estate (Regulation and Development) Act, 2016 limits what a builder can change after selling units, and requires buyers' consent for most changes. This page explains the rules, how they're applied, and what you can do, both when changes are being planned and after they've happened.
What Section 14 says
Section 14(1) requires the promoter to develop and complete the project in accordance with the sanctioned plans, layout plans and specifications, as approved by the competent authorities.
Section 14(2) then puts two layers of protection in place.
- Changes to your own unit. The promoter can't make additions or alterations to the sanctioned plans, layout plans, specifications, or the nature of fixtures, fittings and amenities described and agreed for your apartment, plot or building, without your previous written consent. There's a limited exception for minor changes requested by you, or minor changes needed for architectural and structural reasons, duly recommended and verified by an authorised architect or engineer, after proper declaration and intimation to you.
- Changes to the building or common areas. Any other additions or alterations to the sanctioned plans, layout plans and specifications of the buildings or the common areas within the project need the previous written consent of at least two-thirds of the allottees, not counting the promoter. For this purpose, allottees are counted per unit, regardless of how many units one person holds.
The point of the second rule is that buyers bought into a project as it was designed: its density, its open spaces, its facilities. A builder can't, after selling, redesign the project to squeeze in more saleable area at the cost of what buyers paid for.
Changes that commonly need consent
- A new tower or block on land shown as open space, a park, a play area or a future phase "for amenities".
- Additional floors on existing towers, often after the builder buys additional floor area ratio under a state policy.
- Reduction or relocation of common facilities: the club, pool, community hall, parks or parking.
- Change in the number of units, such as splitting larger flats into smaller ones.
- Change of use, such as converting a planned school site or commercial pocket into residential towers.
- Changes to your own flat: area, internal layout, orientation, balcony size, floor-to-ceiling height, specifications.
"But the authority approved the revised plan"
This is the builder's usual answer, and it's important to understand why it isn't conclusive. The development authority's approval of a revised plan means the plan complies with building byelaws and planning rules. It doesn't mean the builder has complied with its obligations to buyers under RERA. The Act requires consent from allottees in addition to approval from the planning authority. A revised plan approved without the required consent may still be open to challenge before the RERA authority, and in some cases before the High Court.
The clearest illustration of how seriously courts take this is the Supreme Court's 2021 decision on the twin towers in Supertech's Emerald Court project in Noida. The Court upheld the Allahabad High Court's finding that the two additional towers had been built in violation of building regulations, including minimum distance requirements, and without the consent of existing flat owners required under the state's apartment ownership law. It ordered the towers demolished, and they were brought down in 2022. That case was decided under state law rather than RERA, but it shows that approvals obtained without buyers' consent can be undone.
What "consent" means
Builders sometimes claim consent was given, pointing to:
- a clause in the original agreement authorising the builder to make any changes it considers fit;
- a notice in a newspaper inviting objections, with silence treated as consent;
- signatures collected at the time of possession on a bundle of documents, one of which "consents" to future plan changes; or
- a meeting where some buyers raised no objection.
The Act asks for previous written consent to the specific change. A general authorisation buried in a standard-form agreement, signed before the change was even conceived, sits uneasily with that requirement. Silence in response to a newspaper notice isn't written consent. And a consent obtained by putting the document in a pile at possession, without explaining it, is open to challenge. Each case turns on its facts, so collect whatever the builder claims as consent and read it carefully.
Acting before the change is built
The best time to challenge a plan change is before construction starts. Once a new tower is up and its flats are sold to new buyers, undoing it becomes much harder, even if the law is on your side.
Watch for warning signs
- Survey or soil testing work on open land within the project
- Notices from the builder or the authority about a "revised plan" or "additional FAR"
- New project names or new phases appearing on the builder's website or the RERA portal
- The builder seeking signatures from buyers on consent forms
- Changes in the project's RERA registration, such as a revised layout or increased number of units
Get the documents
Ask the builder in writing for the originally sanctioned layout plan, the revised plan, and details of any consents obtained. Check the RERA portal, which often shows revised approvals. You can also seek copies from the development authority, if necessary through a request under the Right to Information Act.
Object in writing, collectively
Under Section 14(2), the builder needs two-thirds of allottees for changes to the building or common areas. If more than one-third object in writing, the builder can't lawfully claim the required consent. A coordinated written objection from residents, with each allottee's unit details, is a powerful document.
Ask RERA for interim relief
Section 36 allows the authority to pass interim orders, including restraining a promoter from carrying on an activity that contravenes the Act, until an inquiry is completed. Where construction is about to start, or has started, without the required consent, a complaint with an urgent request for a stay is often the most important step.
Acting after the change has happened
If the change has already been built, the remedies depend on what was changed and how badly it affects you.
- Restoration of the common area or facility, where practical.
- Compensation for loss of amenities, reduced open space, increased density, or a smaller or changed unit. Compensation under Section 14 is decided by the adjudicating officer.
- Refund with interest, if the change is material enough that you no longer want the unit, particularly where it was made before possession.
- Proportionate reduction in price where your own unit's area or specifications were reduced.
- Penalties against the builder for violating the Act.
- Proceedings before the High Court, where the planning authority's approval is itself under challenge for having been granted in breach of the law.
Changes to your own flat
Changes inside your unit are a separate issue from project-wide changes, and the rule is stricter: your own previous written consent is needed, apart from minor changes justified on architectural or structural grounds and properly intimated to you.
Examples include a smaller carpet area than agreed, a bedroom converted into a study, a balcony removed or enclosed, a different floor plan from the one in your agreement, a lower ceiling height, or materially different specifications. If you discover a change at possession, record it in writing before you accept the keys. If the change is significant, you may be entitled to a proportionate price reduction, compensation, or, where the flat is materially different from what you agreed to buy, a refund.
How we approach these cases
- Compare the plans: the plan in your agreement and brochure, the originally sanctioned plan, and the revised plan.
- Identify the change precisely: what's been added, removed or moved, and how it affects you and the common areas.
- Examine the consent the builder relies on, if any.
- Coordinate with other allottees or the association, because Section 14(2) consent is counted collectively.
- File a complaint, with an urgent request for interim relief where construction is imminent or ongoing.
- Consider parallel remedies, such as a challenge to the authority's approval, where the case requires it.
- Pursue compensation where restoration isn't realistic.
Additional FAR and density
A specific trigger for plan changes in the NCR has been policies allowing builders to buy additional floor area ratio, or FAR, beyond what was originally sanctioned. In Noida and Greater Noida, purchasable FAR policies allowed builders to add floors or towers to existing projects on payment of a fee. In Haryana, changes to FAR norms and transit-oriented development policies have had a similar effect in some areas.
Buying additional FAR from the planning authority doesn't remove the builder's obligations to existing buyers. The extra area is built on land in which existing buyers have an undivided share, and it adds load to common facilities they've paid for: lifts, water supply, sewage treatment, parking, power backup and open space. That's precisely why the Act requires two-thirds consent for changes to the buildings and common areas. If your builder is using additional FAR to expand an occupied project, the consent question is central.
Promised amenities that were quietly dropped
Not every plan change involves new construction. Sometimes the builder simply doesn't build what it promised: no club, a smaller pool, a jogging track that became a parking lot, a community centre that never appeared. Where these amenities were part of the sanctioned layout and the brochure, dropping them is itself a change to the specifications of the common areas, and it may also be a misrepresentation under Section 12. Our page on amenities not provided covers this in more detail.
Changes and your registry
Plan changes can also complicate the conveyance of common areas. If the builder adds towers, the undivided share of land attributable to each existing flat may be reduced. If the builder retains part of the land for future development, the association may not receive the full common area it was promised. When the time comes to execute conveyance deeds and transfer common areas under Section 17, check that the land description and share correspond to the original sanctioned layout, not to a revised plan that buyers never agreed to.
Where to file
Complaints about plan changes go to the RERA authority of the state where the project is: UP RERA for Noida, Greater Noida, the Yamuna Expressway and Ghaziabad; Haryana RERA in Gurugram or Panchkula; Delhi RERA for Delhi. Where the challenge is to the planning authority's own approval, the High Court with jurisdiction may also be involved: the Allahabad High Court for Uttar Pradesh, the Punjab and Haryana High Court for Haryana, and the Delhi High Court for Delhi.
How residents organise an objection
Plan-change disputes are won or lost on organisation. Because the Act counts consent collectively, a scattered set of individual complaints is far less effective than a coordinated response. Here's how associations that have handled this well usually go about it.
- Form a small working group of residents willing to collect documents and coordinate. It helps to include someone comfortable with plans and drawings, such as an architect or engineer living in the society.
- Get the plans. Obtain the originally sanctioned layout and the revised plan, from the builder, the RERA portal, or the development authority.
- Explain the change to residents in plain terms: what's being built, where, how many units, and how it affects open space, parking and services. A simple marked-up layout plan works better than a long letter.
- Collect written objections, signed by each allottee with unit number and contact details. Count them against the total number of allottees, so you know whether more than a third have objected.
- Send the objections to the builder and the development authority, with a copy to the RERA authority.
- File a complaint before RERA, with a request for interim relief if construction is imminent.
- Keep residents informed, because builders sometimes approach individuals with offers or consent forms while the dispute is pending.
When some residents support the change
Occasionally, part of the society supports the builder's plan. Perhaps the builder has promised to complete a long-pending club in return, or to clear dues blocking registries. That's a legitimate negotiation, and some societies have reached sensible agreements. The key is that any consent should be informed, specific, written and genuinely voluntary, and the benefits promised in return should be recorded in a binding agreement with clear timelines. A promise that "the club will be completed after the new towers are sold" isn't worth much without enforceable terms.
What builders argue
"The land is ours; we have unused FAR." The builder may own the land, but once units are sold, the Act restricts what it can do with the sanctioned layout and common areas without consent.
"Buyers agreed in the BBA." General clauses permitting changes are not the same as specific previous written consent.
"The new tower is a separate project." If it's built within the same layout, on land shown as common area or open space, and uses common infrastructure, it's hard to describe it as separate.
"Objections are too late." Delay can weaken a case, particularly once third-party buyers are involved, but it doesn't make an unconsented change lawful.
Changes made before the Act came into force
Some plan changes happened before 2017, while the project was under construction. Buyers in those projects sometimes assume RERA can't help. The position is more nuanced. Where the project was still ongoing when the Act came into force, the Supreme Court has held that the Act applies to it. Changes made earlier may have breached state laws in force at the time, such as apartment ownership acts that required buyers' consent for changes, and those laws may still provide a remedy. And where the builder continued building the changed structure after RERA came in, the Act's requirements apply to that continuing work. Bring the dates of each approval and each stage of construction, and we'll work out which law applies.
Plan changes and the value of your flat
Buyers sometimes struggle to explain why a plan change matters to them in money terms. A few approaches help when claiming compensation.
- Loss of view or open space. Brokers' evidence of the price premium for park-facing units compared with others in the same society.
- Increased density. Evidence of the effect on common facilities: lift waiting times, parking shortages, water supply, and maintenance costs per flat.
- Reduced unit area. A straightforward proportionate calculation based on the agreed rate per square foot.
- Loss of amenities. The share of the price attributable to amenities that weren't built, or the cost of providing them now.
These figures don't need to be perfect. They need to be reasonable and backed by something more than a resident's estimate.
Our view
Plan-change cases are among the most important a residents' association can bring, because they decide what kind of place people will live in for decades. They're also time-sensitive. If you see signs of a change, act early, act together, and get the documents first. We're glad to work with associations from the first objection letter through to the authority and, where needed, the High Court.
An illustration
A simplified, made-up example.
A society of 600 flats in Greater Noida was marketed with a three-acre central green and a club. After most residents had moved in, the builder obtained approval for a revised layout adding two 25-storey towers on part of the green, using additional purchasable floor area. It claimed consent based on a clause in the original agreement and a newspaper notice that drew "no objections". Residents noticed boundary walls going up and soil testing equipment on the green.
The residents' association collected written objections from more than 300 allottees, obtained the revised plan through the development authority, and filed a complaint before UP RERA seeking a stay on construction, a declaration that the required two-thirds consent hadn't been obtained, and restoration of the green. The objections from more than a third of allottees made it difficult for the builder to show the consent Section 14(2) requires. Whether the approval itself should be challenged before the High Court is a further question the association can consider.
Documents to gather
- Your agreement, including the layout plan and unit plan attached to it
- The brochure and any marketing showing the layout, open spaces and amenities
- The originally sanctioned layout plan and building plans, if available
- Any revised plan, and any notice about it from the builder or authority
- Any consent form or document the builder relies on
- Photographs of the site before and after
- The project's RERA registration page and quarterly updates
- Written objections from you and other allottees
Frequently asked questions
Can a builder change the layout after selling flats?
Only within the limits of Section 14. Changes to your own unit need your previous written consent, apart from minor changes justified on architectural or structural grounds. Changes to the building or common areas need the previous written consent of at least two-thirds of allottees.
The authority approved the revised plan. Isn't that enough?
No. Planning approval and buyers' consent are separate requirements. A revised plan approved without the consent required by RERA can still be challenged.
Does a clause in my agreement allowing changes count as consent?
A general clause signed before the change was conceived is unlikely to be the specific previous written consent the Act contemplates, though the answer depends on the wording and the facts.
Can RERA stop construction of a new tower?
The authority can pass interim orders under Section 36, including restraining activity that contravenes the Act, while it examines the complaint.
My flat is smaller than the plan in my agreement. What can I do?
Record the difference in writing before taking possession. Depending on the extent, you may claim a proportionate price reduction, compensation, or a refund where the change is material.
Can the builder add floors to my tower?
Adding floors alters the sanctioned plans of the building and generally needs the consent of two-thirds of allottees under Section 14(2), in addition to planning approval.
How is the two-thirds counted?
By allottees per unit, excluding the promoter. One allottee holding several units counts as one under the Act's explanation.
Is it too late to object if construction has started?
No, but act quickly. The further construction goes, and especially once new buyers are involved, the harder restoration becomes.
General information about plan changes under Section 14 of the Real Estate (Regulation and Development) Act, 2016. Not legal advice. The example is an illustration, not a real case.
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