RERA Project Modification & Change Services in Mumbai
Very few projects are delivered exactly as they were first registered. A structural consultant recommends a change to a slab, a fire officer asks for a wider refuge area, a podium is redesigned to gain parking, or an amenity that looked viable at launch is no longer commercially sensible. None of these are unusual. What creates risk is the gap between making the change on site and recording it correctly on the regulator's portal.
Under the Real Estate (Regulation and Development) Act, 2016, a registered project is a published set of promises. The sanctioned plans, the specifications, the amenities, the completion date and the promoter's own particulars are all on public record, and every allottee has bought against that record. A RERA project modification is the mechanism by which that record is lawfully brought back into line with reality.
N D Savla & Associates handles RERA modification and change work for developers across Mumbai, Thane, Navi Mumbai and Pune. We assess whether a proposed change needs allottee consent at all, prepare the supporting certification, run the consent process where it is required, and file the revised particulars. Our wider RERA advisory for developers means the same team already understands how the project was registered in the first place.
What Is Project Modification and Change Under RERA?
A RERA project modification is a formal change to the particulars of a registered real estate project, made with the approvals the Act requires and then reflected on the regulatory portal. It covers changes to what is being built, changes to how the project is described, and changes to who is responsible for it.
The governing provision is Section 14 of the RERA Act, 2016, which requires the promoter to develop and complete the project in accordance with the sanctioned plans, layout plans and specifications approved by the competent authorities. Departing from those approvals is permitted, but only through the consent route the section prescribes.
In practice, the changes we handle fall into four groups:
- Design changes — revisions to sanctioned plans, layout plans, floor plates, elevation, podium or basement configuration
- Specification changes — alterations to fixtures, fittings, finishes, or the nature and extent of declared amenities
- Disclosure changes — corrections to registered particulars such as carpet area statements, project cost, phasing or bank account details
- Constitutional changes — changes to promoter details, co-promoter arrangements, architect, engineer or contractor of record
A change that has already been approved by the planning authority is not automatically compliant under RERA. Municipal sanction and RERA disclosure are two separate obligations, and a revised commencement certificate on file does not by itself update the project record on the portal.
Who Needs RERA Project Modification and Change Services?
The requirement arises for any promoter of a registered project whose current position differs from what is recorded on the portal. Five situations account for most of the work.
Developers Revising Sanctioned Plans Mid-Construction
Amended plans are the most common trigger. A revised sanction changes the built form, and often the carpet areas and common areas that allottees contracted for. The promoter needs to establish which allottees are affected, whether the change falls inside the narrow architectural-necessity exception, and what consent is needed before the revision is implemented.
Projects Correcting Errors in the Original Registration
A surprising number of modification applications are corrections rather than changes. Carpet areas entered incorrectly at registration, wrong project cost, a mis-stated number of units, or an incorrect designated bank account all need to be rectified. These are usually handled as a correction of registered particulars rather than a Section 14 consent exercise, and they are far easier to resolve if caught at the quarterly update stage rather than at occupancy certificate stage.
Promoters Changing Amenities or Project Scope
Withdrawing or downgrading a declared amenity is one of the most complaint-prone changes in the sector. A clubhouse, swimming pool or landscaped deck that was marketed and disclosed forms part of the specification the allottees bought. Removing it without consent invites both penalty exposure and individual complaints for compensation.
Projects With Changes in Promoter Constitution
Adding a co-promoter, changing an architect or engineer of record, or altering the internal constitution of the promoter entity requires the portal record to be updated. Where the change goes further and amounts to a transfer of majority rights and liabilities, it is no longer a modification at all and must be handled as a project transfer under Section 15, which is a materially heavier process.
Phased Developments Restructuring Their Phasing
Merging two registered phases, splitting one phase into two, or moving a building between phases changes the boundaries of separate registrations. Each affected registration has to be dealt with individually, and allottees in each phase have to be assessed separately for consent.
How Did the Rules on Changing a Project Evolve in India?
The current framework only makes sense against what preceded it. For most of India's history a developer could redesign a project at will, and a buyer discovered the change on possession day.
Before 1991: Sanction Without Disclosure
Maharashtra had the Maharashtra Ownership Flats Act, 1963, which required promoters to disclose plans and specifications and restricted alterations without consent. It was ahead of its time, but enforcement ran through the civil courts, there was no public register of projects, and no authority monitored whether the building matched the plan. In the rest of the country there was often no equivalent statute at all.
1991 to 2005: Scale Outpaces Regulation
Liberalisation in 1991 brought organised capital into real estate, and the permission of one hundred per cent foreign direct investment in construction development under the automatic route in 2005 accelerated project sizes further. Phased townships replaced single buildings. Design changes became routine features of long-cycle projects, and the absence of any disclosure obligation meant buyers had no visibility of them.
2016 to 2017: Section 14 Creates a Consent Test
The RERA Act, 2016 came into full force on 1 May 2017 and, for the first time nationally, made the sanctioned plan a binding public commitment. Section 14 drew a deliberate line between minor changes required for architectural or structural reasons, which need certification and intimation, and everything else, which needs two-thirds allottee consent. The Maharashtra Real Estate Regulatory Authority was constituted in 2017 and began recording modifications on its portal.
2018 Onwards: Procedure and Enforcement Mature
As the first cohort of registered projects moved through construction, authorities issued standard operating procedures for updating registered projects and for revising or correcting information, and complaint volumes around amenity withdrawal and carpet area variation grew. Section 14 also carries a five-year defect liability obligation running from handover, which has increasingly shaped how promoters document specification changes during construction rather than after it.
The Position Today
Modification is now a routine, expected part of project administration rather than an exception. Authorities scrutinise the consistency between sanctioned plans, the portal record, the agreement for sale and the quarterly updates. Developers who maintain that consistency continuously find modification straightforward; those who reconcile only at the end find it expensive.
What Does Section 14 of the RERA Act Permit and Prohibit?
Section 14 sets out three distinct rules, and most compliance failures come from applying the wrong one.
Changes to an Individual Apartment
The promoter cannot make additions or alterations to the sanctioned plans, layout plans, specifications or the nature of fixtures, fittings and amenities of a particular apartment without the previous consent of the allottee of that apartment. This is an individual consent, not a collective one.
Minor Changes Required for Architectural or Structural Reasons
A narrow exception permits minor additions or alterations that are necessary for architectural or structural reasons, provided they are duly recommended and verified by an authorised architect or engineer, and provided proper declaration and intimation is given to the allottee. The exception depends on genuine technical necessity, documented at the time. It is not a route for commercially motivated redesign.
Changes to the Building or Common Areas
Any other addition or alteration to the sanctioned plans, layout plans and specifications of the buildings or common areas within the project requires the previous written consent of at least two-thirds of the allottees, other than the promoter, who have agreed to take apartments in that building. As with a project transfer, an allottee holding several apartments counts as one allottee for this calculation.
The Five-Year Defect Liability That Follows
Section 14 also fixes a five-year defect liability period running from the date of handing over possession. Where a structural defect, or a defect in workmanship, quality or provision of services is brought to the promoter's notice within that period, the promoter must rectify it without further charge within thirty days, failing which the allottee is entitled to compensation. Specification changes made during construction feed directly into this exposure, which is why the certification trail matters long after the project is complete.
Implementing a change first and regularising it later is the single most common failure in this area. Consent under Section 14 is expressed as previous consent. A consent obtained after the slab is cast does not cure the contravention, and it substantially weakens the promoter's position if an allottee complains.
What Is the Step-by-Step RERA Modification Process?
The process runs in seven stages. Classification at stage two determines almost everything that follows.
- Map the change against the registered record. Compare the proposed revision with the sanctioned plans, the registered particulars on the portal, the specifications annexed to the agreement for sale, and the marketing material issued to buyers.
- Classify the change. Establish whether it affects an individual apartment, qualifies as a minor architectural or structural necessity, affects the building or common areas, or is simply a correction of registered particulars. Each route has a different consent requirement.
- Obtain technical certification. Where the change is claimed as an architectural or structural necessity, secure a written recommendation and verification from the authorised architect or engineer, dated before implementation.
- Secure the planning approval. Obtain the amended sanction, revised commencement certificate or other approval from the competent authority, since the regulator will expect the revised plan to already be sanctioned.
- Run the consent exercise. Issue a clear written communication to affected allottees setting out the change and its effect, then collect individual or two-third consent as applicable, applying the one-allottee-one-vote rule and keeping an auditable record.
- File the modification on the portal. Submit the revised particulars with the amended plans, technical certification, consent record, revised cost workings and any supporting professional certificates required for the project.
- Reconcile downstream documents. Update the agreement for sale format, the allotment letters issued thereafter, the marketing collateral and the next quarterly disclosure so that every document tells the same story.
Step seven is the one most often skipped. A modification recorded on the portal but not reflected in the next quarterly filing produces a visible inconsistency in the public record, and it is precisely the kind of mismatch that triggers scrutiny. Where a design change also pushes the completion date, a separate application for extension of registration has to be prepared alongside the modification, not instead of it.
Which Changes Need Consent and Which Only Need Disclosure?
The table below summarises how the common change types are treated. It is a working guide, not a substitute for assessing the specific project record.
| Type of Change | Consent Required | Route |
|---|
| Alteration to a specific apartment's plan or fittings | That allottee's consent | Section 14(2) individual consent |
| Minor change certified as architecturally or structurally necessary | Not required | Architect or engineer certification plus intimation |
| Change to building layout, common areas or specifications | Two-thirds of allottees | Section 14(2) collective consent |
| Withdrawal or downgrade of a declared amenity | Two-thirds of allottees | Section 14(2) collective consent |
| Correction of a data-entry error in registered particulars | Not required | Correction of registered particulars |
| Change of architect, engineer or contractor of record | Not required | Portal update with supporting documents |
| Change in completion date | Not applicable | Separate extension application |
Where a change sits close to the boundary between the architectural-necessity exception and the two-thirds consent requirement, the safer course is to treat it as requiring consent. The cost of running a consent exercise is far lower than the cost of defending a complaint after possession.
How Does RERA Modification Differ Across Project Types?
The statutory test does not change, but the practical difficulty does. Four project types account for most modification work in the Mumbai region.
Redevelopment and Society Projects
Redevelopment carries two consent regimes at once. Existing society members hold rights under the development agreement and their individual permanent alternate accommodation agreements, while purchasers in the sale component are allottees under RERA. A change to the layout can require society approval under one framework and two-thirds allottee consent under the other. Sequencing these correctly, rather than assuming one covers the other, is the whole job.
Phased Townships and Large Layouts
In a phased development each registered phase is a separate project with its own allottee base. A layout revision touching common infrastructure may require separate consent exercises across several registrations simultaneously, with different consent thresholds met at different times. Coordinating them so that no phase is left with a stale record is the main risk.
Commercial and Office Developments
Commercial projects have fewer allottees, so reaching two-thirds is arithmetically easier, but each allottee is a commercially sophisticated party. Floor plate efficiency, common area ratios, parking allocation and service capacity are negotiated positions, and a change to any of them is likely to be contested rather than waved through.
Plotted and Integrated Schemes
In plotted developments the specification that matters is infrastructure rather than construction — internal roads, water supply, drainage, electrification and declared common amenities. Changes here are frequently driven by approval conditions imposed after registration, and the documentation focus is on demonstrating that the revision was mandated rather than elective.
Why Choose N D Savla & Associates for RERA Modification?
Modification work rewards precision at the classification stage. Getting that wrong produces either an unnecessary consent exercise or an unlawful change.
Classification Before Filing
We begin by mapping the proposed change against the registered record and the agreements for sale, and we give a written view on which route applies before any application is drafted. This is the step that determines cost, timeline and risk, and it is the step most often skipped.
Financial Particulars Reviewed by Auditors
Modifications frequently change project cost, carpet area statements and the funds position. As a chartered accountancy firm we reconcile the revised cost workings against the designated bank account and the receipts already collected, so that the revised figures filed on the portal are defensible rather than indicative.
Consent Processes That Withstand Challenge
A consent exercise is only as strong as its record. We prepare the disclosure communication, track responses against the one-allottee-one-vote rule, and maintain documentation that can be produced if a dissenting allottee later disputes the process.
Continuity Across the Whole Registration
Because we also handle registration, quarterly reporting, extensions and transfers, a modification is assessed in the context of everything else on the file. Buyers seeking independent guidance on how a change affects their booking can also use our RERA advisory for buyers, which we keep deliberately separate from developer engagements on the same project.
Filings Made Locally in Mumbai
Applications and follow-ups for Maharashtra projects are handled directly on the MahaRERA portal, with in-person attendance where a hearing helps. Our offices at Andheri East, Charni Road, Vashi, Thane, New Panvel and Panaji keep the team close to the project rather than at a distance from it.
Frequently Asked Questions on RERA Project Modification
Can a registered project be modified under RERA?
Yes, but the route depends on what is changing. Minor additions or alterations required for architectural or structural reasons can be made after an architect or engineer certifies the necessity and the allottee is informed. Any other change to sanctioned plans, layout plans or specifications of the buildings or common areas needs the prior written consent of at least two-thirds of the allottees, and the revised particulars must then be updated on the RERA portal.
Is allottee consent required for every RERA project modification?
No. Section 14 of the RERA Act, 2016 distinguishes between changes affecting an individual apartment and changes affecting the building or common areas. A change to a specific apartment needs that allottee's consent. A change to the sanctioned plans, layout plans or specifications of the building or common areas needs two-thirds consent of the allottees other than the promoter, with each allottee counted once regardless of how many units they hold.
What happens if a developer makes changes without RERA approval?
Unapproved changes expose the promoter to penalty proceedings under Section 61 of the RERA Act, which permits a penalty of up to five per cent of the estimated cost of the project. Allottees can also file complaints seeking restoration of the original plan or compensation, and the mismatch between the portal record and site conditions is usually discovered at the time of the next quarterly update or occupancy certificate application.
What is the difference between a RERA modification and a project extension?
A modification changes what is being built or how the project is described, such as layout, specifications, amenities or promoter particulars. An extension changes only the completion date of the registration. They are separate applications with different tests, and a developer who is behind schedule because of a design change usually needs both.
How long does a RERA project modification take in Maharashtra?
Where no allottee consent is needed and the change is a correction of registered particulars, the portal update is usually completed within a few weeks of filing complete documents. Where two-thirds consent is required, the consent exercise itself is the longest stage and commonly takes six to twelve weeks depending on the size of the allottee base, followed by scrutiny of the revised plans and supporting approvals.