RERA Complaint Filing Karnataka: How Bengaluru Buyers Act When a Builder Defaults

On January 2, 2026, Karnataka RERA (K-RERA) ordered Ozone Infra Developers to pay roughly 19.87 lakh rupees in delay interest to homebuyers whose Bengaluru apartment ran more than four years late. The order, reported by LiveLaw, fixed interest at the State Bank of India Marginal Cost of Funds based Lending Rate (SBI MCLR) plus 2 percent and gave the builder 60 days to pay. It is the kind of result the Real Estate (Regulation and Development) Act 2016 (RERA) was written to deliver, and it is exactly why RERA complaint filing Karnataka is the first move a defaulted Bengaluru buyer should understand.

The short answer. If a Bengaluru builder defaults on possession, advertising, carpet area, or quality, you can file a complaint with K-RERA online under Section 31 of the Act for a nominal fee and seek refund with interest or compensation. The trade-off: K-RERA has disposed of 10,322 of 12,772 complaints (over 80 percent), but enforcement of recovery is slow, with only 292 of more than 1,500 execution applications in Karnataka ending in actual recovery.

Quick facts: In Karnataka, as of March 2026, K-RERA had received 12,772 complaints and disposed of 10,322 of them, a disposal rate above 80 percent, per a Real Estate Law Journal analysis.

This guide is buyer-side. It walks through the grounds that hold up, the K-RERA portal process, the difference between the Authority, the adjudicating officer and the appellate tribunal, and the relief you can realistically expect.

What counts as a builder default you can take to K-RERA?

A builder default is any breach of the promoter's obligations under RERA, and four grounds dominate Bengaluru complaints. The first is possession delay, where the builder misses the handover date written into the registered agreement for sale. The second is false or misleading advertising, where the brochure, sanctioned plan or amenities promised at booking differ from what is delivered, a breach tied to Section 12 of the Act. The third is structural or quality defects, which the promoter must rectify free of cost for five years from possession under Section 14(3). The fourth is a carpet-area shortfall, where the flat handed over is smaller than the carpet area you paid for. Understanding how carpet area is measured matters here, and our explainer on carpet area versus super built-up area under RERA in Bengaluru shows why the gap is often larger than buyers assume.

Who can file, and against whom, under RERA complaint filing Karnataka rules?

Any aggrieved person can file under Section 31 of the RERA Act, and that includes individual allottees, a group of buyers, or a registered allottees' association. You file against the promoter (the builder or developer), and you can also name an agent where mis-selling is involved. The project must be one that falls within RERA, which broadly covers projects above the registration thresholds launched or ongoing after the Act took effect. A practical point for Bengaluru buyers: check the project's RERA registration number on the K-RERA portal before filing, because the registration page records the promised completion date, the sanctioned plan and the carpet area, all of which become your evidence. A missing or lapsed registration is itself a serious red flag and a separate ground for action.

How do you actually file on the K-RERA portal, step by step?

You file online at the official K-RERA portal, and the process is self-service. Start at the Karnataka RERA complaint registration page and create a complainant login with your mobile number and email if you are a first-time user. Once logged in, you enter your details as complainant, the promoter's details as respondent, and a clear statement of facts with the specific relief you want. You then upload supporting documents, typically the registered agreement for sale, the booking receipt, payment records, the builder's communications, and the brochure or advertisement you relied on. The portal collects a complaint fee online at submission. Note on the fee: published secondary sources disagree on the exact amount and the official fee page could not be confirmed during this writing, so we do not state a rupee figure here; verify the current fee on the portal before you pay. After submission you receive an acknowledgement or complaint number, which you should keep for every future hearing and follow-up.

Authority, adjudicating officer or appellate tribunal: who decides what?

The forum depends on what you are claiming. The Authority and its bench hear the core complaint and can direct refund with interest under Section 18, order the builder to complete and hand over the unit, or rectify defects. When you specifically claim compensation for loss, the matter is referred to an adjudicating officer, who is empowered under Section 71 to assess compensation under Sections 12, 14, 18 and 19. If either side is unhappy with the order, an appeal lies to the Karnataka Real Estate Appellate Tribunal under Section 43, and it must be filed within 60 days of the order. There is a buyer-friendly catch for builders here: under Section 43(5), a promoter appealing an order to refund money to an allottee must first deposit the total amount payable, including interest and compensation, before the appeal is entertained. The Supreme Court has upheld that pre-deposit condition as valid, which limits a builder's ability to stall through appeals.

What relief can a Bengaluru buyer actually seek and win?

The headline relief is a choice the buyer effectively controls under Section 18. If the builder fails to hand over on time, you can either continue with the project and claim interest for every month of delay, or exit the project and claim a full refund of the amount paid, with interest. K-RERA commonly fixes that interest at SBI MCLR plus 2 percent, the rate it applied in the January 2026 Ozone Infra order. Beyond Section 18, you can seek compensation through the adjudicating officer for proven losses, rectification of structural defects under the five-year warranty, and proportionate adjustment where carpet area falls short. Possession is also linked to compliance documents, so before you accept handover it is worth reviewing our guide to the occupancy certificate and completion certificate in Bengaluru, because a unit handed over without a valid occupancy certificate is itself a deficiency you can raise.

How long does it take, and where does the system fall short?

The statute sets an ambitious target, and reality lags it. RERA envisages disposal of a complaint within 60 days, but in practice K-RERA orders commonly take several months and contested matters can run a year or more across multiple hearings. The deeper problem is after the order. Getting K-RERA to rule in your favour is increasingly likely given the 80 percent-plus disposal rate, but converting that order into recovered money is the weak link: of more than 1,500 execution applications filed in Karnataka, only 292 led to actual recovery, a recovery rate around 12 percent as of March 2026. That is the trade-off no buyer should ignore. A RERA order is real and enforceable, with execution powers including recovery as arrears of land revenue, but you should budget time and persistence for the execution stage, especially against a financially stressed builder.

What should you prepare before you click submit?

Strong evidence decides RERA complaints, so assemble it before filing. Use this seven-point buyer checklist.

1. Confirm the project's RERA registration number and note the promised completion date recorded on the K-RERA portal.
2. Keep the registered agreement for sale, which is the single most important document in any default claim.
3. Compile all payment proofs, receipts and bank statements showing the total amount paid to the promoter.
4. Save the original brochure, advertisement and sanctioned plan to prove false advertising or carpet-area shortfall.
5. Preserve every email, letter and message from the builder, especially any admission of delay.
6. Decide your relief in advance: refund and exit, or stay invested and claim delay interest under Section 18.
7. Verify the current complaint fee on the official portal and retain the acknowledgement or complaint number after submission.

Can I file a K-RERA complaint myself without a lawyer?

Yes. K-RERA complaint filing is designed as a self-service online process, and many allottees file and represent themselves at hearings. A lawyer helps in complex, high-value or contested matters, particularly at the appellate or execution stage, but engaging one is optional and not required to register the complaint or seek refund with interest.

What interest rate does K-RERA award for possession delay?

K-RERA commonly awards delay interest at the State Bank of India Marginal Cost of Funds based Lending Rate (SBI MCLR) plus 2 percent, the rate it applied in its January 2026 order against Ozone Infra Developers. Interest typically runs from the promised possession date until the unit is handed over or the amount is refunded.

Can a group of Bengaluru buyers file one joint complaint?

Yes. Multiple allottees in the same project can file collectively, and registered allottees' associations frequently bring joint complaints against a defaulting promoter. Joint filing pools evidence and cost, strengthens the case, and is common in large delayed projects, though each buyer's specific relief, such as refund or interest, is still assessed on individual records.

If I win, why might I still not get my money quickly?

Because winning the order and recovering the money are separate stages. K-RERA disposes most complaints, but execution is slow: only about 292 of more than 1,500 execution applications in Karnataka led to actual recovery as of March 2026. Against a financially stressed builder, enforcement through execution proceedings can take considerable additional time and persistence.

Sources used for the verified figures and procedure in this article include the Real Estate Law Journal analysis of Karnataka complaint and recovery data and reporting by LiveLaw on the K-RERA Ozone Infra order.

Last updated 2026-06-26. PropNewz Team.