13 Navi Mumbai and Panvel builders, checked on their MahaRERA record

“Go with a big builder.” You’ll hear it from your father, from a colleague, and from the man at the site office. It sounds safe. But in Navi Mumbai, big can mean big hoardings, not a clean record.

So the shortlist at home gets stuck. One of you trusts the famous name. The other has heard about a tower that took years longer. Who do you believe when you’re about to hand over your savings?

My honest answer: judge a builder by what it has already done here, not by its ads. We read every registration on MahaRERA (the state’s official register of building projects) for Navi Mumbai and Panvel. We could judge 13 builders on their record. Hiranandani’s Fortune City, Shree Riddhi Siddhi Constructions and Marathon lead, and two names on the list aren’t famous at all.

A word on money first. We earn a fee from a builder when a family we help books with them. That’s exactly why the whole method is here, and why commission never changes rank. None of the top three has a Navi Mumbai project on our site. (Riddhi Siddhi Exotica in Taloja, which we do list, is registered to a different promoter.)

Hiranandani, Shree Riddhi Siddhi and Marathon lead the 13

The three leaders have the cleanest records among builders big enough to judge. “Past-date” below means a project whose original completion date has passed. Here are all 13, with every number behind each score.

Rank	Developer	Extension certificates (past-date projects)	Google rating (reviews)	Score: record + reviews + size
1	Hiranandani (Fortune City)	0 of 19	4.3 (841)	77.5 = 40 + 18.5 + 19
2	Shree Riddhi Siddhi Constructions	0 of 13	4.9 (14)	75.2 = 40 + 19.2 + 16
3	Marathon Group	3 of 25	3.9 (1,245)	74.7 = 35.2 + 9.5 + 30
4	Gami Group	1 of 6	4.4 (466)	72.9 = 33.3 + 20.5 + 19
5	Tricity Realty	0 of 5	4.2 (388)	68.6 = 40 + 16.6 + 12
6	Mahavir Construction	0 of 6	4.6 (7)	64.5 = 40 + 16.5 + 8
7	Satyam Developers	0 of 3	4.1 (233)	61.9 = 40 + 12.9 + 9
8	Neelkanth Group	1 of 9	3.9 (127)	59.9 = 35.6 + 8.3 + 16
9	Arihant Superstructures	1 of 5	4.0 (226)	54.6 = 32 + 10.6 + 12
10	Shree Sai Developers	4 of 5	4.8 (36)	41.8 = 8 + 25.8 + 8
11	Paradise Group	4 of 5	4.3 (418)	41 = 8 + 18 + 15
12	Adhiraj Constructions	7 of 10	no listings found	38 = 12 + 15 + 11
13	Atharva Developers	4 of 8, plus 2 on MahaRERA’s lapsed-completion list	no listings found	23 = 0 + 15 + 8

Two scores rest on very few reviews: Shree Riddhi Siddhi (14) and Mahavir Construction (7). Their review points were pulled towards the middle, so the stars alone didn’t lift them.

The simple rule: shortlist by the builder’s record, then decide by the project’s own MahaRERA page. A good name is a good start, not a promise for your tower.

An extension certificate is a signal, not a stopwatch

The third column counts extension certificates. Each one means a builder asked MahaRERA for more time and got it. It doesn’t tell you how many months a family actually waited.

Some extra time never shows up as a certificate. MahaRERA gave every project six more months in March 2020 and again in April 2021, during Covid. It added four months in August 2026. Those blanket extensions don’t count against anyone here.

So a clean column isn’t proof of on-time keys. A project whose date fell inside those windows can look clean here. Use the column to ask better questions, not to stop asking.

How we scored them: record first, size last

Each builder got up to 100 points: 40 for its record, 30 for what people say, and 30 for how much it has built here. We started from MahaRERA’s own project search, which anyone can use.

• Record, 40 points: the share of a builder’s past-date projects that needed no extension certificate. A builder needed at least three such projects to be judged.
• What people say, 30 points: the Google rating across the builder’s own Navi Mumbai buildings and offices, weighted by the number of reviews. Fewer than 50 reviews earned only part of the credit, either way.
• Size here, 30 points: the projects a builder has registered in these pincodes since 2017. Thirty or more earns full marks.

Most lists stop at size. We gave it 30 points, not 100. Size shows a builder can sell. It doesn’t show whether it hands over on time.

Seven of the 13 have homes on our site, some on a first-home budget

If your budget is tight, the record matters even more, because a longer wait hurts more. Which buyer are you?

Everything else is in our Kharghar projects and the other area pages.

What each one builds, and the one question to ask

Here’s where each builder works, what its record shows, and the one question I’d ask.

1. Hiranandani (Fortune City, Panvel)

All 19 registrations are in one township on the old Mumbai–Pune highway near Panvel. CRISIL’s rating note says the company behind it belongs to Niranjan Hiranandani’s family group.

Nine of its dates fell in 2020, when Covid extensions applied to everyone. Ask how long your tower took from booking to keys.

2. Shree Riddhi Siddhi Constructions (Adinath buildings)

You’ve probably never heard of this one. Its 16 registrations are mostly “Adinath” buildings on the Panvel side, with one in Kamothe. None of the 13 past their date has an extension certificate.

These are smaller buildings with only 14 Google reviews. Ask to walk into one they’ve already handed over.

3. Marathon Group (Nexzone, Panvel)

Marathon has 35 registrations at Nexzone near Palaspe, the most of any builder in our read of MahaRERA. Three of its 25 past-date towers have an extension certificate.

It has the most Google reviews here, 1,245, at 3.9 stars. Read the recent ones, not just the average.

4. Gami Group

Gami builds in ten pincodes, from Ghansoli to Taloja. One of its six past-date projects has an extension certificate, and its listings average 4.4 stars from 466 reviews.

5. Tricity Realty

Tricity has 12 registrations across Kharghar, Kalamboli, Panvel and Nerul. None of its five past-date projects has an extension certificate, and it’s rated 4.2 from 388 reviews.

6. Mahavir Construction (Panvel)

Another small name. All eight of its projects are on the Panvel side. None of the six past their date has an extension certificate, but only seven Google reviews exist.

7. Satyam Developers (Kharghar, Taloja, CBD Belapur)

Satyam builds through several companies: Satyam Infra Realty, the Metro Satyam companies, and projects registered in Rajesh Dharamvir Gulati’s own name. Together they have nine registrations here. If you see “Gami Satyam” on a brochure, that project is counted under Gami.

None of its three past-date projects has an extension certificate, and its listings average 4.1 stars from 233 reviews. Two of those dates, in 2020 and 2021, fell in the Covid windows. Ask which company signs your agreement, and how long its last handover took.

8. Neelkanth Group

Neelkanth has 16 registrations, mostly in Kharghar, Taloja, Kamothe and Panvel. One of its nine past-date projects has an extension certificate. Its listings average 3.9 stars from 127 reviews.

9. Arihant Superstructures

Arihant is a listed company. Its Navi Mumbai projects sit under subsidiaries such as Arihant Aashiyana and Arihant Vatika Realty. One of its five past-date projects has an extension certificate.

10. Shree Sai Developers

Google reviewers rate it 4.8, from only 36 reviews. But four of its five past-date projects have an extension certificate. That pulls its record score down to 8 of 40.

Ask the site office, in writing, which date applies now and why it changed.

11. Paradise Group

Paradise has 15 registrations here, four of them in Kharghar, and 418 Google reviews at 4.3 stars. Four of its five past-date projects have an extension certificate.

That doesn’t make it a bad builder. It means the brochure’s date is the one to question, for any of its towers.

Adhiraj and Atharva, at 12 and 13, are in the table with the same measures as everyone else.

Seven big names we couldn’t judge yet

Wadhwa, Raheja Universal, Delta, Platinum, L&T and the two Today groups all build here. Too few of their projects here have reached their original date to judge.

Developer	MahaRERA projects here	Past their original date	Google rating (reviews)
Wadhwa Group	29	2	3.3 (242)
Raheja Universal	12	1	4.2 (919)
Delta Group	8	1	4.3 (569)
Platinum Group	8	1	4.7 (88)
L&T Realty	8	2	4.2 (260)
Today Group (Today Global)	10	2	3.6 (519)
Today Royal Group	8	2	4.3 (91)

“Today” is two separate families of companies here. Today Global, with Today Prachar, has one extension certificate on its two past-date projects. Today Royal has none on its two. Both have more towers due between 2026 and 2028, so check again before you book.

Leaving them out isn’t a verdict. It’s an honest “too early to say”. If you’re looking at one of their towers, the check below matters even more.

A good builder doesn’t guarantee your tower

Here’s the fair objection. Even a builder with a clean record can slip on one tower. And a small builder with three good buildings may suit you better than a famous one.

Think of it like choosing a school. Good results help, but you still meet the class teacher. The builder’s record is the school. Your tower is the class.

So use this list to shortlist, never to decide. Then check the one project you’re about to pay for. It takes ten minutes on MahaRERA’s own site.

1. Search the number. Type the project’s MahaRERA number into the project search. It should show the same name and builder as the brochure.
2. Read the original date. Open the registration certificate. Its completion date is what the builder first promised MahaRERA.
3. Look for an extension. If the listing shows an extension certificate, open it and note the new date.
4. Check the progress reports. Builders file them every three months. A gap is worth asking about.
5. Ask in writing. Email the site office: which date are you working to now, and does it match our agreement?

If your date slips, the law still protects you

An extension from MahaRERA doesn’t cancel what you’re owed. Under Section 18 of the RERA Act (the 2016 law that created MahaRERA), you can claim interest for every month of delay, or withdraw and get your money back with interest.

Consumer lawyers say an extension doesn’t free the builder from paying that interest for delay. Why does it matter so much? Because every extra month usually means rent and a loan instalment together.

In our earlier worked example, six months of rent plus loan interest came to about ₹2,90,000. That’s an illustration, not a real family, but it shows why the record is worth ten minutes.

When to pay more for a big name, and when not to

A famous builder often costs more for the same flat. Is the extra worth it for your family? It depends on what you can’t afford to go wrong.

Either way, the rule doesn’t change: shortlist by record, decide by the project’s own page. Ask us, and we’ll check that page with you.

Questions buyers ask

Who is the No. 1 builder in Navi Mumbai?

On our scoring, Hiranandani’s Fortune City in Panvel came first, with no extension certificate on its 19 past-date registrations. But “No. 1” depends on what you weigh. Count only size, and Marathon leads here.

Does an extension certificate mean the builder is bad?

No. MahaRERA grants extensions for genuine reasons, and one on a single tower says little. A pattern across many projects is what should make you ask more.

Why are some famous builders missing?

Some have too few projects here that have reached their original date. Others build mostly outside these 13 pincodes. Missing from this list isn’t a mark against them.

Did any builder pay to be on this list?

No. We do earn fees from builders when families book through us, but commission never changes rank. The scores come only from MahaRERA and Google.

I’m a builder and I think a number is wrong. What now?

Write to mail@10projects.ai with the MahaRERA number. We’ll recheck it on MahaRERA’s site and correct the table if we got it wrong.

Your shortlist doesn’t need to be long: two or three builders with a clean record, one project you’ve checked, and a date in writing.

Fill in the form on this page, and our advisor Raj will go through the MahaRERA page with you, line by line. Let’s pick the builder together, and then the home.

How we checked: we read MahaRERA’s project search for 13 pincodes in Navi Mumbai and Panvel (source 1). We matched each registration to its builder using our own project pages and named company links (5, 6).

We opened the shortlisted builders’ certificates for each original date (2). We checked MahaRERA’s expired and suspended lists (3). Ratings come from Google (4), and extensions are explained in Section 6 (8).

Some builders, like Satyam and Today, work through several companies. We joined them only where our own project pages, or the builder’s own name in the company name, link them. One more rule: a company name made only of common words, like “Sai” or “Krishna”, counted for a builder only when the project carried the builder’s name. Checked by the 10Projects team on 31 October and 1 November 2026.

Buying your first home here? Our six steps to buying a flat in Navi Mumbai put this in order, from the loan to the keys.