A Kasba Flat Renovation Checklist Before You Hire Anyone

Stand in one of the lanes behind Kasba Golpark on a weekday morning and you will usually spot at least two flats mid-renovation, tarpaulin flapping off a balcony, a mason's handcart blocking half the road, and a homeowner on the phone arguing with someone about a drawing that was never actually submitted anywhere. That is basically what a flat renovation in Kasba looks like when nobody made a checklist before signing a contract, and it is exactly why you are reading this before you hire anyone, which is the smart order to do things in.

We are Studio Contour, an architect and interior design studio founded in 2014 and based out of New Town, Kolkata, and in that time we have delivered 330+ buildings across Kolkata, New Town and Salt Lake, a fair number of which were exactly this kind of job, an older flat in a dense KMC ward that needed real planning before the first wall came down. So this checklist is not theory, it is the list we actually run through with a Kasba client before we let anyone pick up a hammer.

The freelancer-vs-firm decision you're actually making in Kasba

Before the checklist itself, there is a decision underneath it that most people skip past, which is whether you hire an independent freelancer architect or contractor, or a firm that carries the design, the drawings, and the site execution under one roof. Both routes can work, and we would be lying if we said otherwise, so let's be honest about the trade-off instead of pretending it's obvious.

A freelancer or a small local contractor is usually cheaper on paper, moves fast because there's no internal process to slow them down, and for a straightforward cosmetic job, say a kitchen and two bathrooms in a 900 to 1100 square foot flat, that can genuinely be the right call. The catch here is accountability, because if the plumbing stack leaks into the flat below six months later, or the electrical load trips every time the AC and the geyser run together, you're now chasing one person who may or may not still be answering your calls, and there's no design record, no structural sign-off, and no one to hold the site accountable to a drawing. A firm costs more up front, roughly 10 to 20 percent more by our own comparison across similar-sized jobs, but you get a single point of responsibility from the first measurement to the final handover, which matters a lot more in an old KMC building than it does in a five-year-old New Town tower.

Independent Freelancer/Contractor	Design-Build Firm (like us)
Lower upfront quote	10-20% higher upfront quote, fewer surprises later
Single person handling design + execution	Dedicated design, structural, and site teams
No formal drawing record	Full drawing set, kept on file
Accountability ends when the job ends	Warranty period and post-handover support
Works well for small cosmetic jobs	Works well when structure, plumbing, or sanction is involved

For a full kitchen tear-out, a bathroom relocation, or anything touching a load-bearing wall in a building older than 15 years, we would tell you honestly to go with a firm, and we've written more on this exact dilemma in how to hire an interior designer in New Town, Kolkata if you want the fuller version of that argument.

What makes Kasba flats different from a New Town shell

Kasba is not New Town, and treating a renovation checklist for the two areas as interchangeable is where a lot of Kasba renovations go sideways. Most of the flats we've worked on around Kasba, whether near the EM Bypass side or deeper into the older housing stock closer to Kasba Bazar, sit in buildings anywhere from 15 to 40 years old, which means the plumbing risers, the electrical wiring gauge, and often the structural drawings themselves were done to a completely different code than what applies today. Unlike New Town, which falls under NKDA jurisdiction with its own set of building rules, Kasba sits within Kolkata Municipal Corporation limits, so the sanction process, the FAR calculation, and the renovation permission rules you're working with are KMC's, not NKDA's, and a contractor who only knows the New Town side of things will genuinely get this wrong.

The practical result on site is that we almost always find one of three things once we open up an old Kasba flat: a shared plumbing stack that was never isolated properly, a slab that's been drilled into by a previous "renovation" without anyone checking the rebar layout, or electrical wiring that's still on the original 1990s load capacity while the household has since added two ACs, a washing machine, and an induction stove. None of that shows up on a WhatsApp quote. It shows up once demolition starts, and by then you want a team that can read it and adjust the plan on the spot rather than one that's already moved on to the next job. This is also where the structural versus cosmetic renovation distinction actually earns its keep, because what looks cosmetic on the surface in an older Kasba flat is very often structural underneath.

The checklist itself

So here is the actual list, the one we hand a Kasba client before we discuss a single design idea, because the sequence matters more than people expect and getting it in the wrong order is how budgets and timelines both blow up.

• Confirm the firm is verified against Council of Architecture registration and can show past project photos, not just renders
• Get a written scope with a room-by-room breakdown, not a lump-sum number
• Ask specifically how they handle KMC renovation permission if the work touches structure or the building's external face
• Request a site survey before any quote is finalized, including a plumbing stack and electrical load check
• Confirm payment is milestone-based against completed work, never a large upfront lump sum

On that Council of Architecture point specifically, it is worth checking directly through the Council of Architecture, because in Kolkata's renovation market there are plenty of people calling themselves architects or designers who never registered anywhere, and while that alone doesn't make someone incapable, it does mean there's no professional body holding them accountable if something goes wrong on your site. We've laid out more of these warning signs in red flags when hiring an interior designer in New Town, and most of it applies just as much south of the Bypass in Kasba as it does in New Town itself.

KMC sanction, and why "it's just a renovation" doesn't always hold

A lot of homeowners assume renovation means no paperwork, and for purely internal cosmetic work, flooring, painting, wardrobes, a new modular kitchen layout that doesn't touch plumbing risers, that's largely true. The moment you're changing a bathroom's footprint, adding a balcony enclosure, altering the external face of the unit, or doing anything that affects a shared wall or the building's structure, you're in KMC renovation permission territory, and skipping that step is how flats end up with stop-work notices mid-project, which is a genuinely painful thing to deal with once tiling has already started.

We keep this straight for clients partly because we've done the Kolkata Municipal Corporation building sanction process enough times to know which renovations trigger it and which don't, and because understanding floor area ratio rules under KMC's FAR framework matters even on a renovation if you're adding any enclosed area at all, a common ask in Kasba flats that want to convert an open balcony into usable space. This is exactly the kind of due diligence step that a firm with local KMC experience walks through as a matter of course, and that an out-of-area or purely execution-focused contractor may not even flag until it's a problem.

What 330+ buildings across Kolkata taught us about old-stock renovations

The honest pattern across our portfolio, whether it's a Salt Lake cooperative renovation or an older KMC-jurisdiction flat like the ones common around Kasba, is that the projects that go smoothly are the ones where the site survey happened before the design, not after, and where the drawing set was locked before demolition started rather than being figured out as we went. We've applied that same discipline on projects like our Baguihati residence, which sits in a similarly established, older part of Kolkata rather than a newer planned township, and the lessons carry over directly to Kasba: check the stack, check the slab, check the sanction status, in that order, before a single design decision gets made. If you want to browse more of that body of work directly, our full projects page has the range across residential and commercial jobs.

At the end of the day, this track record is also why we can quote a realistic 8 to 12 week turnaround on a typical 2-3BHK Kasba flat renovation rather than the "6 weeks guaranteed" line that gets thrown around by contractors who haven't actually accounted for a KMC permission cycle or a plumbing rework. We would rather tell a client 10 weeks and land in 9, than promise 6 and land in 14 with the kitchen unusable the whole time.

The 8-12 week timeline, and what actually eats the time

1. 01Week 1-2: site survey, measurement, plumbing and electrical audit
2. 02Week 2-4: design finalization and KMC permission filing if required
3. 03Week 4-6: demolition, structural or plumbing rework, electrical rewiring
4. 04Week 6-10: civil work, false ceiling, modular kitchen and carpentry
5. 05Week 10-12: finishing, fixture installation, snagging and handover

Most delays we see in Kasba specifically trace back to two things, an electrical or plumbing surprise that wasn't caught in the survey stage, or a permission filing that got started late because the scope of work wasn't clear until demolition had already begun. Both of those are avoidable with the sequence above, and both are exactly what a proper survey and a locked scope are meant to prevent. This is also where services like renovation and remodeling and false ceiling and lighting design need to be planned together rather than bolted on separately, since a false ceiling plan that ignores where the AC ducting and the rewired electrical lines are going is a plan you'll be redoing.

Making the call

If you've read this far, you already know more about what a Kasba flat renovation actually requires than most of the quotes you'll get this week will tell you upfront, and that's really the point of a checklist like this, it should make the gap between a serious firm and a fast quote obvious before you've signed anything or handed over a deposit. We've built our studio around exactly this kind of project for twelve years now, we know the Kasba area's building stock, we know KMC's process, and we know what an old plumbing stack looks like before it becomes a leak into your neighbour's ceiling. So when you're comparing that low quote against a firm quote that seems higher on paper, the honest question to ask is not which number is smaller, it's which one accounts for everything your flat is actually going to need. If you'd rather have that conversation directly than keep reading checklists, get in touch with us and we'll walk your specific flat through this same process before you commit to anyone.