What "turnkey" really means, and the seven things most quotes leave out

"Turnkey" promises something simple. You hand over the plot, the builder hands back the keys, and everything in between is someone else's problem.

The trouble is that the word has no fixed definition. One contractor's turnkey construction quote includes the compound wall, the sump and the wardrobes. Another's stops at a plastered shell with a coat of paint. Both call it turnkey, both quote a rate per square foot, and the cheaper one usually turns out to be the more expensive house.

This is a guide to reading a turnkey quote the way a site engineer would: line by line, starting with the seven items most often missing.

What turnkey construction should mean

A true turnkey contract makes one party responsible for the whole job: design, approvals, structure, services, finishes and handover. You agree a scope and a price, and the contractor carries the coordination between disciplines.

That coordination is the real value. In a conventional build, the architect draws, the contractor builds and the interior designer arrives later, and every gap between them is yours to manage. When a beam lands where a wardrobe was meant to go, three parties can each reasonably say it isn't their problem. A turnkey contract makes it one party's problem. That's the point.

But the coordination is only as complete as the scope. Which brings us to the quote.

The per-square-foot trap

Most quotes lead with one number, say ₹3,200 per sq ft. Before comparing two such numbers, ask three questions.

Per square foot of what? Built-up, carpet and "super built-up" area can differ by 20% or more on the same house. Balconies, terraces, the staircase headroom and the stilt floor are often counted at different rates, or not at all.

At what specification? A rate means nothing without a specification sheet naming the cement grade, steel brand, wall material, window system, flooring, sanitaryware, electrical fittings and paint system.

What's excluded? The exclusions page is the most important page in any turnkey house construction quote. If a quote doesn't have one, ask why.

The seven things most quotes leave out

1. Approvals and statutory fees

Plan sanction, structural stability certificates, fees to the authority and the occupancy certificate at the end. Some quotes include the work of getting approvals but not the fees. Some include neither. In Bengaluru, paperwork and utility connections together can run to several lakh rupees for an independent home, before a brick is laid.

2. Utility connections, temporary and permanent

The site needs temporary power and water for the whole build. The finished house needs permanent connections from BESCOM and BWSSB, each with its own deposit and inspection, and larger homes can need extra electrical infrastructure. Check who applies, who pays, and who covers water tankers if the temporary supply runs short.

3. Waterproofing, specified properly

Almost every quote mentions waterproofing. Few say where, with what system, or for how long it's guaranteed. A complete scope covers foundations and basements, sunken bathroom slabs, balconies, the terrace and any planters or water features. It names the system rather than saying "waterproofing as required". Leaks are the most common complaint after handover, and they're decided in the first weeks on site, long before anyone sees a finish.

4. Joinery: kitchen, wardrobes and panelling

This is where the largest gaps appear. Many quotes stop at "civil and finishing" and leave the kitchen, wardrobes, vanities and wall panelling to a separate interiors contract. On a premium home, that can be a fifth or more of the final spend. If joinery is included, the quote should name the carcass material, the shutter finish and the hardware brand.

5. External works

The compound wall, gate, driveway, sump, overhead tank, rainwater harvesting, sewer connection, external lighting and landscaping. On a large plot, these are a project in their own right. They're also the items most often marked "extra, as per actuals".

6. Allowances that are really placeholders

Watch for lines like "flooring at ₹150 per sq ft" or "sanitaryware allowance ₹2 lakh". These are provisional sums. The contractor has priced a basic product, and whatever you actually choose is charged as an extra. A quote full of allowances looks competitive and isn't. Ask what each allowance buys, and ask to see a sample.

7. What happens after handover

Who fixes the hairline crack that appears in the first monsoon, the door that swells, the drain that backs up? A complete contract defines a defect liability period, usually twelve months, when the contractor returns at their own cost. It should also include a handover file: as-built drawings, warranty cards, vendor contacts and the waterproofing guarantee. Two years later, that file is worth more than you'd expect.

Three clauses that protect you

1. A fixed scope tied to drawings. The price should refer to a specific drawing set and specification sheet. Anything outside them is a variation.
2. Variations priced before work, not after. Changes will happen. Every variation should be quoted and approved in writing before it's carried out.
3. Escalation, defined. Steel and cement prices move. If the contract allows escalation, it should name the materials, the price index and the threshold that triggers it. An open-ended escalation clause turns a fixed price into an estimate.

Why one contract usually costs less

It's tempting to split the job: an architect for drawings, the cheapest contractor for the shell, an interiors firm for the rest. On paper, each piece is cheaper.

In practice, the costs show up at the joins. Electrical points land in the wrong place for the furniture. Plumbing gets chased into finished walls. The interiors team measures a room that's 40 mm off the drawing and remakes a wardrobe. Each of these is small. Together they add weeks, rework and friction, and none of them appears in any of the three quotes.

When design, civil work and interiors are drawn together and built by one team, those questions get answered on paper, months before anyone stands on the slab. That's what turnkey is supposed to buy.

A turnkey construction checklist

Before you sign, make sure you can answer yes to each of these:

• The rate states which area it applies to, and how balconies, terraces and stilt are counted.
• A specification sheet names materials and brands, not just categories.
• Approvals, fees and the occupancy certificate are clearly in or out.
• Temporary and permanent utility connections are assigned.
• Waterproofing names the areas, the system and the guarantee period.
• Joinery is either fully specified or clearly excluded.
• External works are listed item by item.
• Every allowance is explained, with a sample.
• Variations must be priced and approved before work.
• A defect liability period and a handover file are written in.

A quote that passes this list may not be the lowest. It will be the one that still matches your final bill.

Planning a home in Bengaluru? Vismit Ventures delivers architecture, civil works, construction and interiors under one contract, with a scope you can read before you sign. Tell us about your plot.

Sources: Liza Homes, House construction cost breakdown, Bengaluru 2026 (approval and connection cost range). Everything else is general construction practice.