A homeowner came to Mason & Mortar for a construction quote. They reviewed our proposal, compared it with another contractor's quote, and chose the other contractor — who was ₹5 lakhs cheaper. We wished them well and moved on.
Here is what happened. The competing contractor's quote looked lower because it was. But it was also incomplete. After plastering and white cement work was done, the contractor stopped. He told the homeowner that the remaining amount in the contract was not sufficient to complete the remaining work. After several rounds of negotiation, the homeowner paid an additional ₹6 lakhs to get the project finished — ending up paying ₹1 lakh more than Mason & Mortar's original quote — with materials that were still below the specification we had originally proposed. The homeowner tried to save ₹5 lakhs. They ended up spending ₹1 lakh more and got less.
Here is what happened. The competing contractor's quote looked lower because it was. But it was also incomplete. After plastering and white cement work was done, the contractor stopped. He told the homeowner that the remaining amount in the contract was not sufficient to complete the remaining work. After several rounds of negotiation, the homeowner paid an additional ₹6 lakhs to get the project finished — with materials that were still below the specification we had originally proposed. The homeowner had tried to save ₹5 lakhs. They ended up spending ₹6 lakhs more and got less.
This is not an isolated incident. It is a pattern. And understanding why it happens is the most important thing you can do before choosing how to build your home in Chennai.
Want to understand how Mason & Mortar's transparent BOQ system works before you decide?
See Our PMC Services→Still deciding? See our full homeowner guide with a live PMC fee calculator.
Who's Protecting Your Dream Home?→What Is Turnkey Construction — and What Does the Per Sqft Rate Actually Cover?
Turnkey construction means one contractor handles everything — design, procurement, execution, and handover. You agree on a per sqft rate, sign a contract, and in theory receive a completed home at the end. In practice, the per sqft rate covers the cost of the building measured outer wall to outer wall — and almost nothing else.
What Is Usually NOT Included In A Turnkey Per Sqft Rate:
- Septic tank
- Water sump
- Overhead tank (OHT)
- Compound wall
- Gate and boundary fencing
- Parapet wall treatment
- Waterproofing — some contractors charge this separately
- Elevation cladding and exterior design features
- Premium switch brands, marble or granite upgrades
- Landscaping and driveway
“The per sqft rate is the price of the box. Everything that makes it a home is extra.”
Most homeowners discover this list only after signing the contract. By then, each addition is a negotiation — and the homeowner is negotiating from a weak position because construction has already started.
The Material Change Problem — Why Turnkey Locks You In
When a turnkey contractor quotes a project, they specify materials in the contract. The per sqft rate is built around those materials — specific tile brands, cement brands, electrical wire specifications, paint grades. This is not necessarily dishonest. It is how the pricing works.
The problem comes when you, as the homeowner, want to make changes during construction. And most homeowners do — because when you see your home taking shape, you start to have opinions about it that you did not have when you signed the contract.
Real Situation
Tiles to Granite — The Hidden Cost Cascade
A client on one of our projects originally specified tiles for the living area. During construction, they decided they wanted granite instead. In a turnkey contract, this single change triggers a cost cascade: the difference in material cost between tile and granite, the difference in laying charges, the difference in adhesive and jointing material, and the contractor's margin on managing the change. What looks like a simple upgrade becomes an expensive negotiation. Under PMC, the client purchases materials directly — they simply choose granite instead of tiles from the start, or change their mind without a markup.
There is another side to this that most homeowners never consider. In turnkey, when you save on one item — say, you choose a simpler electrical switch brand and save a few thousand rupees — that saving does not come back to you. It stays with the contractor. Under PMC, when you save on one item, that money stays in your budget and you can redirect it toward something you care about more — better paint, a stronger gate, an extra coat of waterproofing.
“In turnkey, your savings belong to the contractor. In PMC, your savings belong to you.”
The Material Price Risk — Who Bears It?
A turnkey contractor quotes a per sqft rate on the day you sign the contract. Construction materials — steel, cement, sand, bricks — have prices that fluctuate. Between the day you sign and the day your slab is cast, prices may have moved. Between foundation and finishing, prices may have moved again.
Most turnkey contracts do not have clear escalation clauses. When material prices rise, the contractor faces a choice: absorb the loss, reduce quality, or stop work and demand more money. We have seen all three happen on projects in Chennai and along ECR. The homeowner who accepted a quote ₹5 lakhs below ours experienced the third option — the contractor stopped after plastering and demanded an additional ₹6 lakhs to continue.
What Happens Under PMC
Material Price Risk Stays Transparent
Under PMC, you purchase materials directly or through verified vendors at market rates. There is no middleman absorbing or passing on price risk silently. When prices rise, you see it immediately and can make informed decisions — adjust specifications, bring in alternative vendors, or accept the increase knowingly. Nothing is hidden.
When Should You Choose Turnkey?
Turnkey is genuinely the right choice for some homeowners. If you are a busy professional or an NRI who cannot be involved in material decisions, contractor coordination, or day-to-day construction management — and you have a fixed budget and fixed requirements — turnkey with a trustworthy, transparent contractor makes sense.
Turnkey Works Well When:
- You have fixed, clearly defined requirements that will not change
- You are not available to manage decisions during construction
- You trust the contractor's specification completely
- You have reviewed the full specification — not just the sqft rate
- The contract clearly lists every exclusion
- You have verified past projects and spoken to past clients
When Should You Choose PMC?
PMC is the right choice when you want to be involved in your project — when the materials, the finishes, the quality, and the decisions matter to you. It is also the right choice when your budget is tight, because PMC gives you visibility and control over every rupee spent.
PMC Works Best When:
- You have specific requirements for finishes, materials or design
- You want full transparency on where every rupee is going
- You want the flexibility to change material choices without penalty
- You want an independent engineer watching over quality on your behalf
- You want comparative quotes from multiple contractors — not one contractor's price
- You want savings on one item to fund improvements on another
Building from UAE or abroad? See how our NRI PMC system gives you full visibility remotely.
NRI Construction Services→Want to see exactly what PMC would cost for your project? Try our live calculator.
See The PMC Fee Calculator→The One Thing Most Homeowners Get Wrong
The most common mistake is comparing a turnkey quote and a PMC quote purely on the headline number. A turnkey quote of ₹1.2 crores and a PMC quote of ₹1.3 crores look like a ₹10 lakh difference. But the turnkey quote excludes the sump, septic tank, compound wall, waterproofing, and parapet. Add those back in, and the gap closes or reverses.
The second mistake is not reading the specification. The sqft rate is just a number. The specification is the contract. If you do not know which tile brand is specified, which cement grade is specified, which electrical wire specification is included — you do not know what you are buying. We have seen homeowners sign contracts without reading the specification and discover at handover that their premium-sounding turnkey home was built with materials they would never have knowingly chosen.
“Always ask for the full specification — not just the per sqft rate. The rate is a number. The specification is the truth.”
PMC vs Turnkey — Honest Comparison
| Factor | PMC | Turnkey |
|---|---|---|
| Material choices | Completely flexible — you decide | Fixed in contract — changes cost extra |
| Cost transparency | Every rupee visible | Lump sum — limited visibility |
| Savings on one item | Goes back into your budget | Stays with the contractor |
| Material price risk | You see it and decide | Contractor absorbs or passes it on |
| Exclusions | Nothing hidden — full BOQ | Many items typically excluded from sqft rate |
| Flexibility mid-project | High — decisions remain yours | Low — changes are expensive |
| Best for | Quality-focused, involved homeowners, NRIs who want visibility | Busy professionals with fixed, clear requirements |
| PMC fee | 6–10% of construction cost | Built into contractor margin — not visible |
A Final Note on PMC Cost
The PMC fee — typically 6 to 10 percent of the construction cost — is the most misunderstood part of the decision. Many homeowners see it as an additional expense on top of construction. It is not. A competent PMC consultant helps you get comparative contractor quotes, typically saving 5 percent or more on contractor costs through market knowledge and negotiation. That saving alone often covers the PMC fee. Everything else — the quality supervision, the weekly reports, the material verification, the stage payment controls — is the return on that investment.
Ready to understand which model suits your project? Let's talk.
Book A Consultation→Frequently Asked Questions
What is the real difference between PMC and turnkey construction?
In turnkey construction, one contractor manages everything at a fixed per sqft rate — but that rate typically excludes sump, septic tank, compound wall, waterproofing and other items. In PMC, Mason & Mortar acts as your independent engineering representative — you hire contractors directly with full visibility on costs, and all material choices remain yours. Savings on one item go back into your budget, not the contractor's pocket.
Is turnkey construction cheaper than PMC?
Not necessarily. A turnkey quote appears lower because it typically excludes many items. When you add back sump, septic tank, compound wall, waterproofing and other exclusions, the real cost is often comparable or higher. Additionally, material price increases mid-project can result in contractors stopping work or reducing quality — as we have seen on multiple projects in Chennai. The PMC fee of 6–10% is often recovered through competitive contractor quotes and material savings.
Who should choose PMC over turnkey?
Anyone who has specific requirements for materials, finishes or design — and anyone who wants full transparency on where their money is going. PMC is especially suitable for first-time homeowners who are not familiar with construction, NRIs who want independent verification of quality, and anyone who has had a bad experience with a contractor before.
What is typically excluded from a turnkey per sqft rate in Chennai?
Most turnkey per sqft rates in Chennai exclude the septic tank, water sump, overhead tank, compound wall, gate, parapet wall, waterproofing treatment, elevation cladding, and premium finish upgrades. The rate covers only the building measured outer wall to outer wall. Each exclusion is a separate negotiation after you have already committed to the contractor.
Can I change materials mid-project in turnkey construction?
Yes — but at a cost. In turnkey, any material change triggers additional charges covering the material cost difference, laying charges, adhesive and jointing material differences, and the contractor's margin on managing the change. Under PMC, you purchase materials directly, so changes are simply a matter of choosing differently — without a markup or penalty.