The construction contract
Scope, specs, milestones, penalties, retention and a fair way to settle disputes — the document that protects you when goodwill runs out.
The handshake held for nine months. Then the slab cracked, and there was nothing in writing.
Most house contracts in India are agreed over tea and trust, and most of the time the trust holds. But a contract isn't for the good months — it's for the day the slab cracks, the schedule slips six weeks, or the contractor asks for the next payment before the last stage is finished. A clear agreement doesn't signal mistrust. It's the thing that lets two people who do trust each other keep working when something goes wrong — because the answer was written down before anyone was angry.
Seven clauses decide who's protected: scope to disputes
Scope, specifications and a price basis leave nothing to memory
A contract's first job is to make 'build my house' precise enough that no one can reinterpret it later. Three clauses do that.
- Scope of work — exactly what the contractor is and isn't responsible for. Boundary wall? Overhead tank? Approvals? Name it, or you'll argue about it. - Specifications & material schedule — the BOQ from the last lesson, attached and signed: brands, grades, makes. 'Good quality tile' is a future dispute; 'vitrified tile, [brand], 600×600, ₹X/sq ft grade' is a contract. - Contract price & basis — the total, and whether it's lumpsum, item-rate, or cost-plus — plus whether GST is included or extra (it applies to construction services), and whether rates are fixed or escalate with material prices.
Get these three right and most disputes never start, because there's a written, signed answer to 'but you said'.
Vague words are expensive. Every 'good quality' you leave in the contract is a negotiation you've deferred to your angriest day.
Milestones, penalties, retention, variations and a dispute path
The other half of the contract links payment to progress and protects you when things slip.
- Payment milestones — release money against completed stages (e.g. ~10% on plinth, on each slab, on brickwork, on plastering, on finishing, with a final tranche on handover), never on a calendar. Never pay ahead of work done — it's your main leverage. - Penalty / liquidated damages (LD) — a pre-agreed sum per week of delay (commonly 0.5–1% of contract value per week, capped at ~5–10%). It compensates you without having to prove loss. - Retention — hold back ~5% of each payment, released after a defects-liability period (typically 6–12 months) so cracks and leaks that show up later get fixed for free. - Variations — every change priced and signed before work, against the BOQ rates, so 'extras' can't ambush you. - Dispute resolution — name the path (negotiation, then mediation or arbitration) and the governing jurisdiction, so a disagreement doesn't mean a stalled site.
These five clauses are what turn a friendly arrangement into one that's actually enforceable.
Refuse to start work on a verbal understanding, however warm — put it in writing while everyone's still happy. Insist on three things above all: the signed BOQ as the specification, **stage-linked payments** so you never pay ahead of work, and a **retention of ~5%** released only after a 6–12 month defects period. Add a delay penalty and a written-variation rule and you've covered the disputes that actually happen. Have a professional or lawyer read it before you sign.
Use a proper form of contract rather than a one-page letter — adapt a standard residential agreement so scope, specification, payment schedule, LD, retention, defects-liability and variation procedure are all explicit. Define the variation valuation method up front (BOQ rates, then quotation for non-BOQ items) to keep the change trail clean. Clarify who certifies each milestone for payment; an independent certifier protects both client and contractor and pre-empts most payment disputes.
The contract is the architecture of risk. Each clause allocates a specific risk — price (lumpsum vs measurement), time (LD and extension-of-time), quality (retention and defects liability), and change (variations) — between owner and contractor. Study a standard form and you'll see how payment certification, retention and dispute mechanisms interlock to keep a project moving. The same logic scales from a single house to public infrastructure.
“We trust each other and we've shaken hands, so a written contract isn't really necessary.”
A contract isn't a substitute for trust — it's what protects it. The friendliest arrangement falls apart the day there's an honest disagreement about scope, a delay, or a payment, because memory and goodwill can't settle what was never written down. The contract simply records what you both already agreed, for the day you need it. Skipping it is the most common, costliest informality in Indian home building.
Pressure-test any contract before you sign it:
- 01Check the specification is the signed BOQ with named brands and grades — not prose like 'standard finishes'. If a material isn't pinned down, it's a future dispute.
- 02Confirm payments are tied to completed construction stages, that you never pay ahead of work done, and that ~5% retention is held until a 6–12 month defects-liability period ends.
- 03Make sure three clauses exist: a delay penalty (liquidated damages, e.g. ~0.5–1%/week capped), a written-and-priced variation procedure, and a named dispute-resolution path. Then have a professional or lawyer review the whole document.
A construction contract isn't paperwork you do because you're suspicious — it's the calm answer you prepare for the day something goes wrong. Scope and specs stop the arguments; milestones, penalties, retention, variations and a dispute path settle them fairly when they come. Sign it before the first brick, and the goodwill you started with survives the whole build.
A fair contract pins down scope, specifications (the signed BOQ) and the price basis, then links money to stage milestones (never pay ahead), adds a delay penalty (~0.5–1%/week, capped), ~5% retention released after a 6–12 month defects period, a written variation rule, and a dispute path. Have it reviewed before signing.
What should a house construction contract include in India?
At minimum: a clear scope of work, signed specifications and material schedule (the BOQ), the contract price and basis (lumpsum/item-rate, GST inclusive or extra), stage-linked payment milestones, a delay penalty (liquidated damages) clause, retention money with a defects-liability period, a written variation procedure, and a dispute-resolution path. Have a professional or lawyer review it before signing.
What is retention money in a construction contract?
Retention is a portion of each payment — commonly around 5% — that the owner holds back rather than paying in full. It's released after a defects-liability period (typically 6–12 months) once any cracks, leaks or snags that appear post-completion have been rectified. It gives the contractor an incentive to fix latent defects at no extra cost.
What is a liquidated damages clause for construction delay?
It's a pre-agreed penalty the contractor pays for each period of delay beyond the completion date — often 0.5–1% of the contract value per week, capped at around 5–10% overall. Because the amount is fixed in advance, you're compensated for delay without having to prove your actual loss in court, which makes it far easier to enforce.
With your team chosen, your price fixed and your contract signed, the planning is finally done. Module 6 leaves the paperwork behind and walks onto the site — construction, stage by careful stage.