House Construction Payment Schedule in Nepal: Advance, Milestones, and Retention

A good schedule has three moving parts: a small mobilization advance to get started, milestone payments released as each verified stage completes, and a retention amount withheld from every bill and released only after the work has stood up for a defect-liability period. Build all three for your contract amount with the House Construction Payment Schedule Calculator.

The logic behind the structure is leverage and fairness in balance. At every point in the project, the value of completed work should slightly exceed the money paid out — enough that walking away always costs the contractor more than finishing, but not so lopsided that the contractor is financing your house. Schedules that drift from this balance in either direction produce the two classic failures: the abandoned site, and the contractor who quietly cuts quality to recover cash.

The schedule should be derived from a real cost breakdown, not round numbers. Price the stages from your phase budget and the BOQ — see BOQ vs estimate — so each milestone payment approximates the value of the work it pays for.

A mobilization advance lets the contractor buy initial materials and set up the site — 10–20% of the contract is typical. A large advance removes your leverage and increases your loss if work stalls, which is especially dangerous when you are managing the build from abroad. If a quote demands a big advance, treat it as a red flag and run it through the Contractor Quote Checker alongside the other checks in our quote review guide.

A contractor who genuinely cannot mobilize on a modest advance is telling you about their financial position — and you are about to become their working capital. Better answers exist for legitimate cash needs: you can buy the first materials directly in your own name, or structure an early small milestone (site setup and excavation complete) that converts advance risk into verified-work payment within weeks.

Each milestone should map to a stage you can verify — foundation and DPC, superstructure, masonry, plastering, services, flooring, finishing, handover. Release the next payment only after photos, video, and independent measurement confirm the last stage. Set the milestone amounts from a real phase budget, and record everything in a written contract you can generate with the Document Generator.

A milestone is only as strong as its verification. Define each stage's completion in observable terms in the contract, and check it against the drawings and BOQ before paying — measured quantities, not impressions. For owners on site, this is a walk-through with the engineer; for owners abroad, it is the stage-report bundle described in managing construction remotely: dated photos, walkthrough video, measurements, and bills, reviewed before the transfer moves.

Keep the verification independent of the person being paid. The contractor certifying their own milestone and receiving the money is the precise arrangement that fraud-protection controls exist to prevent. An independent engineer's sign-off on each stage costs little and converts every payment from an act of trust into an act of record.

Handle partial completion firmly but fairly: if a stage is 90 percent done, pay for the verified 90 percent and document the balance — do not round up to keep the peace, because unearned payments compound silently across stages.

Retention — often 5% of each bill — gives the contractor a strong incentive to fix snags and finish properly. It is released after the building has been occupied for the agreed defect-liability period with no problems. Withhold it from every bill rather than only the last one, so the incentive accumulates across the whole project instead of arriving too late to matter.

At handover, walk the building against a snag list — doors, fittings, leaks, cracks, finishes — and agree the list in writing with completion dates. The defect-liability period (commonly six months to a year) then covers what only time reveals: monsoon leaks, settlement cracks, and fitting failures. Releasing retention early as a goodwill gesture is a gesture you cannot take back; releasing it on schedule after a clean period is exactly what the contract promised both sides.

If you are sending money from abroad, align each release with a remittance and check the true transfer cost with the Remittance Cost Calculator. Nepal's consumer and contract protections apply if a dispute arises, so keep every receipt and record — the dispute email writer helps structure the first formal letter if it ever comes to that.

For a contract of any size, the shape looks like this: a 15% mobilization advance; milestone releases of roughly 15% at foundation and DPC, 25% across the superstructure slabs, 15% at masonry and plaster, 10% at services rough-in, and 15% through finishing; and a final 5% at handover — with 5% retention deducted from every bill along the way and returned after the defect-liability period. The payment schedule calculator generates this table for your actual contract amount and lets you adjust the weights to your project.

Adapt the shape, keep the principles: small advance, payments tracking verified value, retention to the end. A schedule with those three properties survives contractor changes, price arguments, and even disputes — because at every moment, the money and the building agree with each other.

A payment schedule meets reality within weeks: a variation changes a stage's value, a material price spike squeezes the contractor, a slow decision on your side delays a milestone through no fault of theirs. Handle each within the structure rather than around it. Variations adjust the affected milestone's amount in writing, so the schedule keeps matching the work's value. Genuine input-cost shocks are worth discussing openly on evidence — a contractor forced underwater on a fixed price recovers the loss somewhere less visible, and a documented, shared adjustment is cheaper than discovering where.

Delays you cause deserve symmetrical fairness: if a milestone is complete and verified, pay it on time even if the next stage waits on your tile selection. Prompt payment against verified work is not softness — it is what earns you the standing to hold the line firmly when work is not verified. Contractors triage their sites by which owners pay predictably, and your place in that triage shows up in whose crew arrives on Monday morning.

Keep one page current for the whole project: milestones, amounts, verification dates, payments made, retention held. Shared with the contractor and updated at every release, it converts the most dispute-prone aspect of construction into a table both sides can read. Most payment fights are not about money; they are about two different memories of the same agreement — and a living, shared schedule leaves nothing for memories to disagree over.