Reconciling the Final Bill: Measurements, Extras and Deductions

The final bill is where a construction project either closes on good terms or turns into a long argument. Owners who hired contractors in Mysuru on a rate per square foot often assume the last invoice is a formality: area multiplied by rate, minus what has already been paid. In practice the closing statement carries three moving parts that each need checking. The measured area, the extras added during the build, and the deductions for anything changed, omitted or downgraded.

None of this needs an engineer’s training, only the right documents and an afternoon. If you are still comparing builders, our guides on working with contractors in Mysuru cover the earlier stages of the relationship.

Start with the documents, not the invoice

Before you look at a single figure, gather the paperwork the bill should be built from.

• The signed agreement, including the payment schedule and any clause on how area is measured.
• The working drawings at the revision that was actually built, not the first draft.
• The written specification listing brands, grades and finishes for each item.
• Change records: every written variation, WhatsApp confirmation or email where you approved something different.
• Payment receipts for every stage, with dates and bank references.

Line these up against the bill and mark any entry that has no matching document, or any document with no matching entry.

Checking the measurements

On a rate per square foot contract, area is the single largest number in the calculation, so a small difference matters. The first question is what “area” means in your agreement. Built-up area, super built-up area and carpet area are measured differently, and balconies, sit-outs, headroom, staircase cabins and open terraces are often counted at a partial rate or not at all. Your contract should say which convention applies. If it does not, raise it now rather than accepting the builder’s default.

Then remeasure. Take the outer dimensions of each floor from the drawings and verify them on site with a tape at a few points. Check:

1. External dimensions per floor, including whether wall thickness is counted.
2. Projections and cantilevers, and the rate applied to them.
3. Staircase and headroom, and whether they are counted once or on every floor.
4. Parapet walls, sunshades and compound walls, which are usually items outside the main area rate and should be priced as the contract says.
5. Any area added during construction, such as an extended balcony, which should match a written change.

A few square feet is normal site tolerance. A difference the size of a room deserves a joint measurement with the site engineer, using the builder’s own measurement sheet.

Verifying extras

Extras are anything outside the base scope that you asked for or that the site demanded. They are legitimate. A good contractor still has to show where each one came from.

Owner-requested upgrades. A different flooring, an extra bathroom fitting, a larger window, a false ceiling not in the specification. Each should have a written approval with a price or rate attached before the work was done. If you approved the change but no price was agreed, expect a discussion, and settle it on the basis of the difference in material and labour rather than the full cost of the new item.

Site condition items. Rock excavation, additional foundation depth and imported filling earth depend on the plot and cannot always be priced at signing. At Uniq Builders these are quoted separately after the free site visit so they are named in writing before work begins. Whoever built for you, check the quantity billed against site records, photographs or the engineer’s log.

Quantity overruns. If an item was priced per unit, such as running feet of compound wall or number of electrical points, count the units yourself.

Watch for extras that are really corrections. Redoing work that failed inspection, or replacing damaged material, is the contractor’s cost and should not appear as an addition.

Claiming deductions

Owners are usually alert to extras and forget deductions. Something in the specification usually changes along the way, and the credit rarely appears unless you ask.

• Omitted items: a fitting you chose to buy yourself, a wardrobe you dropped, a paint coat not applied.
• Substitutions: a brand or grade swapped for a cheaper equivalent, even with your consent, should carry a credit for the difference.
• Owner-supplied material: if you bought tiles or sanitaryware directly, the allowance for that item in the contract should come off the bill.
• Incomplete work at handover: snag items that remain open can be held back as a retention until they are fixed.

Walk the building room by room with the specification in hand and tick each line.

Closing the account cleanly

Once measurements, extras and deductions are settled, the arithmetic is simple: contract value on the agreed area, plus approved extras, minus deductions, minus stage payments already made. Put the reconciled statement in writing and have both parties sign it.

Before the final release, confirm that handover items are in order. On our residential construction projects, packages include plan sanction, khata and licence work, and power, water and sewage connections handled by the company, with statutory fees paid directly by the client. Make sure the documents for whatever your builder handled are in your hands. Confirm the start date of the workmanship warranty and any free service period in writing too; with Uniq Builders that is one year of free service after handover.

If GST or other taxes appear on the bill, check how they were applied with a chartered accountant rather than guessing. Current rates and treatment change, and the correct figure depends on how your contract is structured.

A written specification from the start makes all of this far easier, which is why every one of our construction packages is built against one. If you want a second pair of eyes on a bill or a fresh estimate, you can book a free site visit and consultation.

Frequently asked questions

Should the final bill be based on drawing area or measured area?

Your contract decides this, so read the measurement clause first. Where it is silent, a joint site measurement checked against the approved drawings is the fairest basis. Agree the method in writing before you compare totals.

Can a contractor charge for extras I never approved in writing?

A contractor may argue that verbal instructions count, and sometimes they do. Without a written record, however, you are entitled to ask for evidence and to negotiate the price on actual material and labour. For anything with a legal dispute attached, speak to an advocate.

How much should I hold back until snags are fixed?

There is no fixed figure; it should be proportionate to the value of the open work. Agree the retention amount and the deadline for fixes in the signed reconciliation. Release it once the items are inspected and closed.