Most homeowners do not lose money on a build because the price was too high. They lose it because the document they signed was too thin to hold the builder to anything. A two-page quote with a banking detail at the bottom feels like an agreement. Legally, it is closer to a wish list.

This article sits next to the JBCC contract annotated, which walks the clauses one by one. Here the job is different: to put a proper JBCC contract and a one-page builder's quote next to each other, line by line, so you can see exactly what the quote leaves out and decide which document your build actually needs.

What the JBCC suite is

The JBCC is the Joint Building Contracts Committee, a non-profit body that represents architects, engineers, quantity surveyors, contractors and specialist trades. It publishes the standard family of building contracts used across South African construction. Because it is drawn up by all sides of the industry rather than by the builder's lawyer, it is balanced, and the courts treat departures from it with some suspicion.

For a home build, two agreements in the suite matter:

  • The JBCC Principal Building Agreement (PBA), currently Edition 6.2 (May 2018). This is the full contract: principal agent, payment certificates, retention, guarantees, adjudication, the lot. It is the right instrument for a new house or a substantial addition.
  • The JBCC Minor Works Agreement (MWA). A shorter contract in the same family, built for smaller, lower-risk jobs where appointing a full principal agent would be overkill. It keeps the JBCC logic (staged payment, defects liability, a real dispute clause) but with lighter machinery.

The key point is that the MWA is still a JBCC contract. It is not a "one-page quote". A quote sits outside the suite entirely.

Why a quote is not a contract

A quote tells you a price. A contract tells you what you get for the price, when you pay it, what happens when something goes wrong, and how you part ways if you must. Those last three are where every dispute we review actually lives.

A one-page quote is silent on almost all of it. There is usually a lump sum, maybe a rough list of inclusions, a deposit figure and a bank account. There is rarely a programme, almost never a retention provision, no defects period, no guarantee, no variations mechanism and no dispute clause. None of that absence is accidental. The gaps are exactly the protections the homeowner would otherwise have.

Our red-flag checklist is blunt on this point. On the documents the builder must produce, it says a JBCC- or comparable written contract, with annexures is non-negotiable, and that "a one-page 'quote' is not a contract. Walk away." On the bill of quantities it warns that "a lump-sum quote hides the variations the builder will charge you for later."

The side-by-side

Here is the same build viewed through both documents.

What matters JBCC contract (PBA / MWA) One-page quote
Scope and pricing A bill of quantities (BOQ): itemised quantities and rates. Every item priced and measurable. A single lump sum. No breakdown, so no way to check a price or value a change.
Specifications A specifications schedule annexed: finishes, taps, tiles, and PC and provisional sums for items not yet chosen. "Standard finishes." If it is not written down, the upgrade is on your account.
Payment Staged payments certified against work done, on the JBCC stage schedule below. Deposit plus "progress payments" on the builder's say-so, often front-loaded.
Retention A percentage (typically 5%) held on each certificate as security against defects. Usually none. Once paid, your leverage is gone.
Defects liability A formal 90-day defects period after practical completion; the builder must return and fix. No defined period. "Call me if something breaks."
Performance guarantee A bank or insurance construction guarantee (commonly 5% to 10% of contract value). None. Your only security is the builder's goodwill.
Insurance Contractor's all-risk and public liability obligations are written in. Silent. Site incidents become your problem.
Variations Priced off BOQ rates, instructed in writing by the principal agent before the work is done. Verbal "extras", priced after the fact, disputed at the end.
Delay A programme of works plus penalty per calendar day of late completion. No completion date you can enforce, and no damages if it slips.
Dispute resolution A staged clause: negotiation, then adjudication, then arbitration. Nothing. Your only route is the High Court.
Termination Defined grounds and a notice procedure for ending the contract for cause. No clean exit. Walking away is itself a breach.

Read that table top to bottom and the pattern is clear. The quote is not a smaller version of the contract. It is the price line of the contract with every protection stripped out.

The clauses, in plain terms

Scope: bill of quantities vs lump sum

A bill of quantities lists every element of the build with a measured quantity and a rate. It does two things a lump sum cannot. It lets you compare quotes like for like, and it gives you agreed rates to price changes against later. Under the JBCC, variations are valued using BOQ rates first. With no BOQ, there are no rates, so every change becomes a negotiation you will usually lose. Insist on the BOQ.

Specifications and PC and provisional sums

The specifications schedule pins down what "finished" means: which tiles, which taps, which paint system. For items you have not chosen yet, the JBCC uses PC sums (prime cost, a budget allowance for a supplied item) and provisional sums (an allowance for work not yet fully designed). These are honest placeholders, adjusted against actual cost on real evidence. A quote's vague "allowance" is the opposite: an open door for the builder to choose up and bill you the difference.

The stage-payment schedule

This is where a JBCC-aligned contract protects your cash most directly. Payment is released stage by stage, against work actually inspected, on a fixed schedule. Use the payment schedule tool to model it for your own contract value. The JBCC-aligned stages and their percentages are:

  1. Mobilisation - 10%. Released only against a signed agreement, NHBRC enrolment certificate, site handover and the performance guarantee lodged.
  2. Foundations and ground floor slab - 15%. Engineer signs off before backfill.
  3. Brickwork to wall plate - 20%. All walls to roof level, lintels in.
  4. Roof structure and cover - 15%. Trusses certified, roof waterproofed.
  5. Plastering, screeds and first fix - 12%. First-fix plumbing and electrical inspected.
  6. Joinery, tiling and second fix - 13%. Snag walk-through at this stage.
  7. Finishes and paint - 8%. Match finishes against the schedule line by line.
  8. Practical completion - 5%. Snag list closed, occupation certificate issued, keys handed over.
  9. Final completion (90 days) - 2%. All defects resolved, as-builts handed over, NHBRC certificate filed.

Those percentages total 100%. A one-page quote rarely ties payment to inspected work at all, which is how homeowners end up having paid 60% for a build that is 40% done. For the deposit and payment logic in more depth, see builder deposits and stage payments.

Retention and the 90-day defects period

Retention is a slice (typically 5%) the JBCC holds back on each payment certificate. Half is released at practical completion; the rest only after the 90-day defects period, once the builder has returned to fix anything that has shown up. That held-back money is the single strongest reason a builder comes back. A quote with no retention and no defects period gives you neither the money nor the leverage.

Performance guarantee

The JBCC offers a construction guarantee, usually a bank or insurance instrument worth 5% to 10% of the contract value, that pays out if the builder fails. Demand a guarantee, not a personal cheque or a cash float. A quote offers nothing here at all.

Insurance obligations

A JBCC contract makes the contractor carry contractor's all-risk (CAR) cover and public liability cover, and to hold a current Letter of Good Standing for workmen's compensation. A quote is silent, which means an uninsured site incident, an injured worker, or storm damage mid-build, lands on you as the property owner.

Variations: how changes are priced and instructed

Under the JBCC, a change is a formal variation: instructed in writing by the principal agent, priced off the BOQ before the work happens, with time and cost implications attached. That sequence is what stops the "you asked for that, now pay for it" argument at the end of the job. A quote handles changes by memory and goodwill, which is to say it does not handle them.

Delay damages and the programme of works

The JBCC contract data sets a penalty per calendar day of delay, and it attaches a programme of works (a Gantt) so there is a baseline to measure lateness against. No programme means no way to prove the builder is late, which means no claim. The red-flag checklist flags exactly this: "No programme = no way to claim damages for delay." A quote with a hopeful "about four months" gives you nothing to enforce.

Dispute resolution and adjudication

The JBCC dispute clause is staged. You negotiate first; if that fails you go to adjudication, a fast, relatively cheap process where an independent adjudicator gives a binding interim decision; and only then to arbitration. A one-page quote has no dispute mechanism, so your only route is litigation in the High Court, which is slow and expensive enough that most homeowners simply absorb the loss.

Termination

The JBCC sets out when and how you may end the contract for cause (sustained suspension of works, failure to progress, insolvency, material breach) and the notice you must give. That procedure protects you: terminate improperly and you can be liable for damages. A quote has no exit at all, so ending a bad relationship becomes a breach in itself.

The documents to insist on before you sign

Drawing straight from the red-flag checklist, four documents are non-negotiable for a home build:

  • Approved municipal plans on site, not merely submitted. Building without approved plans is a contravention and carries a demolition risk.
  • A JBCC- or comparable written contract, with its annexures attached and complete.
  • A detailed bill of quantities, not a lump sum.
  • A specifications schedule covering finishes, taps, tiles and PC items.

If any one of these is missing, you are not yet looking at a contract you can rely on.

When a shorter agreement is reasonable, and when JBCC is non-negotiable

Not every job needs the full Principal Building Agreement. A proportionate document is part of doing this properly.

A shorter agreement, the JBCC Minor Works Agreement or a comparable written contract, is reasonable for small, well-defined, lower-value work: a single-room renovation, a boundary wall, a bathroom refit, a carport. The risk is contained, the scope is short, and a full principal agent would add cost without adding protection. The test is not the document's length but whether it still carries the essentials: staged payment against work done, a defects period, a written variations rule and a real dispute clause.

The full JBCC PBA is non-negotiable for a new house, a major addition, anything that needs NHBRC enrolment, any structural work signed by an engineer, or any contract where the sum is large enough that a mid-build dispute would hurt. As a rough line, once you are into six figures and a multi-stage build, use the PBA. And whatever the size, if a builder resists a written staged-payment contract, that resistance is itself the finding. Resistance to accountability is the thing you are screening for.

A pre-signing checklist

Before you sign anything, confirm:

  • The agreement is a JBCC PBA or MWA, or comparable, with all annexures attached, not a quote.
  • A bill of quantities is annexed, itemised and priced.
  • A specifications schedule lists finishes, with PC and provisional sums where choices are still open.
  • The payment schedule follows the JBCC stages and percentages above, certified against inspected work.
  • Retention (around 5%) and the 90-day defects period are written in.
  • A construction guarantee of 5% to 10% is required of the builder.
  • CAR insurance, public liability and a current Letter of Good Standing are in place.
  • Variations must be instructed in writing and priced off the BOQ before work proceeds.
  • A programme of works is attached and a daily delay penalty is set in the contract data.
  • The dispute and termination clauses are present and you understand them.
  • Approved plans and the NHBRC enrolment certificate are on site before the first payment.

Then have a construction lawyer red-line your filled-in contract data before you sign. An hour at this stage is the cheapest protection on the whole project.

For the wider picture of appointing the right builder under the right contract, read how to hire a turnkey builder. The contract you sign is the part of the build you can still control at the very moment you have the most leverage and the least information. Spend it on a real one.