Blog

Written for the person doing the valuation

Notes on the parts of the job that cost money when they go wrong: payment timetables, valuations, variations, retention and final accounts. No product announcements.

Construction Act

Setting up the payment schedule before the first valuation

Ten minutes with the contract particulars at the start of a job removes a category of error for its whole duration. What to extract, and what to do when the particulars are silent.

4 July 2026 · 6 min read
Construction Act

Interest on late payment: what you can actually claim

Contractual interest, statutory interest under the Late Payment of Commercial Debts Act, and the fixed compensation most claimants forget. Which applies, and why the choice is not freely yours.

26 June 2026 · 6 min read
Construction Act

Counting the days: where payment timetables quietly go wrong

Whether days are calendar or business days, whether the first day counts, and what happens when a deadline lands on a bank holiday. The small arithmetic that decides whether a notice was valid.

19 June 2026 · 6 min read
Variations

Loss and expense is not the same as an extension of time

Time and money are separate entitlements with separate tests. Why an extension of time does not carry money with it, what has to be ascertained, and where these claims usually fail.

11 June 2026 · 7 min read
Valuations

Choosing a valuation cycle, and why moving it costs more than it saves

Monthly valuations, stage payments and milestones compared. How the date interacts with your own workload, and what happens to the statutory dates when the cycle slips.

4 June 2026 · 5 min read
Construction Act

Pay-when-paid, and the other clauses the Act strikes out

Conditional payment clauses are ineffective under section 113, with one narrow exception. What survives, what does not, and what fills the gap when a clause is knocked out.

27 May 2026 · 6 min read
Variations

Pricing a variation before it is built: quotations and their traps

Agreeing the price and the time effect of a change before work starts is better for everyone. Why the mechanism is used so rarely, and what acceptance actually settles.

20 May 2026 · 6 min read
Valuations

Assessing payment under NEC4: what changes from JCT

Assessment dates instead of valuation dates, Price for Work Done to Date instead of measured work, and a payment mechanism that differs by main Option. What a JCT surveyor needs to unlearn.

12 May 2026 · 7 min read
Construction Act

Suspending performance for non-payment: the right and its price

Section 112 gives a statutory right to stop work when the notified sum is not paid. The seven day notice, what can be suspended, and the costs and time recoverable when it is done properly.

5 May 2026 · 6 min read
Practice

Where a small practice loses its fee

Rebuilding the same spreadsheet every month, reformatting certificates, and finding out what was agreed. An honest look at the hours that do not appear on any fee proposal.

27 April 2026 · 5 min read
Variations

Provisional sums: defined, undefined, and why the difference costs money

A defined provisional sum is allowed for in the contractor programme and preliminaries. An undefined one is not. Getting the classification wrong changes what happens to time and preliminaries.

20 April 2026 · 6 min read
Valuations

Spotting front-loading in a contractor application

Front-loading moves money forward without changing the contract sum. How it appears in a bill, in an activity schedule and in an application, and what a client-side surveyor can properly do about it.

12 April 2026 · 6 min read
Construction Act

Smash and grab adjudication, and the true value answer

One adjudication asks whether the notices were served. A different one asks what the work is worth. Confusing the two is how a payer ends up funding both.

5 April 2026 · 7 min read
Audit trail

Records that survive adjudication, and the ones that do not

An adjudicator decides on documents in twenty-eight days. What contemporaneous means in practice, and why a reconstructed record damages the case it was built to support.

28 March 2026 · 6 min read
Subcontractors

Contra charges and set-off: doing it so it survives

A justified deduction made without the contractual mechanism is an unjustified deduction. Notice requirements, evidence, and why netting a contra charge inside a valuation is the wrong place.

21 March 2026 · 6 min read
Final account

The final certificate and what it closes for good

On JCT contracts the final certificate has conclusive effect on certain matters unless proceedings are commenced within a short window. What it settles, and what it does not.

13 March 2026 · 6 min read
Variations

Dayworks: when they apply and how to check them

Dayworks are the last resort in the valuation hierarchy, not the convenient one. When they are properly used, what the sheets must show, and the checks that take five minutes.

6 March 2026 · 6 min read
Valuations

Materials on site and off site: certifying without overpaying

Unfixed materials are the most common source of interim overpayment. The conditions for certifying them, why off-site materials are treated differently, and what happens on insolvency.

26 February 2026 · 6 min read
Construction Act

When the payer stays silent: the payee default notice

If no payment notice is served, the payee can serve one instead, and the sum it states becomes the sum that must be paid. Why silence is the most expensive response to an application.

19 February 2026 · 6 min read
Reports

A risk register that produces a contingency you can defend

A flat percentage contingency is a guess with a decimal point. How to build a register that produces a number, keep it current, and answer the question every client eventually asks.

11 February 2026 · 6 min read
Subcontractors

Cash position: money in against money out, per job

Profit and cash are different questions and a job can be healthy on one and dangerous on the other. What to measure, how often, and the four figures that tell you where a project stands.

4 February 2026 · 6 min read
Final account

Agreeing the final account without turning it into a dispute

How to get from a submitted account to an agreed one. Sequencing the items, dealing with the three that are genuinely contentious, and why one meeting rarely does it.

27 January 2026 · 6 min read
Retention

Subcontract retention: the money nobody releases

Retention held from subcontractors outlives the packages, the surveyors and sometimes the relationship. Why release is missed downstream more often than upstream.

20 January 2026 · 5 min read
Variations

Is it actually a variation? Instructions, clarifications and change

Not every instruction is a variation and not every variation arrives as an instruction. How to tell the difference, and what to do about verbal instructions on site.

12 January 2026 · 6 min read
Valuations

From gross valuation to net payment: getting the ladder right

Gross valuation, less retention, less previous payments, less deductions. The order the deductions come off in changes the answer, and the wrong order is surprisingly hard to spot.

5 January 2026 · 6 min read
Construction Act

Pay less notices: what they must say and when to serve one

A pay less notice is the only lawful way to pay less than the notified sum. What it must contain, when it must arrive, and the four ways surveyors lose the right to serve one.

28 December 2025 · 7 min read
Reports

Cost reports and the anticipated final cost

A cost report answers what the job will cost when it finishes, not what it has cost so far. What belongs in it, how to treat risk and unagreed variations, and why the first bad report matters.

21 December 2025 · 6 min read
Subcontractors

When subcontract payment dates do not match the main contract

Two contracts, two timetables, and a main contractor in between funding the difference. How the gap arises, how large it gets, and what can be done at procurement.

13 December 2025 · 6 min read
Final account

Building a final account that actually closes

The structure of a final account, from contract sum to final balance. Which adjustments belong where, why netting destroys reconciliation, and the checks that find the missing few thousand pounds.

6 December 2025 · 7 min read
Retention

What happens to retention at practical completion

The rate halves at practical completion and the balance falls away at the end of the rectification period. Why the second release is the most commonly forgotten money in the industry.

28 November 2025 · 5 min read
Variations

Valuing variations under JCT: which rule applies

Contract rates, pro-rata, fair rates, dayworks or a lump sum quotation. The rules in order, and why recording which one you used matters more than the number itself.

21 November 2025 · 6 min read
Valuations

What belongs in an interim valuation, and what does not

Measured work, variations, materials, fluctuations, loss and expense. What is properly included at interim stage, what waits for the final account, and why the distinction protects you.

13 November 2025 · 7 min read
Construction Act

The payment timetable under the Construction Act, in plain terms

Due date, payment notice, final date for payment and pay-less notice. What each one means, how the days are counted, and what happens when you miss the one that matters.

6 November 2025 · 6 min read

Something you would like covered? Write to support@qscope.co.uk. The list of topics comes from what surveyors actually ask.

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