Cellect.

Cost · Programme · Site · One record

Know the out-turnbefore the valuation does.

Cellect prices every instruction the day it is issued and holds the answer against a datum that cannot move.

One scheme, read three ways — the ledger beside this, the plot below it, and the stamp that certifies it. Move a single instruction and all three move with it.

Variance ledger

Sherbourne Wharf^†

Within tolerance

Baseline datum

Locked · week 0

£48,200,000

Façade re-spec

Instruction 041 · week 11

+£310,000

Package C buy-out

Groundworks let · week 17

−£502,000

Ground conditions, plot B

Instruction 052 · week 23

+£186,000

M&E provisional sum

Released below allowance · week 28

−£141,000

Preliminaries, three week extension

Notice 07 · week 33

+£95,000

Movement since datum

−£52,000

Forecast out-turn

As at week 36

£48,148,000

FIG. 01Forecast out-turn against datumOut-turn v datumW0–W36

One instruction, six weeks outside tolerance.

£48.6m£48.4m£48.2m£48.0m

+£60,0006 weeks out

W0W12W24W36

Reading the plot

The band is the £250,000 either side of the datum that this scheme is allowed to move within. The forecast left it once, in week 11, when the façade re-spec was instructed. It sat £60,000 outside for 6 weeks until Package C buy-out returned £502,000 against its allowance.

Forecast out-turn

Datum £48,200,000

Tolerance ±£250,000

Outside tolerance

Instruction priced in

As at week 36

Schedule 02 · The register

Every discipline reads from the same page.

RefDisciplinePosts to the recordReads back

Cost

Posts — Valuations, instructions, contra charges, buy-out returns.

Reads back — Forecast out-turn and the movement against the datum, by week.

Programme

Posts — Baseline and revised dates, delay notices, extension claims.

Reads back — Preliminaries exposure priced per week of slip.

Procurement

Posts — Tender returns, letting values, package scope splits.

Reads back — Gain or loss against the allowance the package was let from.

Site

Posts — Progress measures, site instructions, photographic evidence.

Reads back — Where the ground disagrees with the record, and who signed it.

Section 1 · Method statement · Rev C

How the record is kept.

1.1

The datum is fixed before the first valuation. One baseline for cost, programme and scope is locked and dated. Everything issued after it is measured against that line, and nothing amends it in retrospect.

1.2

Instructions are priced on the day they are issued. Each instruction enters the record against the package allowance it draws from, and is tested against tolerance before the next valuation is agreed, not after it.

1.3

The record is held, never rebuilt. Owner, approval and evidence stay bound to the figure they moved, so the out-turn on any past week can be reproduced for audit exactly as it was read then.

Start here

Bring your next scheme onto a fixed datum.

Fifteen minutes on your own cost plan. We load the baseline, price the instructions you have already issued, and show you where the out-turn actually sits.

Book a demo

Issued for
information

Job: 24-118
Sheet: P9 · Rev C
Scheme: Sherbourne Wharf^†
Issued: 2026-09-03

Out-turn, W36£48,148,000

Checked · QS · Tolerance ±£250,000