Insights

Practical thinking on MEP cost.

Analysis, guidance and market observations from our work across MEP cost planning, procurement and cost intelligence.

Market NotesInsight Papers
Latest publication
Market NoteNo. 01 · October 2026 · 4 min read

The BCIS All-in TPI was never built to measure MEP.

The All-in TPI describes the wider tender market. We explain why MEP inflation allowances need package-specific evidence and set out three questions to ask of any Stage 2 or 3 MEP cost plan.

3.2%BCIS All-in TPI annual movement to 3Q2026
4.5%BCIS General Building Cost Index forecast annual rise
77%TPI Panel respondents reporting contractors eager to tender
Read the Market Note
THM Insight Series · Forthcoming

What good looks like in MEP cost planning.

Our first series explores how to define scope, assess cost firmness, record assumptions, explain cost movement and maintain a traceable basis for MEP costs. Each paper addresses a practical question project teams face.

Insight Paper
THM Insight 01
The cost plan is no longer in the drawings.

How scope definition has become a cost discipline and what good looks like in practice.

Forthcoming
Insight Paper
THM Insight 02
How firm is your cost plan?

Cost firmness by evidence, not stage.

Forthcoming
Insight Paper
THM Insight 03
What good looks like: an MEP assumption register.

The structure, language and level of detail that makes an assumption register useful rather than decorative.

Forthcoming
Insight Paper
THM Insight 04
What good looks like: cost plan reconciliation.

A structured approach to explaining cost movement between stages, package by package.

Forthcoming
Insight Paper
THM Insight 05
The golden thread as a cost discipline.

What the golden thread means for cost information, and how it should be recorded through a project.

Forthcoming
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