Insights

Field-grade notes from London renovation projects. What goes wrong, what works, and why.

PCSA

What a Pre-Construction Services Agreement Actually Does

A PCSA is the fixed-fee contract a contractor signs to price the work before the main contract. The mechanism behind two-stage tendering.

By Denis Kvasnei · 27 April 2026 · 9 minute read
PCSA

The Six Zones of a Myrmex PCSA

A PCSA isn't one document. It's six zones of priced work, each producing evidence the main contract depends on.

By Denis Kvasnei · 27 April 2026 · 7 minute read
PCSA

PCSA vs Letter of Intent: Which Instrument Belongs at Which Stage

Both authorise work before the main contract exists. They do different jobs. The right sequence on a project that needs both is PCSA first.

By Denis Kvasnei · 27 April 2026 · 6 minute read
FOUNDATION

Why Myrmex Exists

The London renovation industry sells craft and trust. It runs the project on neither. Myrmex was set up to replace that, with systems.

By Denis Kvasnei · 27 April 2026 · 3 minute read