Stackline Start a project
Showreel · 2026
— LONDON · UK · EST. 2019

Building precision at every scale.

Stackline is a construction firm delivering architectural-grade residential, commercial and heritage projects across the UK. We work with the architects clients trust — and build to the standard those drawings deserve.

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— OUR DISCIPLINE

Construction held to the same standard as the drawings.

We measure twice and build once. Every project runs to a fixed schedule, a transparent ledger, and a delivery team that doesn't leave site until the architect signs off.

— BY THE NUMBERS

Numbers that hold up on site.

  • 01 0 Projects delivered

    From listed Georgian retrofits to new-build civic schemes across the UK.

  • 02 0 On-time handovers

    A fixed programme, audited weekly. Slippage is the exception, not the rule.

  • 03 0 In-house trades

    Carpenters, masons and MEP engineers on staff — not a subcontractor lottery.

  • 04 0 RIBA partners

    Long-form relationships with the practices clients ask for by name.

— WHAT WE BUILD

A studio for every brief.

Four practice areas, one delivery model. Each project led by a dedicated foreman and signed off against the architect's spec.

2026
— START A PROJECT

Bring us in early.

We do our best work when we're at the table from concept stage — quantity surveys, buildability, sequencing, the lot. Tell us about the brief.

— IN THEIR OWN WORDS

Architects who keep coming back.

  • Stackline reads our drawings the way we read them. Three projects in, the conversation has moved from coordination to craft.

    Amelia Marwell Founding Director · Studio Marwell
  • The schedule never slipped. Weekly programme reviews, transparent ledger, foreman on speed-dial. It's how building should work.

    James Pendle Practice Lead · Pendle Architectural
  • We trust them with listed work. That's not a small statement — the heritage discipline they bring to site is rare.

    Sarah Caldwell Director · Caldwell & Co. Architects