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Construction Cost

Build Architecture Award – Winner of the
"2025 Design and Build Award"

STAAC Design and Build: What We Offer


Your trusted team of expert builders and project managers, specializing in architectural design, structural engineering, and energy-efficient homes.

At STAAC, we merge innovative design with robust structural engineering to create homes that are beautiful, functional, and sustainable. Our commitment to energy efficiency and passive House principles ensures your home consumes less energy, reduces its carbon footprint, and maximizes comfort.

We design eco-friendly homes using advanced insulation, airtight construction, and renewable energy, whether for new builds or renovations. Our sustainable designs prioritize both aesthetics and practicality.

Common Project Types

Ballpark Figures for Your Home Extension

These are the starting prices for the most common extension types:

Construction Costs

At STAAC, the cost of £2,300 per square meter plus VAT for design and build typically includes all expenses related to construction and design. This rate generally covers the following:

  1. Architectural Design – Fees for creating building plans, including any interior design work.
  2. Engineering Costs – Structural, mechanical, electrical, and plumbing services to ensure safety and compliance.
  3. Construction Costs – All expenses for materials, labor, and associated construction work.
  4. Project Management – Coordination fees to ensure the project stays on time and within budget.
  5. Permits and Approvals – Costs for obtaining permits and adhering to regulations.
  6. Contingencies – A buffer for unforeseen expenses during construction.

Example Calculation

For a property with a total area of 150 square meters:

Total Cost = 150 sqm × £2,300/sqm = £345,000

This is a rough estimate, and actual costs may vary based on location, design complexity, and material choices.

Note: Finishing and fit-out are not included in this cost.

With multiple Infrastructure and Architecture awards, including the Build Architecture Awards 2020 and 2019 for "Best Architectural Planning & Structural Engineering Company " as well as instructor awards in 2019 and 2018, STAAC has built a reputation for excellence.