Insights

Planning & building knowledge, from the people who draw it.

Practical guides to planning permission, building regulations, loft conversions and house extensions in London -- written by MCIAT chartered architectural technologists.

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Planning Permission in London: Complete 2026 Guide

Everything you need to know about planning permission in London -- when you need it, what it costs, how long it takes, and how to get it right first time across all 33 boroughs.

April 2026 Read article

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Building Regulations in London: What Homeowners Need to Know

Part B fire safety, Part L energy, Part M access, structural calcs -- which building regs apply to your project and how to get compliant drawings approved.

April 2026 Read article

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Architect vs Architectural Technologist: What's the Difference?

RIBA architects vs CIAT chartered technologists -- qualifications, costs, scope of work. Which professional is right for your London residential project?

April 2026 Read article

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Planning Permission vs Permitted Development: London Guide

When you need full planning permission and when Permitted Development rights let you build without it. Class A-E limits, Prior Approval, Lawful Development Certificates.

April 2026 Read article

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How Much Do Planning Drawings Cost in London? (2026 Guide)

Complete cost breakdown for planning drawings in London -- by project type, what's included in the fee, DIY vs professional, and how to save money.

April 2026 Read article

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House Extension Cost Guide London 2026

How much does a house extension cost in London? Build costs per sqm, drawing fees, hidden costs like Party Wall agreements, and borough-by-borough variations.

April 2026 Read article

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Loft Conversion vs Mansard: Which Is Right for Your London Home?

Standard dormer vs mansard -- planning requirements, build costs, space gained, property value added, and which London boroughs favour each type.

April 2026 Read article

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Drawing Service vs Architect vs Technologist: What's the Difference?

Three-way comparison -- online drawing services, RIBA architects, and CIAT technologists. Costs, qualifications, scope, and when to use each for your London project.

April 2026 Read article

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