Professional
Extension Design &
Planning

Transform your home with expert architectural design, structural design & calculations, and comprehensive planning services. From concept to completion, we deliver exceptional results for residential extensions.

900+
Projects Completed
20+
Years Experience
100%
Success Rate

Our Services

Comprehensive architectural and structural solutions for residential extensions

We also offer stand‑alone drawing services for commercial buildings and detailed design.

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Architectural Design

Professional architectural drawings and 3D visualisations tailored to your specific requirements and local planning regulations.

  • Planning permission drawings
  • 3D modeling and visualisation
  • Technical specifications
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Structural Design & Calculations

Structural design and calculations for residential projects, with full building regulations compliance.

  • Structural calculations
  • Beam/RSJ sizing
  • Building regulations compliance
  • Foundation and load assessments
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Project Management

End-to-end project coordination from initial consultation through to completion, ensuring smooth execution.

  • Planning application support
  • Contractor coordination
  • Quality assurance
  • Timeline management

Portfolio

A selection of recent projects with before/after and internal photos

Single Storey Rear Extension

Before
Before
After
After
After (alternate view)
After (alternate)
Kitchen internal
Kitchen (internal)
Bathroom internal
Bathroom (internal)
2D Drawings

Annexe Extension

Before
Before
After
After
2D Drawings

New Build

Built
Built
Internals
Internals
2D Drawings

Get Started

Ready to transform your home?

Let's Discuss Your Project

Our team of designers is ready to bring your extension vision to life. Get in touch for a consultation.

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Email

info@rpprojects.co.uk

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Phone

07881827652

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Location

Hertfordshire and surrounding areas