Extension (Highgate, North London)
The structural calculations behind this project, prepared by our engineers for building control.
Project Overview
Location
Highgate, North London
Project Type
Extension
Structural Services
Detailed Calculations
Compliance
Building Regulations
Single Storey Extension – Highgate, North London
This Highgate home has been beautifully transformed with a single-storey extension, enhancing space, functionality, and natural light. The homeowners wanted to expand their living area, creating a modern, open-plan space while ensuring the structural stability and compliance with Building Control.
To achieve this, PorthouseDean provided expert structural calculations, ensuring the new extension, steel beam reinforcements, and load-bearing wall modifications were designed for long-term strength and efficiency.
Expanding Space with Smart Structural Engineering
This project included:
✅ A single-storey rear extension – Extending the ground floor for a seamless open-plan design
✅ Floor-to-ceiling glazing & bi-fold doors – Maximising natural light and garden views
✅ Structural steelwork & RSJs – Supporting large-span openings for modern aesthetics
✅ Seamless integration with the existing structure – Maintaining stability and efficiency
What we did
Our contributions included:
✔ Structural calculations for the single-storey extension – Ensuring compliance with Building Control
✔ RSJ beam & steel design – Supporting wide openings for an open-plan effect
✔ Load-bearing wall assessments – Ensuring safe structural modifications
✔ Foundation analysis – Providing stability for the extended footprint
With expert structural engineering, this Highgate home now benefits from a spacious, contemporary, and highly functional extension, offering improved flow and a seamless indoor-outdoor connection.
Planning a Home Extension? Let’s Make It Happen!
At PorthouseDean, we provide expert structural calculations for home extensions, RSJs, open-plan layouts, and wall removals.
📍 Providing structural engineering across Highgate, Hampstead, and North London.
Why Extend Your Home?
More Space, More Possibilities
Create an open-plan kitchen, a family hub, or a bright entertaining space.
A Date You Can Plan Around
You choose the delivery date, and the price follows the date.
More Natural Light
A wider opening to the garden needs a beam sized for the load above it. The calculations set that size.
Personalised Design
Every house is built differently. The calculations work from your drawings and the structure you already have.
How PorthouseDean Supports Your Project
Every project is different, but the need for precise, reliable structural calculations remains the same. Our engineers work with:
Homeowners
Ensuring designs are safe, cost-effective, and practical.
Architects
Providing calculations that allow for creative yet compliant designs.
Builders
Making sure construction runs smoothly with clear, reliable specifications.
Planning Your Own Project?
More than 9,000 projects since 2012 have run through the same process. You get a fixed price before you commit, and you choose the delivery date.
📩 Get a QuoteStructural Engineering Services We Offer
Structural Calculations for Loft Conversions
Calculations for the floor, beams and roof changes a loft conversion needs.
Structural Calculations for Wall Knock-Throughs
Beam and support calculations for taking out a wall.
Structural Calculations for Extensions & New Builds
Calculations for foundations, walls, beams and roofs on extensions and new builds.
Structural Calculations for Bi-Fold Doors & RSJs
Beam and padstone sizes for wide openings and bi-fold doors.
Structural Drawings & Building Control Calculations
Complete documentation to help you achieve smooth Building Control approvals.
