Loft conversion (Black Heath, London)
The structural calculations behind this project, prepared by our engineers for building control.
Project Overview
Location
Black Heath, London
Project Type
Loft conversion
Structural Services
Detailed Calculations
Compliance
Building Regulations
Loft Conversion – Blackheath, London
This Blackheath home has been transformed with a loft conversion, adding extra living space, natural light, and functionality to the property. The homeowners wanted to maximise their unused loft area, creating a modern, well-structured extension that blends seamlessly with the existing home.
To ensure structural stability, safety, and full compliance with Building Control, PorthouseDean provided expert structural calculations, working in partnership with Alpha Building Services (South) Ltd to deliver a safe, durable, and beautifully designed loft space.
Maximising Space & Light with Smart Structural Design
This project featured:
✅ A fully reinforced loft floor – Supporting the weight of the new living space
✅ RSJ beam & steel support design – Strengthening structural openings
✅ Load-bearing wall modifications – Ensuring seamless integration with the home
✅ Maximised natural light – Skylights and dormer windows enhancing brightness
What we did
Our role included:
✔ Structural calculations for the loft conversion – Ensuring compliance with Building Control
✔ RSJ beam & steel design – Supporting new openings and load distribution
✔ Load-bearing wall assessments – Safely modifying existing structures
✔ Roof and floor reinforcement – Strengthening the loft for long-term durability
With expert structural engineering, this Blackheath home now benefits from a spacious, stylish, and highly functional loft conversion, perfect for extra bedrooms, a home office, or an additional living area.
Thinking About a Loft Conversion? Let’s Make It Happen!
At PorthouseDean, we provide expert structural calculations for loft conversions, RSJ beams, and dormer extensions.
📍 Providing structural engineering across Blackheath, Greenwich, and Greater 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.