House Extensions & Loft Conversions
Structural calculations, steel beam design, planning drawings and Building Regulations support for house extensions and loft conversions across Greater London, Hertfordshire and Buckinghamshire, with construction available through our trusted team. One point of contact from first sketch to finished build.
What We Do
Structural design, drawings and construction for house extensions and loft conversions, all handled by one team.
.jpg)
Structural Design
●
●
●
●
●
●
●
●
●
●
●
Structural Calculations
Steel Beam Design
Load-Bearing Wall Removal
Chimney Breast Removal
Loft Floor Joist Design
Roof Alterations
Foundation Design
Structural Surveys
Site Inspections
Party Wall Surveying
Building Control Support
Planning & Design
●
●
●
Planning Applications
Architectural Drawings
Building Regulations Drawings
.jpg)
Extension & Loft Builds
●
●
●
●
●
●
Rear & Side Extensions
Wrap-Around Extensions
Dormer Loft Conversions
Hip-to-Gable Lofts
Mansard Lofts
Velux Loft Conversions
Your Questions Answered
Common questions about house extensions and loft conversions.
Do I need an engineer?
Usually, yes. Building Control asks for calculations whenever walls are removed, beams are added or new floors and roofs are built.
Planning permission?
Many projects fall under permitted development, but not all. We'll advise on your property and prepare the drawings if they're needed.
How much does it cost?
Every project is different, so we give you a free, no-obligation quote based on your plans.
How quickly can you help?
We work efficiently to deliver your calculations and drawings within your timeline, without compromising on accuracy.
What do you need from me?
A brief description of the work, the full property address and, if possible, any photos or plans.
Can you build it too?
Yes. Our construction team can carry out the work, so you have one point of contact from start to finish.
What Our Clients Say
“It was a pleasure working with you on our conversion and extension works in Enfield. You managed the structural design and calculations on time, and all our requirements were handled and responded to promptly. I look forward to working with you again.”
Huseyin C. · Architect
“It is a comfort to have such a professional, trustworthy and reliable business contact in my construction work.”
Kanat A. · Rickmansworth
“I have worked with Raisehold Limited over the past six months on an extension project. Their construction manager, Teoman Livaneli, is proactive in implementing and controlling construction work.”
Lee C. · Ruislip
“We have worked with Raisehold Limited and Teoman Livaneli on various construction projects. His solutions to structural issues made our work safe and cost-effective.”
Bugra · Pinner
“If I were looking for a structural engineer for another project, I would definitely choose to work with Teoman again.”
Maria R. · St Albans
MEMBERS & PARTNERS
Ready to start your project?
Call or email us with a brief description of your project and we'll send you a free, no-obligation quote.