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Home Extension Hampstead & Loft Conversion Experts

Home extension projects in Hampstead are one of the most effective ways to add space and value to your property. Whether you’re planning a full rear extension or a loft conversion in Hampstead, our team at Structural Engineer Calcs provides accurate, Building Control-ready structural calculations designed around your home. From removing load-bearing walls to preparing full steel beam designs, we make sure every detail is safe, compliant, and ready for approval. Homeowners across Hampstead and Greater London trust us to deliver clear, reliable designs that turn renovation plans into reality.

home extension Hampstead

Project Overview

Location

Hampstead, Greater London

Project Type

Rear Home Extension and Loft Conversion

Structural Services

Full Detailed Structural Calculations

Compliance

Building Control Approved

Hampstead

Rear Extension & Loft Conversion in Hampstead

A beautifully designed home transformation in Hampstead, combining a rear extension with a loft conversion. The goal was to create more living space, bring in more daylight, and ensure every structural detail met Building Control requirements.

Our Structural Role

  • RSJ and steel design for wide-span openings in the new rear extension
  • Load-bearing wall checks, trimmers and lintels for internal openings
  • Loft structure designed with ridge beam, purlins and dormer supports
  • Foundation verification and clear load paths to ensure stability
  • Full structural calculations and drawings for Building Control approval

Maximising Space & Light

  • Open-plan kitchen and living area with clean, wide steel spans
  • Loft conversion adds a spacious bedroom and study area without moving house
  • Large glazing and roof lights designed for bright, open interiors
  • Efficient use of space to preserve the garden and improve flow through the home

Results for the Family

  • Expanded family living area perfect for daily life and entertaining
  • New loft bedroom adds value and flexibility for future needs
  • Brighter, more open layout across both floors for modern living

Planning Something Similar?

Structural Engineer Calcs provides precise structural calculations for home extensions, RSJs, and loft conversions across Hampstead and wider Greater London. Building Control-ready, fixed fee, fast turnaround.

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Serving Hampstead and surrounding areas across Greater London.

Why Extend or Convert Your Loft in Hampstead?

Designed Around Your Home

Every property in Hampstead has its own character. We design each structure to suit your layout, style, and needs, so your home extension in Hampstead or loft conversion looks seamless and feels like it’s always been part of your home.

Brighter, Smarter Living

Our structural designs allow for wide steel spans, roof lights, and full-height glazing that fill your home with natural light. The result is a brighter, more open space that connects beautifully with your garden and enhances modern living.

Extra Space Without Moving

Need more space but want to stay in Hampstead? A well-planned rear extension or loft conversion gives you that extra room for a home office, a bigger kitchen, or another bedroom without the stress or cost of moving.

Long-Term Comfort and Value

With Building Control-ready designs and a focus on quality, your extension or loft conversion adds both comfort and long-term value. A carefully engineered project makes your property more desirable in the Hampstead market.

How Our Hampstead Structural Design Process Works

Planning a home extension in Hampstead or a loft conversion? Here’s how we take your project from the first enquiry through to full Building Control approval.

Upload Drawings or Sketches

Send us your architectural drawings, sketches, or photos. We’ll review them promptly and provide initial guidance for your Hampstead project.

Review and Fixed Quote

Within 24 hours, we’ll send a clear, fixed-fee quote along with the scope of work and any extra details we might need to begin.

Structural Calculations and Drawings

We produce all necessary structural calculations and drawings for your home extension or loft conversion in Hampstead — ready for Building Control submission.

Approval and Ongoing Support

We deal with any Building Control comments, provide reasonable revisions, and support your builder until the project is approved and signed off smoothly.

home extension Hampstead

Hampstead Homeowner – Rear Extension & Loft Conversion

★★★★★

“We’re so pleased with the support from Structural Engineer Calcs. They managed our home extension and loft conversion in Hampstead with complete professionalism. The calculations were spot on, the drawings were clear, and Building Control approved everything on the first review. The whole process was straightforward and stress-free — a genuine five-star experience.”

Structural Engineering Services For Hampstead

Structural Inspections And Reports

On-site inspections, crack assessments, and pre-extension advice to help you plan safely and confidently for your next project in Hampstead.

Qualified Structural Engineers For Hampstead Projects

Our chartered structural engineers have over 15 years of experience providing structural calculations for home extensions and loft conversions across Hampstead and Greater London.

15+ Years Experience
610+ Projects Delivered
5.0 Average Rating
  • Building Control-approved calculation packs and drawings
  • RSJ and connection design for open-plan layouts
  • Clear communication and fixed-fee pricing

Typical Cost for Hampstead Extension Calculations

Most home extension projects in Hampstead range between £300–£650, depending on beam spans and design complexity. Each project is assessed individually, and we always provide a clear, fixed-fee quote before starting any work.

FAQs

Do I need structural calculations for a home extension or loft conversion in Hampstead?

Yes. Building Control will require structural calculations to confirm your design is safe and compliant. We prepare full calculation packs and drawings for home extension Hampstead and loft conversion projects across Greater London.

How long do structural calculations take?

Most small to medium projects are completed within a few days once we receive your drawings and brief. If you have a deadline, let us know and we’ll prioritise where possible.

Can you work from my architect’s drawings or a simple sketch?

Yes. We can work from architectural plans, planning drawings or even clear sketches and photos. If you don’t have full drawings yet, we can still quote and offer early advice.

What information do you need to give me a quote?

Your address, existing or proposed drawings, and a short note describing what you’re planning — for example, an extension, loft, or wall removal. Photos of the house are very useful too.

Are your calculations accepted by Building Control?

Yes. All our reports and drawings follow UK Building Regulations and are formatted for easy review and approval by Building Control officers.

Do you cover other areas outside Hampstead?

Yes. We work across Hampstead, Highgate, Finchley, Camden, and the wider Greater London region. If you’re just outside these areas, we can usually still help — just ask.

Can you design RSJ beams for open-plan layouts and bi-fold openings?

Yes. We design steel beams for knock-throughs, extensions, and wide glazed openings. That includes beam sizing, padstones, posts, and all necessary connection details for your builder.

What about loft details like dormers, ridge beams and stairs headroom?

We design ridge beams, purlins, dormer frames and trimmers, and we check the floor structure and stair openings. We make sure your new loft is both practical and fully compliant.

Do you need to visit my property in Hampstead?

Not always. Many domestic projects can be completed using drawings, photos, and a short call. If a site visit in Hampstead will help, we’ll suggest it before starting.

How much do structural calculations cost?

We quote each job individually once we’ve seen your drawings and brief. All fees are fixed and transparent — no hidden extras or surprise costs.

What happens after I receive the calculations and drawings?

Pass them to your builder and Building Control. If any queries come up, we’ll respond quickly and provide any clarifications needed to keep things moving smoothly.

How do I get started?

Click Get Your Free Structural Quote, upload your drawings and tell us what you’re planning. We’ll review everything and send back a clear fixed-fee proposal.

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