Our Services

House Extensions

Well-planned residential extensions that add space, value and lasting quality to your home.

A well-designed extension can transform how you live in your home. We plan, engineer and build extensions that add space, light and lasting value.

House Extensions by Marwells Construction

Every extension starts with understanding how you want to use your home. We take the time to discuss your goals, assess the existing structure and advise on the most practical way to achieve the space you need.

Because our structural engineers are part of the team, steel beam designs, extension openings and structural calculations are handled in-house. This improves coordination between design and construction, and helps your project move smoothly through Building Control.

From the foundations to the final finishes, we keep you informed at every stage so you always know how your project is progressing.

What We Offer

  • Single-storey rear and side extensions
  • Double-storey extensions
  • Wraparound and side return extensions
  • Steel beam design and installation
  • Structural calculations for Building Control
  • Electrical, heating and ventilation work

Supported by Our In-House Engineers

Every house extensions project benefits from our integrated engineering team, improving coordination, efficiency and quality control.

Structural Engineering

Electrical Engineering

Mechanical Engineering

How We Work

From Concept To Completion

Every project is unique, so we take the time to understand your goals and keep communication transparent at every stage.

See our full process
  1. 1

    Consultation & Site Visit

    We listen to your goals, visit the property where required and give you honest, practical advice before any commitment.

  2. 2

    Design & Engineering

    Our Structural, Electrical and Mechanical Engineers develop a coordinated plan, including calculations and supporting documents.

  3. 3

    Quotation & Agreement

    You receive a clear, free quotation and a written agreement setting out the scope of works, costs and expectations.

  4. 4

    Construction

    Our team delivers the work to a high standard, with transparent communication at every stage of the build.

  5. 5

    Completion & Handover

    We complete the project, check every detail with you and hand over a space that is functional, durable and built to last.

Marwells Construction

Frequently Asked Questions

Find answers to common questions about our construction services, project process and engineering expertise. If you need further information, our team is here to discuss your project and provide professional guidance.

Planning a house extension, loft conversion, refurbishment or new build?

Get in touch with Marwells Construction to discuss your project and receive a free, no-obligation quotation.

Call Us Get a Free Quote
Get a Free Quote