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Trusted Double Storey Extension Builders and Design

Looking for double storey extension builders who can transform your home with style, quality and care? Maxas offers premium two storey extension design and build services, combining expert craftsmanship with personalised design solutions to expand and elevate your living space.

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Why Choose Maxas for Your Double Storey Extension

At Maxas, we specialise in creating beautiful, functional double storey extensions that are tailored to your lifestyle and property. Our team of experienced tradespeople deliver outstanding results from start to finish, ensuring every two storey extension is completed on time, on budget and to the highest standards.

Comprehensive Double Storey Extension Services

As a trusted extension builder, Maxas provides a full range of services to extend your home upwards and outwards in ways that enhance both space and value. Our work includes:

Every double storey extension is designed with structural integrity, compliance, and long-term durability in mind. We work closely with you to understand your goals and guide you through planning, design choices, and construction progress.

One Extension Builder. Multiple Specialist Teams.

Choosing the right double storey extension builders means choosing a company that can manage every part of your project properly, without relying on disconnected subcontractors. With Maxas, your extension is delivered by a trusted team of specialists, working together under one group.

  • Maxas Design and Build – Complete design-and-build extension solutions, from concept to completion.
  • Maxas Developments – Professional building and construction expertise for larger-scale projects and high-quality structural work.
  • Maxas Plumbing and Heating – Reliable plumbing, heating and system installations to support kitchens, bathrooms and full extension builds.
  • Maxas Electrical – Certified electrical services for lighting, power, rewires, and smart home upgrades within your extension.
  • Maxas Renewables – Sustainable options, including renewable energy solutions to improve efficiency and reduce running costs.

This joined-up approach ensures your double storey extension runs smoothly, meets regulations, and achieves a consistently high finish, making Maxas a trusted choice for anyone searching for double storey extension design.

Double Storey Extension Design, Done Right

We tailor each project to the unique character of your home, ensuring your new double storey extension blends seamlessly with your existing architectural style while maximising the additional space and value it adds.

Double Storey Extension High Wycombe Exterior

Start Your Double Storey Extension Today

Ready to transform your home with a bespoke double storey extension? Contact Maxas, specialists in double storey extension design and build for quality, reliability, and exceptional service.

Frequently Asked Questions

Double storey extensions are less likely to fall under Permitted Development than single storey builds, so full planning permission is often required. We assess your property and proposed design at the outset and manage the planning application on your behalf.
Most double storey extensions take around 14 to 20 weeks on site, depending on scope, structural work and finish specification. We set out a clear build programme before work starts so you know what to expect at each stage.
Yes. We regularly design and build double storey extensions on period and older properties, with particular attention to structural tie-ins, foundations and matching materials so the new build integrates properly with the existing house.
We work year-round, so there's no single best time to start. Given double storey extensions typically involve planning permission, starting the design and application process early helps avoid delays once you're ready to build.
Yes. We design double storey extensions around your property's existing roofline, brickwork and proportions, so the additional storey looks like a natural extension of the original house rather than an obvious addition.
Fill in the form on this page or get in touch directly. We'll arrange an initial consultation to talk through your requirements, budget and timescales, then manage design, planning and build from start to finish.