House Extensions in Ascor & Windsor

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Bright room with white walls, wooden floor, and exposed beam. Sunlight streams through two skylights and large glass doors, creating a serene, airy feel.

At Nuova Home Improvements, we are the trusted building contractor for house extensions across Ascot, Sunningdale and the surrounding villages. With 15 years of hands-on experience, our home extension builders manage every stage of your build from foundations through to final finish — single storey, double storey, rear, side and wrap-around extensions. We’ve worked on some of the finest properties in Berkshire and we understand the standard that Ascot homeowners expect.

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Extensions

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Conversions

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Kitchens

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Bathrooms

✳︎ Extensions ✳︎ Conversions ✳︎ Kitchens ✳︎ Bathrooms

WHY EXTEND RATHER

THAN MOVE?

Unfinished attic with plywood flooring and an open skylight. Several wooden panels lean against walls, revealing storage areas beneath. Bright, natural light.

Ascot is one of Berkshire’s most desirable addresses, and for good reason. The properties here are exceptional — grand detached homes, generous plots, and the kind of space that lends itself perfectly to extending rather than moving. By the time you factor in stamp duty, agent fees and legal costs, moving in Ascot can cost £60,000 to £100,000 before you’ve unpacked a single box. A well-designed house extension gives you the space you need while adding serious value to an already premium property. As extension builders and renovation contractors operating across Ascot, Windsor and the wider Berkshire area for 15 years, we’ve helped homeowners make the most of outstanding properties without the disruption of moving.

The image is a black and white photo of a brick building with a row of windows and a lamp. Scaffolding is set up on the side, casting shadows.

What's Included in House Extension

Full Design & Build Service:Architectural drawings, planning applications, structural engineering and construction — all managed under one roof by your dedicated house extension builder.

Planning Permission Experts:Ascot sits within the Royal Borough of Windsor and Maidenhead. As an experienced building contractor working in this area, we understand the local planning authority requirements, including conservation area restrictions where applicable, and handle all applications on your behalf.

Accredited & Insured:All work is backed by a 10-year structural warranty and full public liability insurance.

Find the Right Extension for Your Home

  • A brick house with a modern glass extension featuring a large open door. Inside, a cozy living space with a sectional sofa and a dining area is visible.

    Single-Storey Extension

    Often Permitted Development eligible

    8–12 weeks build time

    From £1,500/m²

    MOST POPULAR

  • Two-story white house with a gable roof, featuring a small balcony and large glass sliding doors on the lower level. The sky is clear and blue.

    Double-Storey Extension

    Usually requires planning permission

    16–24 weeks build time

    From £1,800/m²

    BEST ROI

  • Two-story white house with a small patio. Glass doors lead to a bright interior. Bushes line the right side, and a chimney is visible. Tranquil setting.

    Wrap-Around Extension

    Planning permission required

    12–20 weeks build time

    From £2,000/m²

    DRAMATIC TRANSFORMATION

  • Modern house with large glass doors and a triangular window, opening to a green garden and tennis court. Indoor area features a cozy grey sofa, conveying tranquility.

    Orangery & Garden Room

    Garden rooms often PD eligible

    6–12 weeks build time

    From £25,000

    LIGHT & LIVING

What Our Clients Say

  • "Angelo recently completed a substantial and complicated renovation for my clients. From start to finish Angelo impressed me with the way he ran the team and organised the work, everything completed to a high standard. Incredibly competent and a complete joy to work with. I have no hesitation in recommending Angelo and hope we get to work together again soon."

    Claire T.

  • "Angelo completely a massive project over several months for us. The whole house has been completely transformed and we are delighted with the results! Angelo completed the work to an exceptional standard- he was very thorough, reliable and courteous throughout the entire project. And to top it off, he is a lovely person as well- which is important when you are sharing your space for months. We are so pleased that we found Angelo and would recommend him without hesitation!"

    Emily D.

  • "Angelo has just completed my kitchen installation and I must say I’m delighted with the professional finish and workmanship throughout the project. Always mindful, respectful and courteous working in my home, and due care and attention paid to every detail - nothing was too much, and I would wholeheartedly recommend"

    Pete C.

  • “We recently had our kitchen fitted by Angelo over the course of a week, Angelo transformed our space into a beautifully finished kitchen that looks fantastic. His attention to detail is evident in every corner, and it’s clear he takes pride in his work. Not only did Angelo do an excellent job, but he was also a pleasure to have around—friendly, professional, and always respectful of our home. He made sure to tidy up after himself every day, which we really appreciated!”

    Amit

FREQUENTLY

ASKED

QUESTIONS

  • Many extensions in Ascot fall under Permitted Development rights, but the Royal Borough of Windsor and Maidenhead has specific requirements worth checking early. If your property is in a conservation area or has had PD rights removed by an Article 4 Direction — which applies to parts of the Ascot and Sunningdale area — full planning permission will be required. We carry out a free pre-application assessment for every project and manage the full planning process on your behalf.

  • In Ascot, extension costs reflect both the South East premium and the quality of finish expected on premium properties. A single storey extension typically runs £1,800–£2,800 per m², while a double storey extension offers better value at £1,500–£2,200 per m² because foundations and roof costs are shared across both floors. For larger double storey rear extensions or side extensions the total investment varies significantly depending on specification and finish. Our home extension builders provide detailed, transparent quotes with no hidden costs before any work begins.

  • Build times depend on the type and size of extension. A single storey extension up to 20m² typically takes 8–12 weeks on site. A double storey extension or two storey rear extension usually runs 16–24 weeks from groundworks to completion. Add 6–10 weeks for design, planning checks and structural drawings before our extension builders break ground. We provide a precise programme at the start of every project

  • Item descripA single storey extension adds one level to your home — typically extending the ground floor to create a larger kitchen, living space or garden room. A double storey extension adds two levels simultaneously, giving you ground floor space plus an additional bedroom or bathroom above. Double storey extensions offer significantly better value per m² because the cost of foundations and roof is shared across both floors. For homeowners in Berkshire looking to maximise space and return on investment, our home extension builders typically recommend a double storey rear extension where plot size and planning allow.tion

Still have questions about your house extension?

WE’D LOVE TO HEAR FROM YOU!