Conservatory Winchester
Adding a conservatory is one of the most cost-effective ways to extend your Winchester home. Whether you live in a Victorian terrace in Fulflood or a detached family home in Harestock, a well-designed conservatory bridges the gap between your indoor living space and your garden.
At KJM Group, we don’t just build “glass boxes.” We create high-performance extensions designed for modern living. Using advanced solar-control glazing and fully insulated bases, our conservatories are built to be used 365 days a year—warm in winter and cool in summer.
You can view our complete range of Winchester windows, doors, and conservatories here.
Winchester Conservatories: Key Benefits
- In-House Builders: Uniquely, we employ our own building teams to handle foundations and brickwork—no unreliable sub-contractors.
- Solid & Warm Roofs: Choose a tiled or hybrid roof for the ultimate thermal performance and the feel of a permanent extension usable 365 days a year.
- Solar Control Glazing: Prefer a glass roof? Our advanced performance glass reflects solar heat in summer while retaining warmth in winter.
- Bespoke Design: Custom-designed Edwardian, Victorian, and Lean-to styles to complement Winchester's diverse architecture.
- Full Management: We handle everything from Planning Permission (if needed) to electrics and heating.
Performance & Comfort
Beyond the “Greenhouse”: Year-Round Comfort Many older conservatories in Hampshire sit unused for half the year because they freeze in winter and bake in summer. We have solved this.
We use Ambience and Celsius performance glass, which can reflect up to 86% of solar heat while retaining internal warmth. If you are looking for something more solid, we also specialise in hup! extensions and hybrid solid roofs. This technology allows you to create a bright, airy open-plan dining room or lounge that feels just as comfortable as the rest of your house, regardless of the weather outside.
Design & Planning
Designed for Winchester Architecture Winchester has a unique architectural character, and a “one size fits all” plastic conservatory rarely looks right. We offer a bespoke design service to ensure your new extension complements your home.
From classic Edwardian and Victorian styles that suit period properties in St Cross, to clean-lined Lean-Tos for modern bungalows, we tailor every detail. We can match your existing brickwork, handle local Planning Permission applications (essential in conservation areas), and offer frames in timber, aluminium, or timber-effect uPVC to blend seamlessly with your property.
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Why Choose KJM for Your Conservatory?
We Employ Our Own Builders
Unlike many double glazing companies that sub-contract the “messy bit” (foundations and brickwork), we employ our own building teams. This means the same company is accountable for your entire project, from digging the first footing to plastering the final wall. It ensures strict quality control and a smoother schedule for you.
Complete Project Management
A conservatory is a building project, not just a window installation. We manage the entire process, including Planning Permission (if required), Building Regulations approval, electrics, and heating. You deal with one project manager, not five different tradesmen.
Local Experts Since 1983
We have been building extensions in Hampshire for over 40 years. We understand the local soil conditions and architectural styles of Winchester, ensuring your new conservatory stands the test of time.
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Accurate Conservatory Prices in Winchester
If your Winchester home needs a new conservatory, you have come to the right place. For over 40 years, KJM Group has been installing high-performance roofs across Hampshire. We believe in being transparent with our costs, which is why we offer three easy ways to get a quote:
- Online: Use our pricing engine on this page for an instant guide price in minutes.
- Email: Send us your approximate measurements and photos for a quick estimate.
- Home Visit (Recommended): For the most accurate figure, let us pop round for a quick survey.
Get it Priced Properly
A warm roof conversion is a structural project. A brief site visit allows us to check your existing frames and load-bearing support, ensuring we price the job properly from the start, with no hidden surprises later.
Our No Pressure Promise
We know inviting a company into your home can be daunting. We are different. We don’t use high-pressure sales tactics or stay in your house for hours. You will simply get honest, expert advice and a fixed written price to consider in your own time—completely hassle-free.
See why we are top-rated on Google, Which? and Checkatrade, or call us on 01264 359355 to arrange your free survey.
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Thinking of a New Conservatory?
In most cases, conservatories are considered "Permitted Development" and do not require full Planning Permission, provided they meet certain limits (e.g., size and height).
However, if you live in a Conservation Area (like St Cross or Hyde) or if your property has had its rights removed, you may need permission. KJM manages this entire process for you. We will check your property’s status and handle any necessary applications with Winchester City Council.
A typical project usually takes between 3 to 5 weeks on site, depending on the complexity of the groundworks and the size of the build.
Because KJM employs our own in-house building teams rather than relying on sub-contractors, we have tighter control over the schedule. This minimizes delays between digging the foundations and installing the frames, ensuring a smoother experience for you.
Yes, significantly. A conservatory or orangery typically costs considerably less per square metre than a traditional brick-and-block extension.
Despite the lower cost, modern high-performance glass and warm roofs mean you don't have to sacrifice comfort. You get a fully usable, year-round living space for a fraction of the price of a standard extension.
Yes, creating an open-plan layout is very popular. However, removing the external doors between your house and the conservatory requires Building Regulations approval to ensure your home remains thermally efficient.
We can design your conservatory to meet these regulations (often using a solid warm roof or ultra-efficient glazing) and handle the sign-off process for you.
