Conservatory Services in Southeast England
Aluminium & uPVC Conservatories for Homes and Commercial Buildings across Southeast England
Bespoke conservatories
High-performance conservatories that increase your property’s value.
Design a stunning, high-performance conservatory for your home or commercial building and enjoy the benefits for years to come.
Whether building a new conservatory or upgrading your current one, our stylish and durable designs enhance any property, from period homes and listed buildings to sleek, modern office premises.
Create a relaxing sunroom, dining area or office that is energy-efficient and offers year-round comfort regardless of the weather. Our qualified and trusted conservatory builders in Southeast England will deliver a conservatory that perfectly suits your needs.
At Instant Windows & Doors, attention to detail matters.
Designed with energy-saving features, our conservatories provide dynamic temperature control and significant long-term savings on monthly energy costs. Choose from our range of timeless designs, including the classic Victorian, Edwardian, Gable Lean-To, T- and versatile P-shaped conservatories.
Whether you want an aluminium or full uPVC conservatory, our expert conservatory services in Southeast England ensure your conservatory is built to the highest industry standards.
Key features of our aluminium & uPVC conservatories:
- Timeless designs with ornate detailing and stylish roofs
- Multi-faceted shapes for increased air flow and enhanced views
- Customisable styles, sizes, finishes and glazing designs
- Available in durable materials: aluminium and uPVC
- Energy-efficient with double-glazing to reduce energy costs
- Weather-resistant, low-maintenance conservatories
- Year-Round Comfort
- Timeless Aesthetic
- Increased Property Value
- Noise Reduction
- Weather Resistant
- Improved Ventilation
- Minimal Maintenance
- High Energy-Efficiency
- Enhanced Security
- Customisable Options
- Long-Lasting Durability
- Eco-Friendly
Why choose our conservatory builders in Southeast England:
Compliant with industry standards
FENSA-Registered Conservatory Installers
At Instant Windows & Doors, our conservatory builders are FENSA-registered. FENSA stands for Fenestration Self-Assessment and is a government-authorised scheme that monitors building regulation compliance for replacement windows and doors.
In friendly terms, a FENSA certificate assures you that the conservatory installer who fitted your conservatory window and door replacements has complied with Building Regulations and registered the installation with the Local Council - both are legal requirements!
If you ever decide to sell your home or business premises, proof of them is essential.High-Performance Security
PAS 24 British-Standard Conservatories
For home and business owners seeking to increase the level of security of a new or existing conservatory, you will be pleased to know that we deliver PAS 24-certified windows and doors that ensure your conservatory meets the strictest security standards.
Double-glazed windows and doors also add an extra layer of security to your home or commercial building. They are installed with an internal layer of glass that cannot be removed from the outside and top-notch British-standard multi-point locking systems that effectively deter opportunists from breaking in.
Our conservatories offer peace of mind for home and business owners across Southeast England.
Upgrade your Conservatory Windows & Doors to PAS 24 British Security Standard
PAS 24 is a UK security standard that assesses the performance of windows and doors against entry and intrusion.
PAS 24 certifies that a product has been tested and meets specific security requirements. At Instant Windows & Doors, all our conservatory windows and doors meet British security standards.
Insurance-Backed Guarantee
Backed by Home Improvement Protection Scheme
Invest with confidence. At Instant Windows & Doors, we use the best energy-rated systems available on the market and include a 10-year insurance-backed guarantee with every new aluminium and uPVC conservatory or upgrade.
It is also worth mentioning that our conservatories are backed by the Home Improvement Protection scheme - for your safety and investment security.Types of conservatories we install across Southeast England:
Victorian Style Conservatory
The Victorian Conservatory is widely recognised for its classic 19th-century design and intricate detailing. It features a steeply pitched roof and can be built in various shapes depending on your needs.
Our Victorian Conservatory builders will work with you to personalise your conservatory while increasing the natural light and air flowing throughout your property. Boost the value of your home or commercial building with an energy-efficient Victorian Conservatory in Southeast England.
Edwardian Style Conservatory
The Edwardian Conservatory differs from the Victorian Conservatory as it has a simpler, more rectangular design with broader, squared windows. Highly popular for its classic, symmetrical appearance and pitched roof, the Edwardian Conservatory guarantees increased light, space and year-round comfort.
Increase the value of your property with a new Edwardian Conservatory in Southeast England, installed to the highest industry standards.
P-Shaped Conservatory
The P-Shaped Conservatory combines Victorian and Edwardian features with modern materials and technology, resulting in a stunning, energy-efficient, multi-functional layout. While one part of the design extends outwards, the other forms a wider area that can connect to multiple rooms.
P-shaped conservatories are highly versatile and can transform your home or business premises. Create a bright, useful space with a new P-Shaped Conservatory in Southeast England.
T-Shaped Conservatory
The T-Shaped Conservatory originated in the early 1900s and is characterised by its bold, central projection that creates a ‘T’ shape when viewed from above. This highly efficient conservatory design creates a beautiful focal point while allowing for distinct zones within the conservatory.
At Instant Windows & Doors, we build and install T-shaped conservatories suited to all property styles; from timber-effect finishes for period properties to a wide range of colours and glazing designs for ultra-modern settings, we design conservatories that complement your existing design theme and colour scheme.
Lollipop Bell End Conservatory
The Lollipop Bell End Conservatory combines a round, bell-shaped roof with a distinctive gable end. This mostly glass design really opens the space, allowing abundant natural light to brighten your property. Bring the outdoors in and enjoy a beautiful garden room or a peaceful office space.
Whatever your preference, our conservatory builders in Southeast England are on call to answer your questions and guide you through everything you need to know.
Gable End Conservatory
While similar to the Lollipop Bell End Conservatory, the Gable End Conservatory features large glass panels for increased natural light and impressive views. Its triangular high ceiling creates a sense of openness and space, resulting in a bright, airy Gable End Conservatory that satisfies all your needs.
Increase the value of your property with a new Gable End Conservatory in Southeast England, installed to the highest industry standards.
Gable Lean-To Conservatory
The Gable Lean-To Conservatory features a sleek, single-pitched roof, making it a great choice for homes and commercial buildings with lower rooflines or limited space.
It features large glass panels, which enhance natural light and views, and offers excellent energy-saving features that keep your conservatory comfortable all year round. Increase the value of your property with a Gable Lean-To Conservatory anywhere in Southeast England.
We build conservatories that transform your lifestyle.Conservatory Services FAQs: Design, Installation & Roof Replacements in South East England
We design and build a wide range of uPVC and aluminium conservatories, including Victorian, Edwardian, Lean-to, P-shaped, T-shaped and bespoke designs. Each project is tailored to suit your property, lifestyle and budget.
Most conservatories fall under permitted development and do not require planning permission if they meet certain size and placement limits. However, projects on listed buildings or in conservation areas may require approval. We’ll confirm requirements during your free survey.
Yes — we offer conservatory roof replacements with glass, tiled or solid roof systems. Upgrading your roof improves thermal efficiency, comfort and usability, turning your conservatory into a true year-round living space.
Our conservatories are designed with thermally broken frames, high-performance double/triple glazing and insulated roof options. This ensures excellent U-values, helping you enjoy a bright, comfortable space without excessive heating or cooling costs.
We build conservatories using durable uPVC or slimline aluminium frames. Both offer strength, energy efficiency and low maintenance. Aluminium provides a sleek, contemporary look, while uPVC is a cost-effective and versatile option.
Yes — conservatories are fully bespoke. You can choose the style, size, frame colours, glazing, roof type and internal finishes. Whether you want a modern extension or a traditional design, we’ll tailor the project to your needs.
Costs vary depending on size, style, materials, glazing and roof specification. We provide free, no-obligation, itemised quotes and offer finance options (subject to status) to make your project affordable.
On average, a conservatory takes 2–4 weeks to build after survey and manufacturing, depending on complexity and site preparation. We’ll provide a detailed timeline during your quotation and keep you updated throughout the project.
Yes — a well-designed conservatory can significantly increase your home’s value, living space and kerb appeal. With improved insulation and style, it’s an attractive feature for potential buyers.
All our conservatory installations come with a 10-year insurance-backed guarantee, plus manufacturer warranties on frames, glazing and roof systems. Installations are also FENSA-registered where applicable for Building Regulation compliance.
We install conservatories across Hampshire, West Sussex, East Sussex, Surrey, Berkshire and parts of Kent & Greater London. See our Areas We Cover page or Request a Quote for service availability in your location.
Call 0800 368 9166, message us on WhatsApp 07932 960284, email sales@instantwindowsanddoors.co.uk or fill in the Request a Quote form. We’ll arrange a free survey and provide expert recommendations for your project.
Call us to discuss
your project.
Contact Martin & his team for a free conservatory quotation.
At Instant Windows & Doors, we provide reliable and trustworthy conservatory services in Southeast England.
Book one of our local and certified conservatory builders in your area and receive a rapid-response service with no call-out charge and a super-fast turnaround.
We always make time for our clients and promise to deliver personalised conservatory services according to your needs.
Receive expert guidance based on your requirements and make informed decisions to ensure you get the most out of our conservatory services in Southeast England.At Instant Windows, your
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Our skilled, insured, licensed, and certified
installation professionals offer seamless
window and door installations for both
residential and commercial properties.
Contact us to discuss your project
Competitively priced windows and doors in Southeast England.
At Instant Windows & Doors, we assure you of a dependable and trustworthy window and door installation and repair service available throughout Southeast England. Schedule one of our local, certified installers in your vicinity, and enjoy a prompt response without any call-out fees and swift service turnaround.
We are dedicated to prioritising our clients and ensuring the provision of expert window and door installation and repair services tailored to your specific requirements.
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Instant Windows and Doors
Unit 4 Raleigh Court
Priestley Way
Crawley
West Sussex
RH10 9PD
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