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Unlock your home's potential...
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Transform your property and home lifestyle with our collection of bespoke living space design solutions that are built for your all-year-round comfort and enjoyment.

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Bespoke Orangeries:
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Create a stunning focal point for your home that embraces natural light and a perfect way to extend the kitchen or embrace open plan living.

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Premium Conservatories:
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Traditional or modern designs that will provide a natural light-filled space, letting you revel in the beauty of nature no matter the season.

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Luxury Oak Extensions:
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Add elegance to your home, create a natural connection with the outdoors and enhance your home well-being with the timeless beauty of oak.

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Modern Garden Buildings:
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Do you need more space to work, work-out or chill-out? An ideal way to extend your home living space into the garden.
Low maintenance - Thermally efficient - Quick install

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Louvered Roof Pergolas:
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Perfect for long, lazy summer days or all-season al-fresco dining, the Outdoor Living Pod brings contemporary style to your outdoor space.

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Premium Orangeries | Conservatories | Oak Extensions

  • Do you wish you had extra living space at home?
  • Can you imagine bringing the home and garden together?
  • Do you want more natural light to enhance your home?

Consider how great it would feel to be sitting at home in a few months’ time, confident knowing that you have a new living space that provides all of the above and more. A place where you can forever spend time with family, entertain guests or simply relax on your own.

What does adding a new glazed extension make possible for you?

Hallmark Glazed Extensions
  • Creates a tranquil oasis of calm to relax and escape from the stress of daily life
  • A place to enjoy your garden all year round
  • Provides a unique room for entertaining guests and hosting the family
  • A bright, airy and spacious environment that becomes the heart of the home

Custom Built Conservatories, Orangeries, Oak Extensions & Garden Rooms

Hallmark Glazed Extensions - Your Essential Guide

Download your Essential Guide to Planning your New Glazed Extension

As heard on...

More Radio - Sussex

Add a stamp of extra quality to your home environment by creating a new living space that provides more room, is lighter, and gives you a natural connection with the outdoors. Our glazed extensions and garden rooms are designed for all-year-round comfort and enjoyment.
Let your brand-new space evoke feelings and emotions that will enhance your home well-being and lifestyle.

Hallmark Glazed Extensions - Space
Hallmark Glazed Extensions - Air
Hallmark Glazed Extensions - Nature
Hallmark Glazed Extensions - Light

Located in Hailsham, East Sussex, our Head Office serves clients across Sussex, Hampshire, and the Home Counties. Our experienced & friendly team here at Hallmark Gazed Extensions will provide you with all the expertise you need to transform your home & garden with a new living space. Learn more about our vision & values here.

Do you have a project in mind?

Call  01323 671007 Today

For Your FREE Design Consultation

'Where great design evokes positive emotions'

Exceptional Designs for Orangeries, Conservatories, Kitchen Extensions

Hallmark Glazed Extensions - Conservatories
Hallmark Glazed Extensions - Orangery
Hallmark Glazed Extensions - Conservatories

Arrange your design consultation today

Book a design consultation with one of our friendly designers, who will discuss your project in more detail and advise you on the best path forward.

3 steps towards creating your new dream living space : Here’s how it works...
If you are thinking about having your own dream living space, adding both value to your home life and property, then we invite you to book a free, no-obligation design consultation today. Our knowledgeable design team has over 50 years of experience and will work with you from design to a built reality...

Design Consultation

Design Consultation

Our designer will arrange to meet at a time and date convenient for you to discuss your requirements in detail, providing initial ideas based on the functionality, aesthetics and realistic investment required to complete your project.

Design Proposal

Design Proposal

After your consultation our team will present to you a concept visualisation of what your new extended living space will look like along with a detailed quote proposal. Our job is to be here for you from conception to completion, answering any questions and walking you through the project process. This includes step by step help with the survey, design, planning, construction, and generally helping you take the next steps towards creating your new living space.

Design Installation

Design Installation

Once you've agreed the details of the design process and are happy to proceed, we can begin making your new living space a reality. That involves our experienced planning permission coordinators taking responsibility for any necessary applications on your behalf, so you can begin to focus on the fun job of deciding on the décor and choosing furnishings.

You’ve dreamed about it. Now you can do it!

Why choose Hallmark?

Hallmark's diverse team of expertise will ensure your project is managed from initial concept drawings and ideas to a built completion, often without the need and expense of an architect. Our services also include structural calculations, building regulations and planning applications. We do this whilst providing you with accurate and realistic cost projections for the entire project to ensure it fits within the agreed budget.

Your can have peace of mind knowing that your project will be in safe hands...

  • 50+ years design knowledge

  • Full design, planning application & build service

  • 3D design visual concepts & detailed quote proposals
  • Assure competent person scheme certified installers
  • Traditional & contemporary design style solutions
Orangery Kitchen Extension
  • Home Improvement Protection Deposit & Guarantee Insurance
  • Premium quality UPVC, Aluminium, Oak and Hardwood window & door frame options

  • High specification solar control double glazing - ensuring your living space will be usable all year round
  • Building Control standards compliant

Stunning new dining and lounge area


Happy Client Review
Aluminium Orangery Extension Project in Surrey

The team at Hallmark Glazed Extensions designed and built this stunning aluminium and uPVC hybrid framed orangery for our client, Mr Hook, in Surrey. The new living space provides a stunning new dining and lounge area that connects with the garden.

We hope you enjoy hearing what our client has to say about his experience from design to a built reality!

Mr Hook


exemplary in their workmanship


Dear Paul and Kevin,
We are very pleased with the appearance. The design, angles, guttering and profile of windows with mouldings all work well in our opinion. Thank you both for your input and steer to achieve the result.

Peter and Marcus were exemplary in their workmanship and helping me to understand and satisfy my curiosity. They battled against very high temperatures and a June which had over 200% of the average rainfall in our area. Very grateful to them.

Kind regards,

Armstrong Aluminium Orangery

Mr & Mrs Armstrong

Tunbridge Wells (Email correspondence - 06/07/21)


I can't tell you how pleased we are with the final product. What an looks amazing. Pete and Marcus are complete professionals, nothing was too much trouble, and they obviously take such pride in their work.

Mrs Fisher

East Sussex


Great knowledgeable design guidance. Project went to schedule and we were charged what we were quoted. Payment terms clearly laid out in the quote. Installation team were professional and courteous. They worked through a spell of very bad weather. Very happy with the finished result. Would recommend.

Mr Young
East Sussex


I am delighted with the finished conservatory and thank you for your advice, customer service and professional care in making this happen, the space has transformed the property and added a beautiful entertaining area.

Mr Lake
East Sussex

Yell Reviews for Hallmark Glazed Extensions

Check out our reviews on

a lot of thanks to your team...


Poolside Glass Roof Veranda

Thank you very much for all your work in creating my new veranda. This was a completely bespoke and unusual design so a lot of thanks to your team responsiveness and flexibility.

Mr Ferrie

Tunbridge Wells (Email correspondence - 04/04/24)

Let our experienced team of designers, installers, and associated trusted building trades plan and manage your project; giving it the Hallmark stamp of quality. Hallmark provides you with a full range of house extension, home improvement and outdoor living garden options.

  • Orangeries
  • Garden Rooms
  • Oak Extensions
  • Verandas
  • Conservatories
  • Kitchen Extensions
  • Windows & Doors
  • Louvered roof pergolas

We’re waiting for your call!

Bespoke Orangery and Conservatory Photos

Browse our galleries of Orangery and Conservatory Photos of projects we have completed for our clients.

Hallmark Glazed Extensions Ltd.
Proud members of

The Listed Property Owners' Club

The Listed Property Owners' Club

Have a question?

If you have a project in mind, you likely have lots of questions.

Give us a call on 01323 671007 or complete the form, tell us how we can help you and we'll get back to you as soon as possible.

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    Most Asked Questions

    Is planning approval required for a conservatory, orangery or oak extension?

    Usually not, since you are permitted to expand up to 6 metres for semi-detached/terraced houses and 8 metres for detached residences. If you reside in AONB or a National Park, you will usually require Planning Approval before constructing a glazed extension. The process of getting planning approval can be complex as well as time-consuming due to the quantity of documents required. At Hallmark, we believe that developing your new living space need not be so demanding. That is why our planning permission specialist will gladly deal with all on your behalf.

    Will the conservatory or orangery get too warm in summer as well chilly in the wintertime?

    Your new space will certainly be usable throughout the year as a result of the highest specification of solar regulated glass available. This means using reliable glass that gives as much as 86% warm deflection on a hot day as well as maximum warm retention on a chilly day. Ensuring your new living space is comfortable despite the time of year. We also advise using roof vents that help manage the temperature environment by releasing hot air when called for.

    Just how much should I anticipate to financially invest in my project?

    There are lots of variables that will affect just how much you ought to expect to invest in your Hallmark orangery, conservatory or home extension project. These include why you want to use your new living space as this will dictate the appropriate size. The design style is based either on personnel preference or what suits the property. The aesthetics of the design choice will reflect the frame material options i.e. upvc, aluminum or painted hardwood.

    Along with associated building work such as base and brick work, electrical requirements, underfloor heating as well as flooring options. Hallmark Glazed Extensions provides a bespoke design and installation solution, every project is individual so financial investment will differ considerably based on your requirements and budget ranging & property restrictions, frame material specifications. Based upon our experience of various types of projects installed for clients over the past 10 years the sensible financial investment required for a completed project will typically vary from ₤25K - ₤ 80K. Including all of the above as well as professional design drawings, planning and building regs fees, window, frame & glazing installation.

    What areas do you cover?

    Our head office is based in Hailsham, East Sussex and our projects take us across West Sussex, Surrey and Kent.

    Is the project guaranteed?

    Yes, we have you covered with a complete 10-year warranty on all our glazed extension projects that we construct.

    From the Advice Hub

    April 11, 2020

    Hallmark Glazed Extensions
    Open chat
    Hello - How can we help with your project? Please send details and we will contact you. Many thanks, the team at Hallmark Glazed Extensions