
Conservatories
Add a bright room that connects your home and garden. Ask us about frames, glazing, roofs and a layout that suits how you live.
Ask about thisConservatories, orangeries and extensions
GJM Construction helps homeowners add space, light and practical value. Tell us what you want to change. We will help you plan the next step.
Building company with a registered office in Portsmouth

What we do
From a new garden room to practical building work, start with a conversation about your home.

Add a bright room that connects your home and garden. Ask us about frames, glazing, roofs and a layout that suits how you live.
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Combine solid structure with a lot of natural light. An orangery can give you a new room for meals, work or time together.
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Make more space where you need it. Talk to us about an extension to your kitchen, living area or another part of your home.
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Ask about structural alterations, brickwork, openings, roof lanterns, bifold doors and related improvements to your home.
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A clear way to build
Every home and every project is different. We keep the first steps simple, so you know what happens next.
We listen to what you need and look at the space before we discuss the work.
You get a clear description of the proposed work and a written quote before you decide.
You can ask questions as the work moves from preparation to completion.
Space and light
Explore ideas for light-filled rooms and glazed spaces. These licensed stock photos show examples, not GJM projects.










Photos from Pexels. See photographers and licences.
From idea to quote
Use the form below. Include the type of work and what you want to change.
We can arrange a visit to understand the space and discuss the options.
Read the proposed scope and price. Ask any questions before you decide.
Your project
Tell us about your project. A few details are enough to start the conversation.
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