At TRJ Construction Ltd, we specialize in creating high-quality, custom-built granny annexes using advanced Structural Insulated Panels (SIPs). Our granny annexes are designed for maximum energy efficiency, strength, and superior insulation, ensuring comfort throughout the year.

Ideal for accommodating elderly relatives or adding extra living space, our bespoke granny annexes seamlessly blend modern design with practical functionality, making them the perfect solution for your needs. Experience a new level of comfort and convenience with a custom-built granny annexe from TRJ Construction Ltd.

Why Choose SIP Panels for Your Bespoke Granny Annexe?

Exceptional Insulation & Energy Efficiency

SIP panels deliver outstanding thermal performance, keeping your granny annexe warm in winter and cool in summer. Their superior insulation properties lead to reduced energy consumption, which translates into lower utility bills and a smaller carbon footprint. Opting for SIP technology is an eco-friendly investment that maximizes energy efficiency in your living space.

Durability & Strength

SIP panels are built for durability and strength, providing exceptional structural integrity. This robust construction ensures your annexe remains safe, secure, and long-lasting, offering peace of mind and excellent value for money.

Faster Construction Time

Thanks to the modular design of SIP panels, the construction process is much quicker than traditional building methods. With rapid assembly, your granny annexe is ready in less time, reducing disruption to your daily routine and providing quicker access to your new space.

The Building Process: From Concept to Completion

Initial Consultation and Design

We begin by discussing your vision and needs in an initial consultation. Our experienced designers will craft a bespoke design tailored to your specifications, ensuring your granny annexe fits your lifestyle perfectly.

Planning and Approvals

We handle all planning permissions and regulatory approvals, ensuring the project complies with local building codes. This ensures a seamless process and avoids legal issues.

Site Preparation and Foundations

Once approvals are in place, we prepare the site and lay stable foundations, whether through screw piles or traditional methods, ensuring a solid base for your new annexe.

SIP Panel Construction

With foundations in place, we quickly assemble the SIP panels, known for their precision-engineered fit. This rapid construction method creates the structural framework efficiently, bringing your project to life faster.

Exterior and Interior Finishing

We finish the external appearance with options like K-render or red cedar cladding. Inside, we install all necessary features, from insulation and plumbing to electrical systems, as well as custom fixtures such as kitchens and bathrooms.

Final Touches and Handover

After painting, decorating, and a thorough clean-up, we complete any final tweaks to ensure everything is perfect. Once finished, your move-in-ready granny annexe is handed over, and you can enjoy your new space immediately.

Why Choose TRJ Construction Ltd for Your Granny Annexe

Expertise & Accreditation

With years of experience in constructing bespoke granny annexes, TRJ Construction Ltd is a trusted name in the industry. We are fully accredited, ensuring every project meets the highest standards.

Custom-Tailored Solutions

We offer customized designs to suit your unique needs. From the design phase to final completion, we ensure that your granny annexe is a perfect fit for your requirements.

Comprehensive Project Management

We handle every aspect of the construction process, from securing planning permissions to overseeing the final handover. Our expert project management ensures a smooth, stress-free experience.

Sustainable Building Practices

By using SIP panels, we promote sustainable construction methods that reduce environmental impact and improve energy efficiency. Choosing us means you're making an environmentally responsible choice for your property.

Customer Satisfaction

We focus on quality and attention to detail to ensure that your granny annexe exceeds expectations. Your satisfaction is our priority, and we take pride in delivering exceptional service from start to finish.

Get Started Today

Ready to enhance your property with a custom granny annexe? Contact TRJ Construction Ltd for a free consultation and let our expert team bring your vision to life. Browse our portfolio to see the stunning granny annexes we've created for our satisfied clients. For more information and to start your project today, visit our website at www.trj-construction.co.uk.

Bespoke Features for Your Needs

You will have a project manager to speak to at every stage of the design and build.


A granny annexe is a self-contained living space typically built on the grounds of a family home, providing independent living for an elderly relative. Often used by grandparents or other elderly family members, granny annexes allow individuals to maintain their independence while staying close to their loved ones. These units typically include a bedroom, bathroom, living room, and kitchenette, along with features like ramps and grab bars for enhanced accessibility.

Get Started Today

Are you ready to transform your property with a bespoke granny annexe? Contact TRJ Construction Ltd today to schedule your free consultation and start planning your ideal living space with our expert team. Visit our website at www.trj-construction.co.uk to see our portfolio of completed projects and learn more about our services.

Included in Granny Annexe the price .


• Individually designed to your exact specifications

• Spacious open plan living and dining area

• Separate bedroom with en-suite shower room

• Modern kitchenette including sink and taps, built-in stainless steel electric single oven, hob with extractor fan

• Fully building control compliant

• Plastered walls and ceiling

• Latest Structural Insulated Panel System (SIPS) – providing extremely good insulation

• Pitched roof with slate roof tiles of flat roof

• Low maintenance PVCu French doors and casement windows in colour that you chose

• All integral electrics and lighting

• Spacious vaulted ceiling (for pitched roof systems )

  • Maximize Your Living Space with a Custom Garden Room or Office

    Garden rooms offer a stylish and practical way to expand your home without the hassle or expense of moving. Whether you're looking for a peaceful retreat, a home office, or a versatile living space, a well-designed garden room can enhance both your lifestyle and property value.


    Why Choose a Garden Room?

    Also known as a granny annexe, these modern outdoor structures are incredibly versatile and can be used for multiple purposes, including:

    ✔️ Home Office – Work from home in a quiet, productive environment.

    ✔️ Playroom – Create a dedicated space for your children to play and learn.

    ✔️ Gym or Yoga Studio – Enjoy fitness and wellness at home.

    ✔️ Dining or Entertainment Area – Host guests in a stylish garden extension.


    At TRJ Construction, we specialize in high-quality, custom-built garden rooms designed to meet your unique needs. Whether you prefer a compact garden office with smart storage solutions or a spacious annexe with modern technology, we build with premium materials for durability and energy efficiency.


    Garden Offices: The Perfect Work-From-Home Solution

    A garden office allows you to separate work from home life while enjoying a calm and inspiring outdoor setting. Our TRJ Construction Garden Offices come in various sizes and styles, ensuring you find the perfect fit for your space and budget.


    With options for insulated walls, built-in storage, and modern finishes, our designs help you stay productive and comfortable year-round.


    Custom-Built for Your Needs

    Every garden room or office we build is tailored to your preferences, ensuring a seamless blend with your home and outdoor space. Choose from various designs, layouts, and high-tech features to create the ultimate personal retreat or workspace.


    💬 Get a Free Consultation Today!

    Discover how a garden room or office can transform your home. Contact TRJ Construction today for a free consultation and expert advice on the best solution for your space.



  • Discover the Perfect Bespoke Garden Building for Your Home

    At TRJ Construction Ltd, we specialize in designing and building custom garden structures tailored to your lifestyle. Whether you need extra living space, a dedicated workspace, or a stylish outdoor retreat, we offer a wide range of high-quality, bespoke garden buildings to suit every need.


    Types of Bespoke Garden Buildings We Offer

    🏡 Living & Utility Spaces


    Lodge

    Barn

    Shed

    Garage

    Workshop

    Utility Room

    Laundry Room

    Toilet

    💼 Work & Productivity Spaces


    Home Office

    Study

    Playroom

    Games Room

    Gym

    🌿 Outdoor Leisure & Entertainment


    Summerhouse

    Sun Lounge

    Conservatory

    Log Cabin

    Gazebo

    Pergola

    Lean-to

    Pool House

    Greenhouse

    Children’s Playhouse

    🔥 Luxury Additions & Outdoor Living


    Sauna & Shower Area

    Barbecue Area

    Outdoor Kitchen

    Terrace & Patio

    Tailored to Your Needs

    Every structure we build is crafted with premium materials, ensuring durability, energy efficiency, and a seamless blend with your existing space. Whether you're looking for a modern home office, a cozy lodge, or a luxurious sun lounge, we bring your vision to life with expert craftsmanship and attention to detail.


    Transform Your Outdoor Space Today!

    Let TRJ Construction Ltd help you create the perfect garden building to enhance your home. 💬 Get in touch for a free consultation and custom design solutions!



  • What are the benefits of garden rooms?

    Why Choose a Granny Annexe?

    🏡 More Space Without Moving – Add extra living space without altering your home’s footprint.

    🌿 A Natural Retreat – Enjoy the beauty of nature in a comfortable, enclosed environment.

    👨‍👩‍👧‍👦 Ideal for Family & Friends – Create a cozy space for socializing, relaxing, or even working.

    🐶 Pet-Friendly – A secure and sheltered area where pets can enjoy the outdoors with you.


    Perfect for Gardening Enthusiasts

    🌱 Mini-Greenhouse Alternative – If you love gardening but lack space, a garden room provides the perfect controlled environment for plants.

    🌞 Enjoy the Outdoors Indoors – Experience nature without exposure to unpredictable weather.


    Custom-Built for Your Needs

    At TRJ Construction Ltd, we create bespoke garden rooms designed to match your lifestyle. Whether you need a tranquil retreat, a home office, or a greenhouse-inspired space, our high-quality, insulated designs ensure year-round comfort and energy efficiency.


    Transform Your Garden Today!

    Looking for a custom garden room to enhance your home? 💬 Contact TRJ Construction Ltd today for a free consultation and personalized design options!



  • TRJ Construction Ltd – Experts in Bespoke Garden Rooms & Outdoor Structures

    At TRJ Construction Ltd, we specialize in custom garden rooms, offices, and unique outdoor structures designed to enhance your home or business. With our expert craftsmanship and tailored solutions, we bring your vision to life—all within your budget.


    Our Bespoke Services Include:

    🏡 Garden Rooms – Stylish, insulated, and built to suit your needs.

    💼 Garden Offices – A perfect work-from-home space in a peaceful setting.

    🎮 Man Caves & Entertainment Spaces – Create the ultimate retreat in your garden.

    🏢 Commercial & Educational Buildings – Including school buildings, exhibition spaces, and play areas.


    Transform Your Garden with Custom-Built Spaces

    Our bespoke structures allow you to maximize your outdoor space, whether you need:

    ✔️ A playhouse for kids

    ✔️ A creative studio

    ✔️ A fully functional workspace

    ✔️ A modern garden extension


    At TRJ Construction Ltd, we combine premium materials, innovative design, and expert craftsmanship to deliver high-quality, durable, and energy-efficient buildings.


    Let’s Build Your Dream Space!

    💬 Contact TRJ Construction Ltd today for a free consultation and discover how we can transform your outdoor space!

  • Hassle-Free Installation with No Planning Permission Needed

    🚀 Quick & Easy Setup – Many of our garden rooms can be installed without planning permission.

    🏡 Customizable Designs – Choose from lodges, cottages, or fully-equipped granny annexes to suit your style.

    🌿 Seamless Integration – Our buildings are designed to enhance your home's appearance and functionality.


    Your Perfect Outdoor Space Awaits!

    💬 Get in touch with TRJ Construction Ltd today to explore our range of bespoke garden rooms and granny annexes!

The Process of Building Your Bespoke Granny Annexe

At TRJ Construction Ltd, we make the process of designing and building your granny annexe seamless and stress-free. From the initial consultation to the final handover, we ensure every detail is tailored to your needs.

Step 1: Free Site Visit & Consultation

📍 On-Site Assessment – Our expert team will visit your property to discuss your requirements, budget, and available options.
📐
Best Placement Advice – Our designer will recommend the ideal space in your garden for the annexe, considering size, accessibility, and aesthetics.
🏡
Inspiration from Past Projects – You’ll have the opportunity to view completed granny annexes to visualize your dream space.

Step 2: Technical Survey & Planning

🔍 Detailed Plot Measurement – We conduct a thorough technical survey to assess:
✔️ Soil conditions
✔️ Drainage systems
✔️ Foundation specifications
📊
Comprehensive Planning – Our team creates detailed floor plans, 3D models, and technical drawings to bring your vision to life.

Step 3: Custom Annexe Design & Pricing

🎨 Bespoke Design Process – Your annexe will be designed to match your specific needs and lifestyle, including:
✔️
Living Room & Dining Area – Spacious and comfortable.
✔️
Kitchen & Bathroom – Fully equipped and modern.
✔️
Personalized Features – Layout, finishes, and additional features tailored to you.
📋
Transparent Pricing – We calculate all costs upfront and provide a fully inclusive price quotation with no hidden fees.

Step 4: Final Approval & Construction

🏗️ Project Planning – Once you approve the design, our technical designers finalize all plans, and we prepare for construction.
🚀
Expert Craftsmanship – Our experienced builders ensure a high-quality, energy-efficient structure that meets all building regulations.
🔑
Move-In Ready – Your bespoke granny annexe will be delivered and installed with a smooth, hassle-free experience.

Start Your Granny Annexe Journey Today!

📞 Book your FREE site survey with TRJ Construction Ltd today! Let’s design and build your perfect granny annexe—customized just for you.

From concept to completion, each Granny Annexe is designed to your exact specification

Explore Our Granny Annexe Projects

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