Bespoke Granny Annexes – Designed & Built for Modern Living
Turn your garden into a comfortable, stylish living space with our fully tailored annex solutions
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.
Key Benefits of SIP Panel Granny Annexes
Exceptional Insulation & Energy Efficiency
SIP panels provide superior thermal performance, keeping your annexe warm in winter and cool in summer. This energy efficiency reduces heating and cooling costs while also lowering your carbon footprint — making it an eco-friendly investment that pays for itself over time.
Durability & Strength
Designed for structural integrity and longevity, SIP panels ensure your annexe remains safe, secure, and maintenance-friendly for decades. The robust build gives you peace of mind, knowing your new living space is built to last.
Faster Construction Time
With their modular design, SIP panels allow for rapid assembly, significantly reducing construction time compared to traditional methods. This means less disruption and quicker access to your new granny annexe.
Our Build Process: From Concept to Completion
1. Initial Consultation & Design
We start by discussing your vision and lifestyle needs. Our design team creates a bespoke plan that fits your garden and personal requirements perfectly.
2. Planning & Approvals
Our experts handle all planning permissions and building regulation approvals, ensuring the process is hassle-free and fully compliant with local requirements.
3. Site Preparation & Foundations
Once approved, we prepare the site and install screw piles or traditional foundations, creating a stable base ready for SIP panel assembly.
4. SIP Panel Construction
The SIP panels are assembled quickly and precisely, forming the structural shell of your annexe in a fraction of the time of conventional builds.
5. Exterior & Interior Finishing
We offer a variety of exterior finishes, from K-render to Siberian larch or red cedar cladding, while the interiors are completed with plumbing, electrics, kitchens, bathrooms, and modern decor.
6. Final Touches & Handover
We carry out painting, decorating, and any finishing touches. Once the build passes all checks, your annexe is move-in ready.
Get Your Free Quote Today – Limited Summer Slots Available!
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
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
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.

Book a free site survey !
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.