MYGRANNYANNEXE
Ideas, projects & practical advice
Practical advice and project stories from our construction team.
Fresh ideas for your next building project.
Five new guides from MyGrannyAnnexe: practical decisions before you build.
SIP CONSTRUCTION
Planning a SIP building: from first drawings to installation
A successful SIP project begins before the first panel arrives. Here is how to turn an idea for a garden building into a coordinated design and construction brief.
HEATING & COOLING
Air conditioning in a garden room: sizing, placement and everyday comfort
A comfortable garden room needs more than an air-conditioning unit on the wall. The best starting point is the room, its glazing and the way you plan to use it.
THERMAL INSULATION
Garden building insulation: why the roof, floor and junctions matter
Warm walls are only part of a comfortable building. Look at the complete envelope when comparing insulation specifications for a garden room or granny annexe.
IDEAS & EVERYDAY LIVING
Office, gym or family annexe? Design your garden building around daily life
The most useful garden building starts with a routine, not a photograph. Decide what the space should make easier, then develop the layout around that purpose.
BUILDING CONTROL
Building control for a garden annexe: what to prepare before you build
Deal with approvals before construction begins. A clear project brief and an agreed inspection process make it easier to understand what your annexe needs at each stage.
Airtightness in SIP Construction – The Multiplier of Performance
Learn why airtightness in SIP construction improves comfort, cuts heat loss and boosts energy performance all year round.
Benefits of having a garden office at your disposal
Discover the benefits of having a garden office, from better focus and no commute to more comfort, flexibility and family time.
Let`s build your dream Granny Annexe
Discover bespoke granny flats built for comfort, independence and long-term value, with full design and build by MyGrannyAnnexe.
Building with SIP Panels Versus Timber Frames
Compare SIP panels and timber frame construction for insulation, strength, build speed, durability and long-term performance.
Flood Zone 2 Granny Annexe Guide
Can you build a granny annexe in Flood Zone 2? Learn how flood risk, raised floor levels and screw pile foundations can affect planning and design.
Choosing the Right Foundation for Garden Rooms & Granny Annexes
Compare screw piles, concrete pads and raft foundations to choose the right base for your garden room or granny annexe.
Accessible Granny Annexes: Comfort, Dignity
Design a granny annexe with accessibility in mind, including step-free access, wider doorways, safer bathrooms and future-proofed living.
Optimum garden room size for you.
Learn how to size a garden room efficiently by balancing budget, available space, intended use and planning rules.
🌿 Why New Electric Regulations Matter for Your Garden Room ⚡
Learn why new electrical regulations matter for garden rooms, including safety, compliance, certification and future-proofing.
EPS vs PUR/PIR SIP Panels Explained
Compare EPS and foam-injected PUR/PIR SIP panels for insulation, strength, thermal performance and year-round building comfort.
Comparing Exterior Cladding Options: Western Red Cedar, Thermowood, and Silicone K-Render Systems
Compare cedar, Thermowood and silicone K-render cladding for garden buildings, including appearance, durability and maintenance.
Garden rooms and Granny Annexes with air con units .
Garden rooms with air con for year-round comfort, cooling, heating and better use of your space at home or for work.
Granny Annexe Planning Permission UK
Learn when a granny annexe needs planning permission, when permitted development may apply, and what often leads to refusal.
Granny Annexe vs Care Home
Compare granny annexes and care homes for cost, independence, comfort and family living to help choose the right option for your family.
Integrate home automation on Garden Rooms and Granny Annexes
Discover home automation for garden rooms and granny annexes, including smart lighting, heating, security and voice control.
Fitness should be straightforward and practical
Discover the advantages of a home gym, from privacy and flexibility to convenience, comfort and better use of your space.
Bespoke Garden Rooms and buildings are the best way to transform your garden
Learn how to choose a garden room builder in the UK by comparing materials, past projects, experience, insurance and reputation.
Understanding structural performance, insulation values, and best options for garden rooms, extensions, and annexes.
Learn how to choose the right SIP panel thickness for your extension, balancing insulation, structural strength and long-term comfort.
Importance of granny annexes
Discover the importance of granny annexes for family living, independence, comfort and creating flexible extra space at home.
What Is A Granny Annexe?
Learn what a granny annexe is, how it can be used, planning basics and what to consider before building one.
Innovative ways to enhance energy efficiency
Learn how SIP panels help lower heating bills through better insulation, airtight construction and improved energy efficiency.
Turning Challenges into Opportunities: Building a Dream Garden Room
See how complex access, craning and site constraints were overcome to build a high-quality dream garden room in London.
The use of SIP (Structural Insulated Panels) panels contributes significantly to energy efficiency and reduced heating or cooling costs
See how SIP panels improve garden rooms, granny annexes and home extensions with better insulation, speed and year-round comfort.
Do I need planning permission for my Garden Building?
Learn when timber garden buildings need planning permission, including height limits, boundaries, permitted development and rules.
Environmental Benefits
Learn the benefits of sedum roofs on SIP buildings, including insulation, drainage, biodiversity and long-term performance.
SIP Panel Thickness: Where Performance Begins
Learn why SIP panel thickness affects insulation, comfort, condensation control and year-round performance in garden rooms and annexes.
Understanding SIP Panels: U-Values and New British Standards
Learn how SIP panel U-values and British Standards affect insulation, compliance and energy performance in modern buildings.
Structural Strength of SIP Panels – More Than Just Insulation
Learn how SIP panels deliver structural strength, rigidity and long-term stability, not just insulation, in annexes and garden rooms.
Lighting of your garden room
Learn how structure and lighting affect comfort, strength and usability in a garden room, from natural light to long-term performance.
Why Granny Annexes Are Trending in 2025
A practical guide to granny annexe design, costs, planning and modern SIP construction methods in the UK.
Thermal Comfort in SIP Buildings – It’s Not Just About Energy Bills
See why thermal comfort in SIP buildings is about more than energy bills, including surface warmth, condensation control and comfort.
Enhancing Modern Construction with Efficiency and Sustainability
Learn how new building regulations affect construction and how SIP panels help with insulation, compliance and energy efficiency.
Understanding SIPs Beyond the Marketing
Learn what SIPs really are beyond the marketing, including structure, insulation, composite action and long-term performance.
Sub-Floor Ventilation for Screw-Pile Garden Rooms
Learn why ventilation under screw-pile garden rooms and granny annexes matters for moisture control, compliance and long-term performance.
What are garden offices?
Learn what garden offices are, how they work and why they create a practical, separate workspace at home.
Key Benefits of Living in a Granny Annexe
See why annexes are becoming a smart housing solution in the UK, offering flexible living, independence and long-term value.
Man Cave
Discover why a man cave can add comfort, storage, relaxation and flexible extra space at home for work, hobbies or downtime.
Garden rooms for all your needs
See why building a garden room adds flexible extra space for work, leisure, guests, fitness or hobbies without extending your home.
Garden Room -your new home office
Explore garden room ideas for working from home, with practical tips on space, light, comfort and creating a better home office.
Let’s talk about your garden.
Tell us what you have in mind. We can discuss your space, layout, planning considerations and the next steps.