Willow Court Granny Annexe in Hertfordshire
A warm, private and beautifully finished two-bedroom granny annexe designed for independent family living.
Willow Court is a bespoke timber-clad granny annexe in Hertfordshire, designed and built by TRJ Construction as a comfortable, self-contained home within the garden. The project combines a bright open-plan kitchen and living space, two bedrooms, a modern shower room, practical storage and a flexible home office area.
Built using high-performance SIP panel construction, this annexe was designed to feel like a real home — warm, quiet, efficient and finished to a high standard inside and out.
Project name:
Willow Court
Location:
Hertfordshire
Building type:
Bespoke granny annexe
Layout:
Two bedrooms, kitchen/living/dining, bathroom, office/flexible room
Construction method:
SIP panel structure
Exterior finish:
Premium timber cladding
Roof:
Pitched tiled roof
Use:
Independent family living
Service: Turnkey design and build by TRJ Construction
A Bespoke Granny Annexe Built Around Real Family Living
Willow Court was created for a family who wanted a private, long-term living space in the garden without losing the comfort and quality of a traditional home. The brief was simple: create a warm, practical and attractive annexe that would support independent living while keeping family close by.
The result is a light-filled garden home with a spacious open-plan living area, a fully fitted kitchen, two comfortable bedrooms, a modern bathroom and a dedicated workspace. Every area was planned to make daily life easier, from the practical kitchen layout to the generous storage and calm bedroom spaces.
This project shows how a granny annexe can be much more than an extra room. It can become a complete home.
Designed for Comfort, Privacy and Independence
The internal layout was planned to give the occupants everything they need in one self-contained space. The open-plan living, kitchen and dining area creates a sociable heart to the annexe, while the bedrooms are positioned away from the main living zone for privacy and rest.
Large windows, roof lights and glazed doors bring in natural light throughout the day. The warm timber flooring, soft neutral walls and carefully chosen furniture create a calm, homely feel.
Key design features include:
- Two private bedrooms
- Bright open-plan living and dining space
- Fully fitted kitchen with integrated appliances
- Modern shower room
- Separate office or hobby room
- Built-in wardrobes and practical storage
- Large glazed doors connecting the annexe to the garden
- Premium timber exterior cladding
- Pitched roof with a high-quality tiled finish
Open-Plan Kitchen, Dining and Living Area
The main living area was designed to feel spacious, bright and easy to use. The kitchen includes white fitted units, dark worktops, tiled splashbacks, an oven, hob, extractor, washing machine, fridge freezer and plenty of storage.
A dining table sits comfortably within the space, while the lounge area benefits from garden views through the large glazed doors. This gives the annexe a strong connection to the outside, making it feel open and inviting.
The vaulted ceiling and roof light above the kitchen help maximise natural light, making the room feel larger and more premium.
Two Comfortable Bedrooms
Willow Court includes two well-proportioned bedrooms, making it ideal for a parent, couple, visiting family member or live-in support arrangement.
The main bedroom has a calm, hotel-inspired feel with soft neutral colours, fitted wardrobes and warm timber flooring. The second bedroom was designed as a flexible guest room or additional sleeping space, with room for storage and personal furniture.
Both bedrooms are designed to feel like proper rooms inside a permanent home — not temporary accommodation.
Modern Shower Room
The bathroom was kept clean, bright and practical. It includes a walk-in shower enclosure, WC, basin vanity unit, mirror cabinet, towel rail and roof light for natural brightness.
The layout is simple and efficient, with enough space for comfortable daily use. Finishes were chosen to be easy to maintain while still feeling fresh and modern.
A Flexible Home Office or Hobby Room
One of the standout parts of this project is the flexible office area. This gives the annexe more than just living accommodation — it also creates space for working from home, hobbies, reading, exercise or private relaxation.
This type of room is especially useful in a granny annexe because needs can change over time. A flexible space gives the building more long-term value.
Exterior Design: Warm Timber Cladding and Garden Setting
Externally, Willow Court has a premium timber-clad finish with a pitched tiled roof, black rainwater goods and traditional-style exterior lighting. The design feels natural within the garden setting while still looking smart and substantial.
The large glazed entrance doors, warm evening lighting, planting and stepping-stone paths help the building feel connected to the garden rather than separate from it.
This is exactly what many families want from a granny annexe: a private home that sits beautifully within the existing property.
Built with SIP Panels for Year-Round Comfort
Willow Court was designed as a high-performance living space, not a basic garden outbuilding. SIP panel construction helps create a strong, well-insulated and energy-efficient structure.
This makes the annexe comfortable throughout the year, helping keep the interior warm in winter and cool in summer. SIP construction also allows for a faster, cleaner build process compared with many traditional methods.
If you are looking for a granny annexe in Hertfordshire, TRJ Construction can help with the full process from design and planning to construction and final handover.
Whether you need a one-bedroom annexe, two-bedroom annexe, accessible living space or a completely bespoke layout, we can design a building around your garden, your family and your long-term needs.
“TRJ Construction helped us create a beautiful annexe that feels like a proper home. The layout works perfectly for our family, the finish is excellent, and the building is warm, bright and comfortable. We are very happy with the result and would happily recommend TRJ to anyone planning a granny annexe.”
Planning a Granny Annexe in Hertfordshire?
FAQs
Can you build a granny annexe like Willow Court in Hertfordshire?
Yes. TRJ Construction designs and builds bespoke granny annexes across Hertfordshire and surrounding areas. Each annexe can be adapted to suit your garden, layout requirements, access, budget and preferred finish.
Is this annexe suitable for independent living?
Yes. Willow Court was designed as a self-contained living space with bedrooms, bathroom, kitchen, living area and private entrance. This makes it suitable for independent family living.
Can the layout be changed?
Yes. The layout can be changed to suit your needs. You can choose one bedroom, two bedrooms, a larger living area, an office, accessibility features or extra storage.
Do granny annexes need planning permission?
Planning requirements depend on the size, location and intended use of the annexe. TRJ Construction can help with drawings, planning guidance and building control requirements.
What is the benefit of SIP panel construction?
SIP panels provide excellent insulation, strong structural performance and fast installation. They help create a comfortable, energy-efficient building suitable for year-round use.
Can TRJ Construction complete the interior as well?
Yes. TRJ Construction offers a turnkey service including structure, exterior finish, electrics, plumbing, kitchen, bathroom, flooring, decorating and final handover.
