The so-called “Granny annexes” have been really popular in home development in recent years. As it suggests, the name originates from adding living space to a home to allow an elderly relative (not just grannies!) to move in with the family. The potential benefits are high for everybody involved, as recent research shows that in the 65-74 age group, 13% of men and 35% of women live alone. A granny annex allows them to be closer to their loved ones, but still maintain some independence. They can spend more time with their grandchildren and benefit from seeing family more often, and the whole family often gains as grandparents can provide childcare support when needed. Actually, “Granny annexes” are also increasingly being used flexibly to house au pairs or live-in nannies which allows the family, the au pair or nanny greater independence than is usually feasible when they simply have a bedroom in the main house.


What your granny annexe will entail is obviously heavily dependent upon your budget and how much space you have to devote to it. Are you building an independent extension onto your home? Is it a separate building in the garden with the purpose of using it as a dwelling? One thing is certain – with due thought given to how it could be used flexibly for a different purpose by future owners, it should add at least 10% to the value of your property. Here at Greenway Associates we have over 23 years’ experience, and work hard to keep abreast with the best in design technology, approvals and planning policy. We can provide you with advice based on our wealth of experience in the field to help ensure your project’s success.

Whatever you are looking for, please get in touch with Greenway Associates for more advice or call us on +44 1737 652737.

Types of Granny Annexe

Granny Annexe:

A granny annexe is a self-contained living space designed to provide elderly family members with a sense of independence while remaining in close proximity to the main residence. These annexe typically feature a separate entrance, kitchen, bathroom, and living area. With a focus on accessibility and comfort, granny annexe offer a safe and convenient solution for multigenerational living. They serve as a warm and nurturing environment for seniors, fostering strong family bonds and easing caregiving responsibilities.

Garden Granny Annexe:

Nestled within the serene beauty of the garden, a garden granny annexe offers elderly relatives a tranquil living space while maintaining a connection with nature. These annexes are thoughtfully designed to blend seamlessly with the outdoor surroundings, creating a harmonious living experience. Surrounded by lush greenery and fresh air, seniors can enjoy a peaceful retreat and stay close to their loved ones, enriching family relationships and providing a nurturing environment for ageing gracefully.

Granny Annexe Lodges:

Granny annexe lodges evoke a sense of rustic charm and cosiness with their cabin-style design. These lodges are purpose-built living spaces that exude a warm and welcoming ambience, perfect for elderly family members seeking a comforting abode. Positioned in the garden or a secluded area on the property, these lodges offer seniors a private retreat while fostering a strong sense of togetherness with the family. Granny annexe lodges become a cherished space for creating lasting memories and embracing the joys of family life.

Log Cabin Granny Annexe:

Embodying a timeless appeal, the log cabin granny annexe brings the charm of natural logs into the living space. With their sturdy construction and earthy aesthetics, these annexes provide a sense of security and warmth. Log cabin granny annexe are ideal for elderly relatives seeking a homely retreat, surrounded by the soothing embrace of wood and the nostalgic beauty of a log cabin. They offer seniors a haven of comfort, where cherished memories are woven into the fabric of their golden years.

Wooden Granny Annexe:

Combining elegance and sustainability, wooden granny annexes are crafted with eco-friendly materials, offering a natural and inviting atmosphere. These annexe can be customized to complement various architectural styles, making them versatile and adaptable. The use of wood promotes a soothing environment, fostering a sense of tranquillity and well-being. Elderly family members residing in a wooden granny annexe enjoy a delightful blend of modern comforts and eco-conscious living, embracing a lifestyle that resonates with nature.

Luxury Granny Annexe:

A luxury granny annexe is a premium living space meticulously designed to provide elderly relatives with opulence and refinement. These annexes boast high-quality finishes, state-of-the-art amenities, and spacious layouts, elevating the living experience to the highest standard. Luxury granny annexes are a testament to the commitment to providing exceptional care and comfort to seniors. With a focus on sophistication and functionality, these annexe cater to the discerning tastes of elderly family members, creating an environment where luxury and love intertwine.

Mobile Granny Annexe:

The mobile granny annexe offers the flexibility of relocating the living space to different areas or even new locations, allowing for adaptability to changing needs. These annexes are thoughtfully designed with mobility in mind, making them a practical choice for families seeking a versatile solution. Seniors residing in a mobile granny annexe enjoy the freedom to explore new surroundings while still maintaining close ties with their families, creating an enriching experience that embraces change.

Modular Granny Annexe:

The modular granny annexe presents a cutting-edge approach to construction, featuring sections or modules that are assembled on-site. This method allows for efficient manufacturing and quicker installation, reducing construction time and minimizing disruption to the property. With a focus on practicality and cost-effectiveness, modular granny annexes offer a seamless integration of modern living in a fraction of the time, providing elderly family members with a comfortable and stylish living space that stands as a testament to contemporary innovation.

Prefabricated Granny Annexe:

Prefabricated granny annexe are meticulously constructed off-site in a factory-controlled environment, ensuring precision and quality. Once completed, the annexe is transported to the property and assembled with ease. This efficient approach to construction significantly reduces the time required for on-site building, providing a swift and smooth transition to the new living space. Prefabricated granny annexes offer seniors a comfortable and stress-free dwelling, where the fusion of meticulous craftsmanship and convenience culminate in a dwelling that feels like home from the moment they step inside.

Prefab Granny Annexe:

A shorthand term for “prefabricated granny annexe,” these annexes exemplify a streamlined and efficient approach to construction. Factory-made and delivered in pre-built sections, prefab granny annexe are assembled on-site with ease. The prefabrication process ensures that each component is precisely crafted, resulting in a swift installation and minimal disruption to the property. A prefab granny annexe embraces the spirit of modern living, where the fusion of convenience and thoughtful design culminates in a dwelling that warmly welcomes elderly family members into a space they can proudly call their own.


Each type of granny annexe offers a distinct blend of features and characteristics, making them suitable for various lifestyles and preferences. Homeowners can choose the type that best suits their needs, providing elderly family members with a loving and nurturing living space that fosters a strong sense of togetherness and care.

Granny Annexe Features and Characteristics

One Bedroom Granny Annexe:

A one bedroom granny annexe offers a compact and cozy living space, ideal for accommodating a single occupant. These annexes typically feature a well-designed layout that maximizes space and functionality. Perfect for seniors seeking a comfortable and manageable living environment, one bedroom granny annexes provide all the essential amenities within a practical and easily accessible footprint.

Narrow Granny Annexe Floor Plans:

Narrow granny annexe floor plans are specifically designed to fit into limited spaces or narrow plots. These floor plans optimize every inch of available space, ensuring that no area goes to waste. Despite their slim design, narrow granny annexe floor plans offer a comfortable and well-organized living space, providing seniors with a functional and thoughtfully crafted dwelling.

2 Bed Granny Annexe:

A 2 bed granny annexe offers the convenience of having two separate bedrooms, making it an excellent choice for accommodating more than one occupant. These annexes provide a shared living space while offering the privacy of individual bedrooms. Ideal for couples or seniors who desire a guest room, a 2 bed granny annexe ensures flexibility and versatility in multigenerational living arrangements.

Small Granny Annexe:

A small granny annexe is a compact and charming living space, thoughtfully designed to utilize every nook and cranny. These annexes focus on creating an intimate and homely atmosphere, perfect for seniors seeking a cozy retreat. Despite their smaller size, small granny annexes offer all the essential amenities and comfort, providing seniors with a delightful space to call their own.

Brick Granny Annexe Cost:

Brick granny annexes are known for their durability and timeless appeal. The cost of a brick granny annexe depends on various factors, such as the size, design, and chosen finishes. While brick annexes may require a higher initial investment, they offer long-term value and low maintenance, ensuring that seniors can enjoy a secure and aesthetically pleasing living space for years to come.

Contemporary Granny Annexe:

A contemporary granny annexe embraces modern architectural styles and design trends. These annexes feature sleek lines, open-concept layouts, and a seamless blend of indoor and outdoor living. Contemporary granny annexes offer seniors a fresh and stylish living environment, with an emphasis on functionality and aesthetic appeal. These annexes are perfect for those who appreciate modern living with a touch of elegance.

Garden Room Granny Annexe:

Garden room granny annexes combine the comfort of indoor living with the beauty of nature. These annexes are thoughtfully designed with large windows and glass doors, providing panoramic views of the garden and allowing ample natural light to fill the living space. Garden room granny annexes offer seniors a tranquil and scenic setting, creating a seamless connection between the indoors and the outdoors.

Minimum Size for Granny Annexe:

The minimum size for a granny annexe varies depending on local building regulations and planning permissions. Generally, granny annexes need to meet certain minimum dimensions to be considered habitable living spaces. These regulations ensure that annexes offer adequate space for comfortable living and adhere to safety standards. Homeowners must consult local authorities to determine the specific minimum size requirements for granny annexes in their area.

Insulated Granny Annexe:

An insulated granny annexe is designed to provide optimal thermal efficiency and comfort throughout the year. These annexes feature high-quality insulation materials, which help regulate indoor temperatures and reduce energy consumption. An insulated granny annexe ensures a cozy living space for seniors, keeping them warm during cold winters and cool during hot summers, promoting an environment that fosters well-being and energy efficiency.