UK Families Turning to Garden Annexes as Ageing Population and Care Costs Rise

With UK care home fees now exceeding £60,000 per year in many areas, more families are turning to garden annexes as a practical alternative for supporting ageing relatives at home. Weekly costs of over £1,200 are prompting homeowners to seek solutions that offer both flexibility and long term value, with well built, self contained annexes often contributing an estimated 20% to 30% to overall property value.

Nearly one in five people in the UK is now aged 65 or over, a proportion set to rise further in the coming decades. As life expectancy increases and care costs continue to climb, multigenerational living is becoming a more considered and forward planning choice. Reflecting this shift, internal website data from Green Retreats shows a 60% increase in traffic to annexe related pages over the past 12 months.

The Nest | Size: 10m x 4m | Price: £113,220

A Comparable Investment With Lasting Value

Annexe buildings by Green Retreats start from £63,765, broadly comparable to the cost of a single year of care in some regions. Unlike annual care fees, however, a garden annexe is a fully liveable space that is owned outright.

It can be customised to meet elderly accessibility needs, from level access thresholds to adapted bathrooms, while remaining a permanent addition to the property. In many cases, it may also enhance overall property value, offering families both practical and financial reassurance.

Designed for Independent Living

Modern garden annexes are constructed for year round residential use, incorporating high performance insulation, heating systems, kitchen and bathroom facilities, and independent access. Many designs follow established planning routes or comply with Caravan Act legislation, providing a clear and compliant pathway to additional living accommodation.

Natasha McCulloch, Sales Manager at Green Retreats, commented: “Families are planning further ahead than ever before. With care costs rising and the population ageing, we are seeing sustained demand for annex buildings that balance independence with proximity. A well designed garden annexe allows families to remain connected while protecting privacy and dignity.”

The Nest | Size: 10m x 4m | Price: £113,220

Planning for the Future

As families weigh up rising care costs against long term housing decisions, garden annexes are increasingly being considered as part of a structured, forward thinking plan.

By creating independent living accommodation within their existing property, homeowners can retain control, support loved ones more closely, and invest in an asset that continues to serve the family over time.

For families beginning to explore their options, Green Retreats offers informal consultations to discuss design, planning routes and individual requirements.