Choosing between a garden annex vs care home depends on the level of care a relative needs, not just the cost. Financially, an annex is typically a one-time investment from £60,000 inc VAT, compared with ongoing care home fees of £45,000-£80,000 or more per year. For families where a relative has a degree of independence and wants to stay close to home, an annex can offer genuine value, both financially and in day-to-day family life. Where full-time professional medical care is needed, a care home remains the right setting. This guide looks at both sides honestly, so you can weigh up what matters most for your own family.
Is a garden annex cheaper than a care home?
For many families, cost is the question that starts the conversation, even if it is rarely the only thing that matters in the end.
Care home fees typically run to £45,000-£80,000 or more per year, and that is an ongoing cost for as long as care is needed. Over several years, that adds up to a significant sum, with nothing to show for it once care is no longer required.
A garden annex works differently. Annexes start from £60,000 inc VAT as a one-time cost, covering the full build, fixtures and finish across our range of annex sizes and layouts. We look at exactly what shapes that figure, including size, specification and site conditions, in our guide to garden annex costs.
Set side by side, a single annex build can compare favourably to a relatively short period of ongoing care home fees, and the annex remains part of the property afterwards rather than representing spend with no lasting asset. That said, this is a financial comparison, not the whole picture. The right choice depends just as much on the level of care and support a relative actually needs.
Garden annex vs care home: what does each actually offer?
Both options do genuinely different things well, and being honest about that difference is the most useful starting point.
A care home provides round-the-clock professional care, on-site medical support, and a structured environment designed specifically for residents with significant or complex care needs. For some families, that level of professional support is exactly what is needed, and no amount of proximity or family involvement can replace it.
A garden annex provides something different: independence, proximity, and the ability to remain part of daily family life while still having a genuinely self-contained space of one’s own. It works well for relatives who do not need full-time professional care, but who would benefit from being close to family, with support on hand when it is wanted rather than needed around the clock.
This is not a binary choice for every family. Some relatives will always need the level of care only a care home can provide. Others are far better suited to the independence an annex offers. The honest answer is that it depends entirely on the individual situation.
Who does a garden annex work best for?
A garden annex tends to work best for relatives who have a reasonable degree of independence, do not require constant professional medical supervision, and want to remain close to family rather than move into a residential setting.
For many of these families, changing mobility needs are still part of the picture, even where full-time care is not. That is exactly why accessible design matters from the outset. Features such as 850mm door widths, wet rooms and step-free access, covered in more detail in our guide to wheelchair accessible garden annex design, mean an annex can be designed to accommodate a relative’s needs both now and as they change over time, without needing to be adapted later.
For families across Sussex, Surrey, Kent and Hampshire, including in Guildford, Lewes and Tunbridge Wells, this combination of independence and accessible design is often exactly what makes an annex the right fit.
How does a garden annex support multigenerational living?
Beyond the financial and practical comparison, many families choose an annex for reasons that are harder to put a number on.
Proximity means being able to check in daily without it being a special occasion. It means grandchildren growing up alongside a grandparent rather than visiting on weekends. It means support is on hand for the everyday things, a shared meal, a helping hand, company, without a relative losing their independence or a family losing the ability to live their own lives too.
For many of the families we work with across the South East, including those in Winchester and Petersfield, this is often the deciding factor once the financial and practical picture has been considered.
Does a garden annex add value to a property?
Unlike ongoing care home fees, a garden annex adds to the value of the property it sits within.
Properties in the South East with an annex see an average premium of £167,500, a 21.4% uplift, according to eXp UK. Nationally, annexed properties typically see a 20-30% uplift, averaging around 25% (Sold.co.uk / Checkatrade), and homes with annexes tend to sell 25-40% faster than those without (Grannexe.co.uk).
This does not mean an annex should be thought of purely as an investment. But it is a meaningful difference from care home fees, which represent spend with no lasting return. An annex remains part of the property long after it has served its original purpose, whether that is continued use by the family or added value at the point of sale.
Garden annex vs care home: when might an annex not be right?
An annex is not a substitute for professional medical care where that level of support is genuinely needed.
If a relative requires round-the-clock nursing care, specialist medical supervision, or the kind of structured support that only a care home setting can provide, an annex will not meet that need, regardless of how well it is designed or how close it sits to the main house. Being honest about this matters. A garden annex works best when it is the right fit for the level of independence and support a relative genuinely has, not as a way to avoid a care home decision that is otherwise the right one.
If you’re still weighing up garden annex vs care home for your own family’s situation, our team is always happy to talk it through honestly before you get in touch. You can contact us directly, or read on for answers to some of the questions we hear most often.
Frequently Asked Questions
Often, yes, when compared over several years. Care home fees typically run to £45,000-£80,000 or more per year, while a garden annex is generally a one-time cost from £60,000 inc VAT. The right comparison depends on how long care is likely to be needed and the level of support required.
It can be, for relatives who have a degree of independence and do not need round-the-clock professional medical care. For those with more significant care needs, a care home remains the more appropriate setting.
Yes. Properties in the South East with an annex see an average premium of £167,500, a 21.4% uplift (eXp UK), and homes with annexes tend to sell faster than those without.
Yes. Features such as 850mm door widths, wet rooms and step-free access can be designed in from the outset, allowing an annex to accommodate changing needs over time.
In most cases, yes, since a self-contained annex used as living accommodation is generally different from permitted development. Our guide to planning permission for garden annexes explains the process in full, including how we can manage it on your behalf, or how to handle it yourself if you’d prefer to self-manage.
An annex is not designed to replace professional medical care. If a relative’s needs change significantly over time, a care home or professional in-home care may become the more suitable option, and that is worth considering honestly as part of any long-term plan.
Ready to talk it through?
Every family’s situation is different, and there is rarely a single right answer. If an annex feels like it could be the right fit for your family, we are happy to talk it through honestly, with no pressure and no obligation.
If you would like to see how other families across Sussex, Surrey, Kent and Hampshire have approached this decision, take a look at our customer stories.