It's one of the first questions homeowners ask: will a garden room add value to my property? The short answer is yes — but how much depends on what you build and how well it's done.
What the Evidence Says
While there's no official UK data tracking garden room ROI, estate agents consistently report that:
- A quality garden room can add 5-15% to a property's value
- Garden offices are the most sought-after type post-pandemic
- Fully insulated, year-round buildings add significantly more than summer houses
- Poorly built or cheap structures can actually detract from value
Which Garden Rooms Add the Most Value?
Not all garden rooms are equal in the eyes of buyers. The highest-value additions are:
- Home offices: Remote and hybrid working is here to stay — a dedicated office is a major selling point
- Granny annexes: Multi-generational living is growing, and a self-contained annexe is highly desirable
- Garden rooms with plumbing: A shower room or WC makes the space far more versatile
- Gyms and wellness spaces: The health and fitness trend shows no signs of slowing
What Detracts from Value
Some garden buildings can actually put buyers off:
- Cheap sheds disguised as garden rooms
- Poorly maintained timber structures
- Buildings that dominate the garden and reduce usable outdoor space
- Structures without proper electrics or insulation
- Anything that looks like it needs demolishing
Beyond Property Value: The Real Benefits
Most of our customers don't build a garden room to sell — they build it to live better. The real value comes from:
- Saving on commuting costs: A home office pays for itself over time
- Cancelling gym memberships: A garden gym saves £50-100+ per month
- Avoiding moving costs: Adding space is far cheaper than moving to a bigger house
- Rental income: An annexe can generate significant returns
Build Quality Matters
The biggest factor in whether your garden room adds value is build quality. A well-insulated, professionally built room with proper electrics and a quality finish will always be worth more than a flat-pack alternative. At LouMil, we build to a standard that enhances your property — both now and when you come to sell.
