Garden & Granny Annexe Rental
Straight 20×8 annexe to rent.
20ft × 8ft
A complete self-contained home — bedroom, kitchen and bathroom. £795/month, £5,995 installation, 24-month minimum. No planning permission under the Caravan Act.
- 25 Year
- Guarantee
- Free
- UK Delivery
- Zero
- Maintenance
Annexe Rental
A Straight 20×8 annexe — independence without the capital cost
A complete self-contained dwelling: double bedroom, fully fitted kitchen, full bathroom. Insulated for year-round living and finished in the same zero-maintenance cladding as the annexes we sell. Air conditioning, blinds, lighting and commercial-grade flooring are all included as standard.
Supplied to comply with Section 13(2) of the Caravan Sites Act 1968 — for a family member, in a correctly positioned annexe, no planning application is needed. When the need passes, we collect it for free, or you can switch to ownership.
Monthly rental
£795/mo
Equivalent to £183.46/week
- Reservation deposit
- £1,000
- Planning permission
- Not required
£1,000 deposit secures your installation date
What's included as standard
Every Straight 20×8 annexe rental, fully fitted
- ✓ Double bedroom, fitted kitchen and full bathroom
- ✓ Air conditioning (heat & cool) included
- ✓ A-rated double glazing, full insulation, year-round living
- ✓ Commercial-grade flooring throughout
- ✓ Blinds and interior lighting fitted
- ✓ Groundworks up to 20 metres
- ✓ Electric supply and certification up to 40 metres
- ✓ 25-year structural guarantee
Every annexe includes a fitted kitchen as standard — see the full kitchen walkthrough →
Prefer to own this size?
Straight 20×8 from £51,983 inc. VAT, delivery & installation
Optional extras
What's already in the price — and what isn't
Every annexe price already includes air conditioning, fitted kitchen, full bathroom, blinds, interior lighting, commercial-grade flooring, groundworks up to 20 metres, and electric supply & certification up to 40 metres.
Quoted at site survey
- + Groundworks beyond the included 20 metres
- + Electrical or mains run beyond the included 40 metres
- + Decking, flyover roof and skirting upgrades
- + Sloped-site adaptations and restricted-access installs
- + White goods (fridge, microwave, etc.) and furniture
And, like every Booths building
A zero-maintenance exterior
Built from steel and UPVC — no external timber. It never needs painting or staining, so you are never left maintaining a building, and it keeps its just-installed look for the full 25 years.
The UK’s only 25-year guarantee
A 25-year structural guarantee on the building itself — not a one or two-year warranty. It is built, and warranted, to be used for decades rather than treated as a temporary garden room.
Portable — and still an asset
Every building is 100% portable. If your circumstances change it can be lifted out and relocated, or sold on, so it stays a resaleable asset rather than money sunk irreversibly into the house.
Customer Stories
Garden annexes in the wild
Annexe rental & planning questions
Can I attach my annexe to my house?
No — annexes cannot attach to existing properties, but can be positioned within about 2 inches of the home or garage.
How do I buy a garden annexe?
A £1,000 deposit reserves your installation date; you pay nothing more until the groundworks team arrives. Designers email floor plans and conduct a site visit to finalise the design, which must be confirmed 15 working days before installation.
What height is my garden annexe?
All annexes are 2,500mm tall, which falls within permitted development for garden structures.
What is included in the annexe price?
Groundworks (up to 20m), electrical connections, air-conditioning heating/ cooling, flooring, blinds and exterior lights — plus the 25-year guarantee.
Is my garden annexe insulated?
Yes — 90mm Ecotherm flooring and 90mm Actis wall/ceiling insulation. As an annexe faces weather on six sides, robust insulation is essential.
Listed building or AONB — can I still have an annexe?
Contact your council and emphasise the low carbon output — some planners have approved installations. Material samples are available on request.
Will I need planning permission for my annexe?
Annexes for a family member comply with the Caravan Act and qualify as permitted development, avoiding planning permission. See the Planning Permission page for the full conditions.
What are your most popular annexe sizes?
The Squire (16'x17'), Rockingham (20'x17') and Lincoln L-shape (24'x8' / 12'x8'). For smaller gardens, 20'x8' or 24'x8' with kitchen and bathroom are favoured.
Rent the Straight 20×8 annexe
Tell us your situation and postcode — we'll do our best to confirm installation slots and Caravan Act compliance.
Prefer to talk?
07746 665560Want to speak to someone straight away? We pride ourselves on quick, friendly replies — contact us now →