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Mobile Homes in Gardens: Your UK Planning & Cost Guide

The idea of placing a mobile home in your garden is gaining popularity across the UK. Whether you need extra space for relatives, a home office, or a rental income stream, static caravans and modular units offer a flexible, affordable solution.

But before you proceed, you’ll need to navigate UK planning laws, costs, and installation logistics. In this guide, we answer all your key questions – helping you make an informed decision.

1. Avoid Costly Mistakes & Rejections

A garden mobile home typically refers to a static caravan, modular annexe, or prefabricated unit placed on your property. Unlike traditional extensions, these structures are:

  • Transportable(even if semi-permanent)
  • Versatile(can be used as a granny annexe, home office, or holiday let)
  • Cost-effectivecompared to brick-and-mortar builds

However, their legal status depends on how they’re used – which brings us to the crucial question…

2. Do You Need Planning Permission?

The answer depends on usage and location:

Permitted Without Planning Permission

If the mobile home is:

  • Ancillary to the main house (e.g., for a dependent relative, home office, or occasional guest use).
  • Not a separate dwelling (no independent living with its own kitchen/bathroom).
  • Within permitted development rules (not in a conservation area, AONB, or green belt).
Planning Permission Required If:
  • Used as a self-contained residence (e.g., rented out or lived in full-time).
  • In a conservation area, AONB, or green belt.
  • Too large or permanent (some councils treat long-term static caravans as new dwellings).

Unsure? ANX Space can help assess your project’s compliance.

3. How Much Does a Garden Mobile Home Cost?

  • Expense: Basic static caravan
    Estimated Cost: £10,000 – £20,000

  • Expense: Luxury/modular unit
    Estimated Cost: £30,000 – £60,000+

  • Expense: Delivery & installation
    Estimated Cost: £5,000 – £15,000

  • Expense: Utility connections (electric, water, sewage)
    Estimated Cost: £2,000 – £10,000

  • Expense: Council tax (if classified as separate dwelling)
    Estimated Cost: Varies by council

Cost-saving tip: A mobile home is far cheaper than a traditional extension (which can exceed £50,000).

4. Can You Live in It Full-Time?

Yes, but with conditions:

  • If used as a primary residence, you’ll need planning permission.
  • Granny annexes for dependent relatives are often allowed under permitted development.
  • Standalone living (e.g., renting to a tenant) usually requires council approval.

Warning: Unauthorised full-time occupancy risks enforcement action. Always check local rules first.

5. Key Benefits of a Garden Mobile Home

  • Affordable – Cheaper than extensions or buying a new property.
  • Quick installation – Ready in weeks, not months.
  • Flexible use – Home office, guest room, or rental income.
  • No stamp duty – Unlike buying a second home.

6. Potential Restrictions & Challenges

  • Conservation areas & AONBs – Stricter rules, often requiring permission.
  • Neighbour objections – Avoid blocking light or privacy.
  • Access issues – Ensure delivery trucks can reach your garden.
  • Utility connections – Mains hookups may need professional installation.

Pro tip: A planning consultant can help avoid costly mistakes.

7. Can You Rent It Out for Income?

Yes, but you’ll likely need planning permission.

  • Holiday lets (Airbnb) may require a change of use application.
  • Long-term rentals often need council approval as a separate dwelling.
  • Safety regulations (fire alarms, gas checks) apply.

Income potential: A well-located garden mobile home can generate £500 – £1,500/month as a holiday let.

8. How Are Utilities Connected?

Most mobile homes can link to your existing household utilities:

  • Electricity – Requires a qualified electrician.
  • Water & sewage – Connects to mains or uses a septic tank.
  • Internet – Can be extended from your home Wi-Fi.

Cost: Typically £2,000 – £10,000 depending on complexity.

9. Is a Mobile Home Right for You?

Good choice if you:
  • Need extra space affordably.
  • Want a quick solution (vs. long construction projects).
  • Plan to host family or earn rental income.
Think twice if:
  • Your property is in a conservation area or green belt.
  • You want a permanent dwelling without council approval.

10. Next Steps: Getting Started

  • Check permitted development rules with your local council.
  • Consult a planning expert if unsure (e.g., ANX Space).
  • Choose a reputable supplier for delivery & installation.
  • Apply for planning permission (if needed).