How much does a tiny house cost?

Thinking of putting a tiny house at the end of my parents land for a couple of years while I save. What's a realistic all in cost. And do we need planning permission? Assuming yes for that?

Asked by Everson on 5th Aug 2026
Expert Trade Answers
"So under some circumstances you can build without planning permission. It’s called PD permitted development, however there are rules you need to follow for this terms and conditions. Has to be under 50% of whole area of house, only 4 meters high, 2 meters away from neighbours etc.
you would be better of submitting planning for this to cover all issues.

Depending on size your looking at £85,000-£100,000 for a fully functional living space with all amenities connected and kitchen, bathroom fitted along with all electrics installed."
Answered on 5th Aug 2026 - Member since Mar 2024 - report
"A tiny house can vary in size, but most permanent brick-and-block micro homes are around 20–40m². As a guide, build costs are typically £2,500–£3,500 per m², so a completed tiny house generally costs between £60,000 and £120,000, depending on the size, specification and site conditions.

This would usually include the foundations, brick and block construction, roof, windows, internal finishes, kitchen, bathroom and standard plumbing and electrical installation. Costs can vary if additional groundworks or utility connections are required. First port of call would be to look into the planning side of things."
Answered on 5th Aug 2026 - Member since Feb 2022 - report
"Hi, it really depends on the size, specification and whether it’s built on-site or delivered as a prefab. As a rough guide, a fully finished tiny house usually costs between £40,000 and £90,000+, excluding groundworks and service connections. You’ll also need to budget for foundations, drainage, water, electricity and access if required.

If it’s intended as a separate dwelling, you will normally need planning permission, even if it’s on your parents’ land. Building Regulations may also apply depending on the design and use.

If you’d like, I can advise further if you can provide the approximate size and whether it’s for full-time living or temporary accommodation."
Answered on 7th Aug 2026 - Member since Oct 2021 - report
"Aside from the planning application fees, Architects and structural engineer costs etc...and legal solicitor cost...a small house can be built for £160,000 only if you organise job yourself and coordinate all the trades separately. That probably won't go to schedule always though!. Thank you."
Answered on 16th Aug 2026 - Member since May 2026 - report
"7m x6m with loft are around 50 K without materials 3-4 months of work
And you need planing permission of course"
Answered on 5th Aug 2026 - Member since Aug 2026 - report
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