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Dunster House review
Prices, ranges, what's included, reviews and current deals.
Dunster House sells garden rooms, insulated garden offices and log cabins as DIY kits. It doesn't offer an installation service.12 The insulated offices we saw started at about £4,286, kit only, so budget separately for a base, electrics and someone to build it.31 It scores 4.3 out of 5 from 23,835 Trustpilot reviews.4
At a glance
| What they make | Log cabins, timber and composite garden offices, and the Addroom insulated panel range, all as kits.1 |
|---|---|
| Prices | Insulated garden offices on the first listing page ran from about £4,286 to £10,880; Addroom from about £5,690 to £8,820.35 |
| Delivery | Mainland England, Wales and most of Scotland, with exceptions for some postcodes, including parts of Cornwall, Devon, Wales and Scotland.6 |
| Show sites | None. The website lists its Bedford factory and distribution centres.7 |
| Guarantee | 10 years, with conditions.12 |
| Finance | Yes, through Black Horse FlexPay.8 |
| Company | Dunster House Limited, registered in 1994, Bedford.9 |
Kit only: what you'll pay for on top
Dunster House prices are for the kit. The base, electrics and installation aren't included, and on some models floor insulation is an optional extra.1 Its terms say delivery teams can't give installation advice and refer to customers using third-party installers.2
So the real cost is the kit plus:
- a base (see our foundations guide)
- a registered electrician to run power from the house
- your own time, or a builder, to put it up
Our kit or installed guide works through whether the savings add up.
Insulation
The insulated office page says insulation is offered "on a select range", and the listings filter by wall thickness: 62mm, 83mm, 87mm and 202mm.3 The Addroom range has walls and roof of about 140mm and a floor of about 40mm, with uPVC double glazing.5 Check the build-up of the exact model before you buy. A thin log wall won't keep a room warm in winter the way an insulated frame will.
Delivery and payment
Delivery is kerbside, within 20m of the vehicle, on weekdays, and someone must be in. Unloading can take up to two hours.6 Online orders need a 25% deposit, and the balance is due 3 working days before delivery.12
Guarantee
Most products show a "10 Year guarantee*". An unsuitable base, poor maintenance or changes to the building can void it, so read the conditions for your model.12
Reviews
On Trustpilot, Dunster House scores 4.3 out of 5 from 23,835 reviews, on a claimed profile.4
A Trustpilot score is a useful signal, not a verdict. Read the newest one and two-star reviews and see how the company replied, because that shows you what happens when something goes wrong.
Current Dunster House deals
Deals from Dunster House we found on its own website on our last check, biggest savings first. We check every week.
Deals checked on the companies' own websites on 22 Oct 2026. Prices and availability change, so confirm with the company before you buy.
Watching the budget? Join the free deals list for ex-display rooms, discounted new rooms and spare installation slots near you.
Join the deals listWho Dunster House suits
Worth a look if:
- You're handy, or have a builder, and want the lowest price for the building itself.
- You want lots of choice: there are hundreds of sizes and models.
Check carefully if:
- The kit price is only part of the cost.
- There's no installation service and no show site.
- Some postcodes, including parts of Devon, Cornwall, Wales and Scotland, are delivery exceptions. Check yours before ordering.
Questions to ask Dunster House before you order
- What are the wall, roof and floor insulation thicknesses of this model?
- What base does the guarantee require?
- Is my postcode in the delivery area, and when is delivery?
- Is the room within the planning rules for my garden? Our free planning report checks your postcode for protected land.
Compare Dunster House with other companies in our garden room companies comparison, or get quotes from companies that cover your area.
How we wrote this: facts come from Dunster House's own website, Trustpilot and Companies House, checked on 22 Oct 2026. We haven't bought or inspected one of its rooms. Prices and offers change, so confirm them with the company. Garden Room Life is independent. No company pays to appear on this page, and we have no referral arrangement with Dunster House.
Questions people ask
How much is a Dunster House insulated garden office?
On our check, the first page of insulated offices ran from about £4,286 to £10,880, kit only. The base, electrics and installation are extra.31
Is Dunster House any good?
It scores 4.3 out of 5 from 23,835 Trustpilot reviews.4 We haven't built one ourselves. As with any kit, check the insulation and base requirements of the exact model.
Related guides
Kit or installed?What a kit really costs once it's built.
Garden room dealsEx-display and sale rooms, checked weekly.
Sources
- Dunster House, Garden rooms. Checked 22 Oct 2026.
- Dunster House, Terms and conditions. Checked 22 Oct 2026.
- Dunster House, Insulated garden offices. Checked 22 Oct 2026.
- Trustpilot, Dunster House reviews. Checked 22 Oct 2026.
- Dunster House, Addroom garden rooms. Checked 22 Oct 2026.
- Dunster House, Delivery. Checked 22 Oct 2026.
- Dunster House, Where are we. Checked 22 Oct 2026.
- Dunster House, Home page. Checked 22 Oct 2026.
- Companies House, Dunster House Limited, company number 02913901. Checked 22 Oct 2026.