Begin with an overview of the Dunster House Severn log cabin—highlighting its popularity, range of sizes, wall thicknesses, and common uses such as garden offices or studios, setting up the context for one transactional SEO term “Dunster House Severn log cabin build”.
Overview and Key Features
The Severn model is offered in sizes from around 5 m x 3 m up to larger footprints, with walls available in 28 mm, 34 mm, 45 mm, or 62 mm insulated options. It features interlocking tongue‑and‑groove slow‑grown spruce logs, pressure‑treated bearers, a 19 mm tongue‑and‑groove roof and floor, 24 mm double glazing with 4 mm toughened glass, and secure multi‑point locking on doors and windows for a robust structure.
Industry-leading specifications also include high walkthrough height, concealed hinges, full‑length floorboards, and adjustable storm braces. All these features have become hallmarks of the Severn build, delivering both visual appeal and structural integrity.
Benefits of Choosing Severn Log Cabin
Firstly, the interlocking tongue‑and‑groove logs and pressure‑treated floor bearers ensure long‑term durability. The cabin comes with a ten‑year guarantee on floor bearers.
Secondly, the 45 mm and 62 mm insulated wall options provide better thermal performance. With U‑values as low as 2.26 W/m² K (45 mm), the cabin is usable year‑round.
Thirdly, built‑in security—with multi‑point locking, concealed hinges, and solid glazing—makes Severn a secure space for home‑office use or storage.
Real-World Examples of Severn Builds
Severn build in Surrey (5 × 2.5 m)

Dunster House Severn Log cabin installation Whitstable Kent
Installed as a client’s chill‑out space in Shere, Surrey, the Severn came with black felt shingles and side stores. The installer praised the seamless logistics and speedy build.
Installation in Kent

Drainage Installation in Kent
A 5 × 3 m Severn unit was delivered and assembled in Whitstable, Kent. With felt shingles and insulation added, the cabin became a versatile garden office or relaxation zone.
Insulated Severn with uPVC windows

The largest insulated version (5 × 4 m with 62 mm walls) features uPVC double glazing and full insulation, making it ideal for use as a year‑round garden building.
Homeowners feedback
A customer who chose the 45 mm version reported that their builder called it the easiest cabin ever constructed. Delivery and communication also received praise.
Using as a home office
A Reddit user described using a 5 × 3 m insulated Severn as a home office with cat6 wiring and electrics installed inside. It proved functional and enjoyable year‑round.
Installation and Build Process
The Severn is designed for DIY assembly in about two days with two people. Pre‑assembled windows accelerate this. However, many reviewers advise treating it as a challenging build that requires careful layout and attention to detail.
Logs are untreated and may require wood preservative before assembly—allow time for drying and straightening warped pieces. A rubber mallet helps with assembly of tongue‑and‑groove sections. Ensure cabin is square and walls level before adding roof logs.
Use Cases: Problems Solved & Why People Choose Severn
- Home office or studio: Great insulation, generous space, secure glazing, and ability to run electricity and data.
- Garden retreat or gym: Extra insulated option keeps temperature consistent, and high roof height allows full use.
- Secure storage or workshop: Multi‑point locks and solid construction reduce risk of break‑in.
- For properties without planning permission constraints, Severn’s typical height stays under 2.5 m.
How to Buy & Where to Buy
You can buy the Severn cabin directly from Dunster House via their website. Sizes and wall thickness options are listed, along with price pricing starts around £3,874 for a 4 × 4 m 45 mm version, going up depending on insulation and uPVC upgrades.
Delivery is usually free across UK; lead times vary (1–15 working days for 34 mm, 3–4 weeks for 45 mm, 6–8 weeks for insulated). You can order accessories such as shingles, uPVC windows, or felt on the site. Use seasonal codes like SUMMER35 for discounts.
Buy Now:
Order Severn Log Cabin (34 mm or 45 mm)
Order Insulated Severn with uPVC windows
Final Thoughts
The Severn log cabin build combines attractive design with thick log construction, strong hardware, and security features. The capacity to choose insulated models tailored to year-round use makes it ideal for evolving needs like offices or studios. Be prepared to invest time in treating timber, following instructions carefully, and possibly modifying the roof or insulation further for local conditions.
FAQs
Q1: Do I need planning permission for a Severn cabin?
Generally not. Most Severn builds are under 2.5 m in height and designed to fall under permitted development rules. Always check local regulations. (Dunster House, Dunster House, Dunster House)
Q2: How well insulated is the Severn cabin?
The 45 mm version has a U‑value of ~2.26 W/m²K; the insulated 62 mm (Warmalog) version delivers better thermal performance and is suitable for year-round use. (Dunster House)
Q3: Is it easy to assemble myself?
While designed for DIY, many users report needing careful prep, warping correction, and two people. Instructions may lack detail in places. Consider hiring help if unsure. (Singletrack World)
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