Fully Installed Palmako Cecilia M Modern Log Cottage | 3-Room Annexe | Commercial Office | Guest House | 21.8m² | 70mm | 7.8x3.3m

Fully Installed Palmako Cecilia M Modern Log Cottage | 3-Room Annexe | Commercial Office | Guest House — Professionally Installed Across Mainland UK

The Palmako Cecilia M is the most open and glazed model in the Cecilia range. A sleek, three-room modern log cottage spanning 7.8m x 3.3m, with 21.8m² of internal floor space, 70mm solid Nordic spruce walls, and an extraordinary three aluminium sliding doors — all fitted with 24mm toughened energy glass — that open the entire front elevation of the building to the garden in a way that no other model in the range can match.

This is a building that blurs the boundary between inside and outside more completely than anything else we install. Slide all three doors open on a warm day and the Cecilia M becomes an extension of the garden itself. Close them against a winter evening and the 70mm log walls, energy glass coating, and 4-16-4 toughened double glazing keep the interior warm, quiet, and completely weathertight.

Whether you are looking for a premium garden annexe, a commercial office with a light-filled, open-plan feel, or a guest house that feels more like a boutique retreat than a garden cabin, the Cecilia M delivers on every level.

The price shown includes the full supply and professional installation of your Palmako Cecilia M anywhere on Mainland UK. This means everything: EPDM rubber roofing, foundation preparation and installation, full structural assembly, and timber treatment with Smart Seal applied to all external timber. There are no hidden costs, no separate groundworks quotes, and no surprises. What you see is what you pay.

Looking for more rooms or a larger footprint? Take a look at our Cecilia XXL (32m², 3 rooms) or the Cecilia XL (30m², 4 rooms) — or contact us to discuss the right model for your requirements.

Three Sliding Doors — The Most Open Building We Install

No other model in the Cecilia range has three sliding doors. On the Cecilia M, they run almost the full length of the front elevation — creating a wall of glass and aluminium that transforms the building from a cabin into something closer to a contemporary garden pavilion. The effect is dramatic, and it is entirely intentional.

Each sliding door is fitted with 24mm toughened double glazing (4-16-4 specification) with an energy glass coating that reflects heat back into the building in winter and reduces solar gain in summer. The aluminium frames are maintenance-free, weather-resistant, and lockable from both sides. The result is a building that is as practical and secure as it is visually striking.

The three-room layout gives the Cecilia M genuine internal flexibility — a main living or working space, a separate room for meetings, sleeping, or storage, and a third room for whatever your project requires. The 239cm wall height and 278cm overall height create a comfortable, professional interior throughout, and the 70mm Nordic spruce walls ensure the building performs as well thermally as it looks architecturally.

Every component is precision-engineered in Estonia from slow-growing Nordic spruce, and our experienced installation team handles the entire process from foundation preparation through to the final fixing, leaving you with a finished building that is ready to use from day one.

Key Features

• Three aluminium sliding doors — the defining feature of the Cecilia M, running almost the full length of the front elevation and creating an unrivalled connection between the interior and the garden or external space
• Three-room layout — 21.8m² of internal floor space across three separate rooms in a 7.8m x 3.3m footprint, providing genuine flexibility for living, working, and sleeping
• Aluminium-framed double-glazed windows and doors throughout — 24mm toughened double glazing (4-16-4 specification) with energy glass coating, providing outstanding thermal performance, sound insulation, and a contemporary finish
• 239cm wall height — full, professional standing height throughout, with a 278cm overall height giving the building a clean, low-profile contemporary silhouette
• 70mm solid Nordic spruce log walls — premium wall thickness providing exceptional thermal mass, superior insulation, and outstanding structural robustness
• Flat pent roof — a 46.7m² roof at 3° pitch with 19mm roof boards
• EPDM rubber roofing — included as standard — the flat pent roof requires a professional-grade waterproofing membrane. We install EPDM rubber roofing on every Cecilia M as part of the price. We will never use standard shed felt on any building we are responsible for.
• Foundation preparation and installation — included — we assess your site and install the most appropriate foundation as part of the price, whether that is ground screws, a concrete slab, or composite pads. No separate groundworks quote.
• Composite DPC strip, ground membrane, and anti-insect and rodent mesh — included as standard — we fit a composite damp-proof strip along the base of the foundation beneath all pressure-treated timber, lay a ground membrane beneath the building, and install anti-insect and rodent mesh as standard on every installation. These measures are not optional extras — they are part of how we build, because we want every building we install to last as long as possible.
• 28mm tongue-and-groove floor boards — substantially thicker than standard cabin flooring, on 45 x 70mm treated foundation joists
• Timber treatment with Smart Seal — included as standard — all external timber sealed as part of the installation, providing up to 10 years of protection against weathering, moisture, and UV damage. No additional treatment required after handover.

Product Specifications

What Is Included in the Price?

The price shown covers the complete supply and professional installation of your Palmako Cecilia M on Mainland UK. Everything is included — there is nothing left to arrange separately:

• Supply and delivery of your Palmako Cecilia M modern log cottage
• Foundation preparation and installation — included. We assess your site and install the most appropriate foundation as part of the price — whether that is ground screws, a concrete slab, or composite pads. There is no separate groundworks quote.
• Composite DPC strip — included as standard. We fit a composite damp-proof strip along the base of the foundation beneath all pressure-treated timber, providing an additional barrier against ground moisture and extending the life of the structure.
• Ground membrane — included as standard. A ground membrane is laid beneath the building on every installation to suppress weed growth and manage ground moisture.
• Anti-insect and rodent mesh — included as standard. We install mesh protection as standard on every build to prevent insect and rodent ingress beneath the floor structure — a detail that most installers do not include.
• Full structural assembly to Palmako’s manufacturer specification across all three rooms
• Installation of all three aluminium sliding doors, single doors, and windows
• EPDM rubber roofing — included as standard. The flat pent roof of the Cecilia M requires a professional-grade waterproofing solution, and we install EPDM rubber roofing on every one as part of the price. We will never use standard shed felt on any building we are responsible for.
• Timber treatment with Smart Seal clear timber sealant — included as standard. All external timber is sealed with Smart Seal as part of the installation, providing up to 10 years of protection against weathering, moisture, and UV damage. No additional treatment is required after handover.
• Site clean-up and handover

Island locations and certain remote areas of Scotland may be subject to additional logistics costs — please contact us prior to ordering if you are unsure whether your location is covered.

Bespoke Options

If you would like to customise your Cecilia M further — whether that is adding electrical lighting, heating, plumbing connections, insulation upgrades, or any other feature to enhance it as a commercial office, annexe, or guest house — we can accommodate this as part of the installation. Contact us to discuss your requirements before placing your order.

Interested? Let’s Talk.

Every project is different, and we are always happy to discuss your requirements before you commit. Whether you have questions about the Cecilia M as a garden annexe, commercial office, or guest house — or about foundation options, EPDM roofing, or installation timelines — our team is on hand to help. Contact us today and we will get back to you promptly.

Frequently Asked Questions

Do I need planning permission for the Palmako Cecilia M?

In most cases, no. The Cecilia M at 7.8m x 3.3m and 278cm overall height will fall within Permitted Development rights for most residential properties in England and Wales, provided it is used as an ancillary garden building and not as a primary dwelling. It must be sited within the curtilage of a dwelling house, not forward of the principal elevation, and must not cover more than 50% of the garden area. If your property is listed, in a conservation area, or in a National Park, different rules apply. We always recommend confirming with your local planning authority before ordering. We can provide a site plan and specification document to support any planning enquiry.

Does the price include everything — foundations, building, roofing, and timber treatment?

Yes, completely. The price shown includes foundation preparation and installation, full structural assembly of the Cecilia M, EPDM rubber roofing, and Smart Seal timber treatment applied to all external timber. There are no hidden costs and no separate groundworks quotes. What you see is what you pay.

What type of foundation does the Cecilia M need?

We assess each site individually and install the most appropriate foundation as part of the price. For most residential gardens, this will be ground screws or composite pads, which are quick to install, do not require concrete, and are fully reversible. Where ground conditions require it, we can install a concrete slab or concrete pad foundation. We will advise you on the best option for your specific site during the pre-installation survey.

What extra protection do you install at foundation level?

On every installation, we fit a composite damp-proof strip along the base of the foundation beneath all pressure-treated timber, providing an additional barrier against ground moisture rising into the floor structure. We lay a ground membrane beneath the entire building to manage moisture and suppress weed growth. And we install anti-insect and rodent mesh to prevent ingress beneath the floor — a detail that most garden building installers simply do not include. We do everything we possibly can to make every structure we install last as long as possible.

How long does installation take?

The Cecilia M is typically installed in two to three days, depending on site conditions and foundation type. We will confirm the installation schedule with you in advance and keep you updated throughout the process.

What is EPDM rubber roofing and why is it used on the Cecilia M?

EPDM (Ethylene Propylene Diene Monomer) is a synthetic rubber membrane used as a professional-grade waterproofing solution for flat and low-pitch roofs. The Cecilia M has a 3° pitch flat pent roof — too shallow for tiles or shingles to perform reliably — and EPDM is the correct and only appropriate finish for a roof of this specification. It is the same material used on commercial flat roofs and modern residential extensions, with a typical lifespan of 50+ years. We install EPDM on every Cecilia M as standard. We will never use standard shed felt on any building we are responsible for.

What is Smart Seal and how long does it last?

Smart Seal is a clear, penetrating timber sealant that we apply to all external timber as part of the installation. It provides up to 10 years of protection against weathering, moisture ingress, UV damage, and biological growth. No additional treatment is required after handover. After 10 years, a single re-application coat is all that is needed to maintain the protection.

Can the Cecilia M be used as a permanent annexe or commercial office?

The Cecilia M is extremely well suited to commercial office use — its three-room layout, full-height glazing, and professional interior make it one of the most compelling garden office buildings we install. For permanent residential occupation, planning permission would typically be required regardless of size, and the building would need to meet Building Regulations for habitable use. We can advise on insulation upgrades and connect you with the appropriate professionals. Please contact us to discuss your specific requirements.

Can I add electricity, heating, or plumbing to the Cecilia M?

Yes. We can accommodate electrical, heating, and plumbing installations as part of the build. These are arranged as bespoke additions to the standard installation package. Please contact us before placing your order to discuss your requirements and we will provide a tailored quote.

How long does delivery take after ordering?

Lead times vary depending on current demand and the time of year. Typically, we aim to have your Cecilia M installed within 6 to 12 weeks of order confirmation. We will confirm the expected timeline at the point of order and keep you updated throughout. Please contact us if you have a specific deadline in mind.

Do you install the Cecilia M across the whole of the UK?

We install across Mainland UK. Island locations and certain remote areas of Scotland may be subject to additional logistics costs — please contact us before ordering if you are unsure whether your location is covered.