One Bedroom Annexes

Sustainable and Cost-Effective Habitable 1 Bedroom Garden Annexes Beautifully Built with SIPs

1 Bedroom Annexes

Our range of one bedroom granny annexes includes four stylish models, all featuring glazing that allows natural light to fill the open-plan kitchen/living/dining room and a spacious ensuite bedroom with natural light.

The Hanley offers dual aspect open plan living space, with sliding doors and a floor to ceiling window that allows natural light in and a double bedroom with ensuite shower room.

The Ledbury features a spacious L-shaped design, with an ensuite double bedroom and a kitchen/living/dining room with floor to ceiling windows and sliding doors that allow natural light to flood into the rooms.

The Malvern has been designed to offer light-filled open plan living, with a dual aspect kitchen/living/dining room that extends out and a spacious double bedroom with ensuite shower room.

The Welland features a dual aspect, L-shaped living space at the front, with a floor to ceiling window and sliding doors, and a double bedroom with ensuite shower room to the rear.

Specification

Specification	Detail
Foundations	Concrete Pads or Ground Screws
Services	Installed up to 10m from Edge of Room (additional distance priced separately)
Main Construction	– 150mm Insulated SIP Panel Walls – 175mm Insulated SIP Panel Roof – Insulated Timber Framed Floor – Caberdeck Flooring Sheets – EPDM Rubber Roof Membrane
Windows & Doors	UPVC Double Glazed
Cladding	– 2 Sides Cedar Cladding / Render – 2 Sides Box Profile Metal Sheeting in Anthracite
Flooring	Vinyl Plank Flooring
Interior Finish	Plastered & Painted White
Internal Electrical Fittings	Standard White
Kitchen	– Howdens Greenwich Base & Wall Units with Handles – Laminate Worktop – Single Sink & Drainer
Kitchen Appliances	– Single Electric Fan Oven – Electric Four Ring Hob – Integrated Fridge – Extractor Hood
Bath / Shower Room	– Vanity Unit with Wash Basin & Toilet – Chrome Flush Handles – Stone Resin Shower Tray with Sliding Glass Shower Screen or Bath – Heated Towel Rail – Extractor Fan
Lighting	Internal & External Downlights
Heating & Water	Electric Underfloor Heating & 120 Litre Immersion Tank
Storage	Storage Cupboard
Safety	Smoke Detectors
Exterior	Decked Step to Entrance Door
Planning	Application for Certificate of Lawfulness
All Certification	- Building Regulations - Structural Calculations - U Values Calculation

Optional Extras

Wheelchair Access
Premium Glazing
Alternative Cladding or Render
Upgrades to Standard Specifications
Bifold Doors

Additional Site Related Costs

Planning Surveys
Additional Planning Reports
Groundworks beyond 10m from Building Edge
Preliminary Costs*
Optional Extras

*Expenses related to overnight stays for installation team

Download Price List

The Benefits of Building with SIPs

Faster Construction Speeds

The pre-manufactured nature of SIP panels offers a significantly reduced site installation time in comparison to traditional construction methods such as masonry or timber framing.

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Reduced Energy Costs

SIPs are very airtight in its construction and with less timber required than traditional timber frame construction, there is a vast reduction of cold bridges in the wall build up and less energy is needed to heat and cool rooms.

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Lower On-Site Costs

Due to the stringent, tried and tested design and manufacturing process, materials work harmoniously together, delivering a highly predictable and reliable product whilst minimising construction waste and labour costs.

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High Structural Performance

The composite construction of SIP panels offers enhanced structural performance, strength and stability that does not degrade in comparison to traditional construction methods.

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Lightweight Prefabricated Structure

SIPs construction is an incredibly strong, yet lightweight system. This minimises disruption on site, utilising low impact footings (where conditions permit), requiring less labour and allowing for easier handling.

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Our Service

We offer a complete service, which includes groundworks^, full structural calculations, Certificate of Lawfulness^^, installation and finishing, based on one of our four annexe models.

Throughout your project, every stage will be managed by our experienced team, from discussing your requirements and suitable annexe models through to manufacturing at our purpose-built facility and installation and finishing on site.

Attention to detail, professionalism and customer service are at the heart of every project we deliver and we’re proud of our reputation for designing, manufacturing and installing stunning annexes built with SIPs.

On every one of our projects our work is carried out in accordance with Health and Safety Executive guidance and regulations for construction. All four of our annexe models can be adapted for different needs and optional extras can be specified.

^Groundworks up to 10m from the edge of the building. Additional distance priced separately.

^^If surveys and/or additional reports are required, these will be charged for in addition to our standard service. Should you wish to increase the size of your annexe, this will be subject to applying for full planning permission, which we can assist with, and may incur additional costs.

Flat Pack Annexes

What’s Included in Our Annexes

Our dedicated in-house team offers a turnkey service, from planning to completion, and will take care of every stage of your project, ensuring that it’s delivered on time and on budget, to the highest of standards.

All of our prefab garden annexes include the following specification, as standard:

Certificate of Lawfulness^^
Concrete Pads or Ground Screws
Services Installed up to 10m from edge of Annexe^
Main Construction in SIPs
Cedar Cladding/Render to 2 Sides and 2 Sides Box Profile Metal Sheeting in Anthracite
UPVC Windows and Doors
SPC Flooring
Full Interior Decoration
One or Two Bedrooms
Bath/Shower Room
Kitchenette
Sockets and Switches
Electric Underfloor Heating
120 Litre Immersion Tank
Smoke Detectors
External Decking
Internal and External Downlights
All Certifications (Building Regulations, Structural Calculations and U Value Calculation)

^Groundworks up to 10m from the edge of the building. Additional distance priced separately.

1 Bedroom Annexe Prices

Size	Price	VAT*	Total Price
The Hanley 1 Bedroom Annexe (7.5m x 5m)	£106,840.00	£0.00 (0%)	£106,840.00
The Ledbury 1 Bedroom Annexe (8.5m x 5.5m)	£106,840.00	£0.00 (0%)	£106,840.00
The Malvern 1 Bedroom Annexe (8.5m x 5m)	£107,840.00	£0.00 (0%)	£107,840.00
The Welland 1 Bedroom Annexe (6.8m x 7m)	£115,840.00	£0.00 (0%)	£115,840.00

*Zero-rated for VAT as all of our annexe models comply with The Caravan Act and will receive a Certificate of Lawfulness. Should you wish to increase the size of your annexe, this will be subject to applying for full planning permission, which we can assist with, and may incur additional costs.

Download Price List

Our Annexe Models

The Hanley

The Hanley One Bedroom Annexe offers dual aspect open plan living space, with sliding doors and a floor to ceiling window that allows natural light in and a double bedroom with ensuite shower room.

The Ledbury

The Ledbury One Bedroom Annexe features an L-shaped design, with an ensuite double bedroom and spacious living space with floor to ceiling windows and sliding doors that allow natural light to flood in.

The Malvern

The Malvern One Bedroom Annexe has been designed to offer light-filled open plan living, with a dual aspect kitchen/living/dining room that extends out and a spacious double bedroom with ensuite shower room.

The Welland

The Welland One Bedroom Annexe features a dual aspect, L-shaped living space at the front, with a floor to ceiling window and sliding doors, and a double bedroom with ensuite shower room to the rear.

Our Group Products

Annexes for Home

Annexes for Work

Annexes for Leisure

Flat Pack Annexes

Modular School Buildings

DIY Garden Room Kits

Installed Garden Rooms

SIP Panels

Pods

Technical Information

Insulation

Our panels are constructed using enhanced grey EPS insulation. EPS is an inert material that will not off-gas or degrade over time, unlike PIR and PUR insulations, resulting in thermal performance that will remain consistent over the lifetime of the building. The enhanced grey EPS used in our panels is a closed cell structure and offers far superior thermal resistance values over standard EPS, with a water permeabilityof 0.015 to 0.030 mg(pa.h.m) and a thermal conductivity value of 0.032 W/mK

Structural Performance

Our wall and roof systems have been fully tested to British Standard and Eurocode loadings for domestic buildings. Each bespoke project will have a full structural design and structural appraisal from a third-party engineer, using the structural load testing data.

Standard Details and U Values

We have a range of standard details to assist and guide clients, architects and builders in the understanding and application of our SIPs wall and roof systems. Our thermal values are tailored towards ‘new thermal elements’ required for home extensions and ancillary building, including home annexes. U values are calculated on the complete wall or roof build up and these can be enhanced further with additional internal insulation, if required.

Information and Guidance

We have a range of technical data, installation guides and useful information on building with SIPs, to help guide clients, architects and builders.

Find out more

How to Order from Us

If you would like to find out more, discuss a project you’re planning or request a quote, please call us on 01452 501455 or email us at [email protected], where we are on hand to discuss your plans for creating the additional space you’re looking for.

Alternatively, please complete the form to the right and we’ll be in touch.

If you would like to visit us, please call us on 01452 501455 to book an appointment.

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Reviews

Really, really pleased with it

Really pleased with it all and enjoy sitting and taking in the view, glass of wine in hand of course! We did new decking immediately outside of it, in order to open the bi fold doors fully as an extension to the room. All in all, really, really pleased with it.

Such excellent service!

My wife and I just wanted to thank Richard, yourself and the rest of the team for all the support, ad hoc technical tips and advice that we got whilst building our Garden Room. I know that I visited the show room 2 or 3 times and Richard and the team, even though quite busy, showed us every courtesy and help. Such excellent service! I have finally completed the build of our 3 x 5m Garden Room, and we are very pleased with it.

The kit was fantastic!

Here are some pictures of my project I completed about 2 months ago, the kit was fantastic!

It’s such a good design!

We love the room and it was so easy to build. It’s such a good design!

It’s perfect and we love it!

We use it as a gym and use it most days, it’s perfect and we love it!

Great customer service and I’ll definitely be using you guys again.

Just wanted to email to thank you and your team. Great customer service and I’ll definitely be using you guys again. The driver was a really nice guy and very helpful. The build went really well and the customer was very happy.

I am very pleased with everything

I have completed the build of my DIY room that I purchased from you and I am very pleased with everything, looks really good.

Permitted Development, Planning Permission and Building Regulations Information

Permitted Development

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Building Regulations

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Planning Permission

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