Description

Single Storey
Side Extension
Pre-designed. Supplied as sold.
Ready for your builder.
A complete set of professional drawings for a single storey side extension, supplied as a fixed, pre-designed set, ready to use for quotes or construction.
One pack. Two purposes. Get quotes. Build.
Choose your style
Select the external finish and roof style that suits your home. We’ll prepare your drawings to match.



Example render — choose your options
An illustrative render of the options you have chosen. Your drawings are supplied as a fixed, pre-designed set.
Add another package
Add as many as you need — they all go into one basket and one order.
What’s included in your drawing package
A complete set of architectural and technical drawings, drawn by our experienced team and supplied as a fixed, pre-designed set.

| C01 | Proposed Floor PlanGeneral Arrangement & Setting Out |
| C02 | Proposed Roof Plan |
| C03 | Proposed Elevations |
| C04 | Foundation, Ground Floor & Drainage Plan |
| C05 | Building Sections |
| C06 | M&E / Building Services Layout |
| SD01 – SDxx | Standard Construction Details |
| SPEC01 | Building Regulations & Construction Specification |
One pack.
Two purposes.
Get quotes. Build.
Get accurate quotes
Give the drawings to builders to get like-for-like quotes, so you can compare prices with confidence.
Build with confidence
The same drawings can be used for construction, with the technical detail your builder needs.

Permitted development guidance
Houses only — permitted development rights for these projects don’t apply to flats or maisonettes.
- The extension must not extend forward of the principal elevation, or a side elevation that fronts a highway.
- Side extensions are not permitted under Class A on Article 2(3) land.
- Other restrictions and conditions apply.
How it works
A simple 3-step process from your property details to fully prepared drawings.
1
Tell us about your property
Answer a few questions about your home and choose your preferred material and roof style.
2
We issue your drawings
Your complete pre-designed drawing set is prepared for issue in the combination you chose.
3
Use them to get quotes or build
Give the drawings to your builders for quotes, or use them for construction.
Prepared by YPDS
Our drawing sets are produced by our in-house team at YPDS, an experienced architectural technology practice, specialising in home extensions and permitted development across England.
Related guidance
Useful information to help you plan your single storey side extension.
Single Storey Side Extension GuideThe Permitted Development limits that apply, and what they mean for your drawings.Read the guide
The original dwellinghouseWhat counts as the original house, and why it affects how much you can build.Read the guide
Permitted Development guideThe full set of householder guidance, by project type.Read the guide Ready to see what you could build?
Answer a few questions about your property and we’ll prepare your professional drawing package.
- This package is for work that genuinely qualifies as Permitted Development. It is not planning permission and not a Lawful Development Certificate.
- Building Regulations and Building Control approval are separate and still apply where relevant.
- Structural engineering design and calculations are not included and must be provided separately by a qualified Structural Engineer where required.
- Standard extension packages are designed as bolt-on additions. They do not include removing structural walls or forming large structural openings in the existing house.
Full detail in our Terms, Cancellations & Refunds.
Not sure this package is right? Ask PERMITTED.








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