Frequently asked questions

A complete set of architectural drawings and specifications supplied as sold, supplied as PDF. Every package contains the same set of sheets: proposed floor plan, proposed roof plan, proposed elevations, foundation, ground floor and drainage plan, building sections, M&E / building services layout, standard construction details, and a building regulations and construction specification.

Drawings are supplied as sold and emailed after payment.

They are supplied as PDF and emailed to you.

Robert Seward BA(Hons) Arch. ACIAT, Senior Architectural Technologist.

No. Structural engineering design and calculations are not included in the standard drawing package. Where structural calculations or specialist structural design are required, these must be provided by a suitably qualified Structural Engineer. Structural engineering can be arranged separately at additional cost where required.

Start with your property. The configurator asks for your postcode, confirms your local planning authority, then asks a few questions about the house before showing you the packages and options that apply.

You can also browse the drawing packages directly, or read the Permitted Development guidance first.

Yes. You can configure and add more than one extension to the same order, and each one keeps its own configuration.

The options shown depend on the package and come from the product itself — typically the external material and the roof type. The configurator preselects the material based on what you told us about your house, and you can change it.

No. Permitted Development is a set of rights granted by legislation, not a decision by your council. The guidance on this site helps you understand the limits that apply, but it is your responsibility to confirm that your property benefits from the Permitted Development rights required for your project before purchasing and before building.

Where you need certainty, you can apply to your local planning authority for a Lawful Development Certificate.

England. The Permitted Development rights described on this site apply to houses in England. Different planning rules apply in Scotland, Wales and Northern Ireland.

Then it becomes a planning enquiry for YPDS Architectural Services, our parent practice, who can advise on a planning application.

Building Regulations are separate from planning. They can still apply even where planning permission is not required. Your package includes a building regulations and construction specification.