House Extension Plans & Architectural Drawings

Planning Permission & Building Control Approved

If you are planning to extend your home, professionally prepared house extension plans and drawings are essential. From planning permission drawings to building regulations plans, accurate architectural drawings ensure your extension is approved, priced correctly, and built without delays.

Architectural.Services provides online extension plans and drawings on a fixed-fee basis, serving homeowners across the UK and worldwide.

What Are House Extension Plans?

House extension plans are scaled architectural drawings that show how your proposed extension will be built and how it will integrate with your existing property.

They are required for:

Planning permission applications

Permitted development confirmation

Building regulations approval

Builder quotations

Construction on site

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Planning Drawings for House Extensions

Most councils require planning drawings for house extensions before validating an application.

Our planning drawing packages include:

Existing and proposed floor plans

Proposed elevations

Location plan

Block plan

These drawings are prepared in line with local authority planning standards, helping to avoid rejections or delays.

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Building Regulations Drawings for Extensions

Even if your extension does not require planning permission, building regulations drawings are still mandatory.

Our extension building regulations drawings include:

Construction details

Structural layout

Insulation and thermal performance

Compliance notes for building control

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Types of Extension Drawings We Produce

Single Storey Extension Plans

Rear extensions

Side extensions

Kitchen extensions

Double Storey Extension Plans

Two-storey side extensions

Rear double extensions

Wraparound Extension Plans

Side return and rear extension designs

Kitchen Extension Plans

Open-plan kitchen and dining layouts

All drawings are produced remotely, allowing faster delivery and lower costs.

Extension Plans Cost – Fixed Fee Online Service

Many homeowners search: “How much do extension drawings cost?”

Typical architect fees:

£2,000 – £5,000+

With Architectural.Services, you get:

Fixed-fee extension plans

No hourly charges

No site visits required

Clear pricing from the start

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Online Extension Plans – Designed Remotely

Architectural.Services specialises in online extension drawings, meaning you don’t need in-person meetings.

You can provide:

Estate agent floor plans

Existing drawings

Photos of your property

Basic measurements

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Why Choose Architectural.Services?

✔ Extension drawing specialists ✔ Planning & building regulations expertise ✔ Fixed-fee pricing ✔ Fast turnaround times ✔ Fully online service ✔ UK & worldwide coverage

We focus entirely on extension drawings, making us faster and more cost-effective than traditional architectural practices.

House Extension Drawing FAQs

What drawings do I need for a house extension?

You typically need planning drawings and building regulations drawings.

Do I need drawings if my extension is permitted development?

Yes. Building regulations drawings are still required.

Can extension plans be done online?

Yes. Architectural.Services delivers extension plans fully online.

How long do extension drawings take?

Most extension plans are completed within 7–14 days.

Get a Quote for Your Extension Plans

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