Cost guide
How much does a Extension design cost?
Thinking about extending your home? It's exciting! Understanding the costs for extension design, from concept to planning, is a great first step. Typically, these design services in the UK range from £1200 to £4000. For this, you'll receive initial concepts, detailed drawings, and guidance through the planning application process, setting the stage for your dream extension.
Typical price
£1,200 to £4,000
What changes the price
Extension Size & Complexity
Larger or more intricate designs naturally require more design time and will cost a bit more.
Design Firm Experience
Highly experienced or well regarded architects may charge a premium for their expertise and reputation.
Detailed Design Work
If you need very specific or highly detailed drawings beyond basic planning requirements, the cost could increase.
Site Surveys Required
Sometimes, extra surveys like a topographical or tree survey are needed, adding to the overall design service cost.
Planning Application Support
Comprehensive support throughout the planning application can vary in cost depending on how involved your designer is.
Number of Revisions
While some revisions are often included, requesting many changes might lead to additional fees.
Prices by region
| Region | Low | Typical | High |
|---|---|---|---|
| London | £1,800 | £3,200 | £5,000 |
| South East | £1,600 | £2,900 | £4,500 |
| South West | £1,400 | £2,500 | £4,000 |
| East of England | £1,500 | £2,700 | £4,200 |
| Midlands | £1,300 | £2,300 | £3,800 |
| North West | £1,200 | £2,200 | £3,700 |
| North East and Yorkshire | £1,100 | £2,000 | £3,500 |
| Scotland and Wales | £1,200 | £2,100 | £3,600 |
Questions people ask
What's included in 'extension design'?
This usually covers initial consultations, conceptual drawings, detailed plans suitable for planning applications, and often help submitting your application. It’s all about getting your vision down on paper correctly.
Do I need an architect for this stage?
Not always an architect; experienced architectural designers or technologists can also provide excellent extension design services. Always choose a professional with a good track record and relevant expertise.
Are planning application fees included?
No, the fees charged by your local council for submitting a planning application are separate from your designer's costs. Your designer will advise you on these extra council charges.
Can I get quotes for my specific project?
Absolutely! On CertifySpace, you can quickly get free, no obligation quotes tailored to your exact extension design needs. This helps you compare options and find the right professional for you.
What happens after the design is approved?
Once your design has planning approval, you will likely need detailed technical drawings for building regulations approval and construction. This is a separate stage of design work.
How can I keep design costs down?
Being clear about your needs from the start, considering simpler designs, and comparing quotes from various professionals can help manage your budget effectively. Always discuss your budget openly with your designer.