Try our instant design cost calculator

Please be aware that the instant quote provided here is based on the information you’ve given us, and it represents our lowest estimated cost for typical houses.

When you use the instant quote tool and provide your email and phone number, we will use this information to contact you for further discussion.

Following our conversation, we will provide you with a final quotation tailored to the specifics of your project and the area in which you are located.

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Please confirm your property type? *

• Detached
• Semi Detached
• Terrace
• Flat
• Bungalow
• Church
• Commercial
• School
• Warehouse
• Mosque
• Basement
• Other

And which bit do you want to extend? *

• Ground Floor
• First Floor
• Loft
• Other

Choose ground floor option: *

• Rear
• Side Fill
• Side n Fill
• Side
• Wraparound

Choose first floor option: *

• Rear Over Ground Floor
• Rear Over Outrigger
• Rear
• Side & Rear
• Side

Choose loft option: *

• Hip To Gable With Main Dormer
• Hip To Gable With No Dormer
• L Shaped Dormer
• Main Dormer
• Outrigger Dormer

Choose other option: *

• Garden Annex
• Garage Conversion
• Two Storey Side
• Two Story Rear

Total

£0.00

How many bedrooms does this property have? *

• 1
• 2
• 3
• 4
• 5+
• Not Sure

This will give us an idea of the property's size

When are you hoping to start the design process? *

• ASAP
• 3 Months
• 6 Months
• 12 Months
• 18 Months +
• I'm not sure

Are you interested in any of these services? *

• ⁠Architecture
• ⁠Engineering
• ⁠Party Wall
• ⁠Principal Designer
• ⁠Temporary works Co-ordinator, Supervisor, Designer
• ⁠Building Control Advisory
• ⁠Building Survey Report
• ⁠Project Management
• ⁠Construction Supervision
• Fire Engineering

Party Wall Fee

Price: £600.00

Contact Simple Build for a manual quote. Instant quotes are not available for this option.

How clear are you on the design you want?

• I need inspirational ideas and full creativity
• I have some ideas and need a little support
• I have the intent clarified, just need some expert guidance
• I have the design covered, just need this put on paper

A few details from you, please...

Full name *

First

Last

Layout

First line of project address *

Project postcode *

Layout

Email *

Phone *

T&C *

• I accept the terms and conditions *

Reveal my quick quote