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Thinking of extending your property?

John has successfully carried out planning work on well over 200 schemes over 20+ years most of which were extensions or alterations to existing buildings.

Concept 20 can provide a full planning application service which includes:

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A FREE first meeting

- To discuss your requirements & to inspect the site for feasibility of a scheme

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A FREE no obligation quotation

- To carry out the planning and building regulation drawings

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A fully measured building survey 

- To determine size, structure and services within the building

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Initial sketch design ideas

 - Based on our discussion & tweaks to the design to your requirements

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Production of planning drawings

- For submission to planning dept, see PLANNING APPLICATIONS

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Submitting of planning application

- All forms, letters and submission will be handled by Concept 20


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Residential extensions

- From small single storey extensions to large multi storey extensions 

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Commercial / Industrial extensions

- Extensions to shops, storage buildings, industrial workshops etc..

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Loft Conversions 

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Garage conversions

- For example, the conversion of a garage into habitable space

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Internal alterations

- Redesigning the internal layout of a building or adding a mezzanine

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Granny Annexes

- Extension or conversion of a building into a self contained flat for an elderly relative

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Splitting a dwelling into 2 dwellings

- Dividing a single property into 2 self contained dwellings


John has successfully carried out building regulation drawings and reports for well over 150 schemes most of which were extensions or alterations to existing buildings.

At Concept 20 we believe DETAIL IS KEY!

Our building regulation drawing packages cover every element of the proposals in full detail above and beyond the minimum requirement to gain building regulation approval & we charge no additional fee for this extra level of detail.

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Less queries from Building control as more aspects are covered with large scale drawings rather than notes

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A more accurate quote from builders. Less assumptions will need to be made due to the extra information. There is far less chance of being surprised by additional building fees for 'Something that wasn't in the quote'

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Much easier job for the Structural Engineer. I make sure to look at the structural design myself  & ask the structural engineer to justify my proposals, other architects usually leave all of the structural design to the engineer which costs you extra time and money.

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Less queries from builders on site as to how an element of the building is to be constructed due to a higher amount of large scale construction details.

Despite the additional detail, our fee's are no higher than what a typical Architect would charge for building regulation drawings.


Extension Plans

Amy Dall

2 storey side extension , Single storey rear extension, new loft conversion to detached property in Fareham

Work Undertaken:
Planning Appilcation & Building Regulation Application

I couldn’t have been happier with the service that was received by John. 

His attention to detail was unwavering and he listened to everything that was said.

He also offered really great advice when we were stuck for ideas. John ensured that the ideas we did have, were indeed viable through architecture and would be a suitable change for the planning department…we had grand ideas…and were in-keeping with our area.  

The quality and details of the drawing were so precise and intricate, we couldn’t have asked for anything more. 

Even when we changed our minds about a couple of things, John’s service stayed impeccable. I can highly recommend John on a personal and professional basis. I would not hesitate for a moment, to use his service again.

Southampton Architects

Kwok Wo Eddie Siu

Single storey extension to rear of property to create new living / dining area 
Retrospective planning application for new front porch

Work Undertaken:
2 x Planning Appilcations & Building Regulation Application

Thank you John for drawing the plans of our fantastic downstairs extension. John’s drawings were very accurate and designed to meet the needs of my family. He was very considerate and asked us the things we really wanted from this extension, gave us ideas of building ideas and meeting the requirements for planning. He also went above and beyond to help us find solutions to problems that other architects might have overlooked. Like the position of the water pipes and maximising the use of space in our home. When he was in our home measuring he was polite and courteous. The drawings are really stunning and the detail is really beautiful. We will be calling John again for our next extension plans on the garage. Thank you!

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