Modernizing an Existing Extension

July 2011.


This project involved modernising an existing 1960's extension to the rear of a terraced house in Edinburgh. The existing extension was two stories tall, with a garage and a living room above. The extension had a slate pitched roof, which limited headroom in the upper floor. The garage had a very low ceiling and was only used for storage.


The new extension will raise the ceiling and turn the garage into a garden room with split level kitchen / dining room above. The building is clad using Trespa. The video shows an early feasibility study of the project, where the option of using timber cladding was exploredThe project took 15 weeks to build and was completed in May 2011

Construction Costs

The project cost £50,000 + VAT. This works out at £1,600 + VAT per square meter. This included altering one room in the existing house.


These costs were relevant when the project was completed in 2011. Prices have changed since this was built, see this post for more details of current construction costs.

Contractors and Consultants

BUILDER: S. Ewing and Sons Ltd.


STRUCTURAL ENGINEERS: Wren and Bell

Architects Fees

For a similar project Capital A would charge the following fees;



Feasibly Study - £1,800


Planning Application - £1,500


Building Warrant Application - £2,200


Pre-Construction (Tender) - £1,500


Construction Stage - £3,600


Post-Construction (Snagging) - £300



See this page for more details on the stages of a project.


See this page for more details on Architects Fees.

Consultants Costs and Other Fees

Structural Engineers - £1,200 (aprox)


Energy Consultant - £100


Planning Application Fee to Local Council - £202


Building Warrant Application Fee to Local Council - £780


Book A Free Consultation With An Architect
Capital A offer a free, no obligation consultation if your property is in Edinburgh, The Lothians, Fife or Dundee and your construction budget is above £50k.
Our email and phone details are on the
Contact Page.
REGISTERED OFFICE: Capital A Architecture Ltd. 8 Cameron Drive, Falkland, Fife, KY15 7DL. Registered as a Company in Scotland. Company Number SC374502. 2018 All Rights Reserved
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