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Loft Conversions

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Are you considering a Roof Extension?

You may have been thinking about adding a loft conversion for growing teenagers, or maybe to add a guest rooms, master bedroom, or even a study & cosy reading corner.

If so, you can save substantially on costs, compared with up-scaling to a larger house. Some of our clients want to use their new dormer loft conversion to create flat conversions or H.M.O.s.

Have you been wondering how much does aloft conversion cost? We have lots of experience with creating beautiful spaces through attic conversions. Our expert designers who do all the maths for you, and we can contract external technical services such as structural engineers at the Building Regulations stage.

Featured Case Study:
A Beautiful Butterfly Extension

We do many loft conversions. One particularly interesting example was where the client was not sure whether to do a loft conversion together with extension or a flat conversion. They opted for the latter option, and we created an infill on their butterfly roof. Our client had a large detached property by Wimbledon Common, which naturally falls under one of Merton’s Conservation Areas. Therefore it was less contentious for us to add space between the butterfly wings of their roof rather than via an extension.

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More Loft Conversion Projects


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Loft Conversion in Kingston

The brief was to enlarge the property via a double storey rear extension, loft conversion, internal re-figuration and a porch. In order to comply with the Council’s planning regulations our designers had to consider a sensitive approach to the existing fabric and form as well as the client requirements to preserve the appearance and the character of the residential architecture in the area.

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Loft Extension in Sutton

Extension Architecture was commissioned to produce all the architectural drawings for Loft conversion in Sutton Area of the terraced property. Plans were submitted and APPROVED by Sutton Council.

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Design Options
for your Loft Conversion

We can help you with architectural design ideas or indications for the cost of extension work. The planning team can advise whether a pitched roof to match the angle of the host building would be more likely to gain planning approval than a flat roof extension. Our design team will create architect drawings for both the Planning Department and for Building Control.

All Loft Conversion Case Studies

Your Application and PD

We will be happy to discuss with you whether your loft conversion planning permission will be a Permitted Development. Because of the pressure on housing stock, the government introduced Permitted Development guidelines to make it easier for families to extend to the rear, side or into their lofts. The current relaxed rules have been extended until May 2019, and will likely be further extended then (with modifications). In May 2019 there were some changes with the extended rules; for example with commercial applications.

Good Experience

Extension Architecture has 9 years’ experience of a very varied portfolio of planning submissions. We can easily create a great design for your loft conversion plans. Our team of planning consultants is a great feather in our cap and our USP. Many architects can give you a good design but if they are not familiar with the varying planning policies of all the boroughs in London, Greater London and the home counties, your chance of planning approval will be diminished.

Working Practice

Over the years we have built rapports with some of the planning officers (and conservation officers), and as a result they more often request minor alterations than recommend an application for refusal. Our knowledge of the various planning routes means that we have a very high approval rate with the first application. We know which routes to apply in the event of contention such as Green Belt, Conservation Areas or Listed Buildings. We have external report writers who can create supporting statements for you where needed.

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