Planning Application Architects in Southfields,

Our inhouse architects keep up to date in the latest changes in planning applications and building regulations in all of the West London Boroughs. Our chartered experts are here to provide friendly and helpful services assisting you from initial design ideas through to planning, building control and reality

Design and Build Company in London


An additional storey extension is a great way of getting a much larger, brighter, higher value house with a surprisingly modest amount of build work and minimal stress of having to move house.

Our South West London headquarters is located within close proximity to properties in Southfields.

Our tight area of operation helps maximise the clients budget by keeping materials, transportation, and labour to a minimum. Our in-house dedicated teams with decades of experience in managing double storey extensions, so we can help you from the start of the process to the very end.



Many of our clients have described APT's rear kitchen extensions as being one of the 'quick wins' when it comes down to the best investments they have ever made for their home.

We’ve worked with countless customers across the South West of London transforming their homes into the most desirable spaces they have ever imagined.

house renovation specialists


Many of our clients are surprised at how working closely with our architects on your project can help you find abundant space within the existing footprint of your house.

It is worth speaking to members of our design team who specialise on residential external / internal alterations for savings on build costs & investment opportunities.

Our early Edwardian semi detached house was extended and remodelled both internally & externally. The ground floor was extended out with a rear side return on the ground floor. My best feature are the industrial styled steel patio doors.

A bright & airy loft conversion was constructed in a hip to gable layout which gave us an extra room which was then used as a study.
The build took about 7 months from start to finish, which was a bit slower than our planned 6 months however completed to a exceptional finish. APT's quantity surveyor stuck to all estimated prices. Now the build is complete I can't wait to have guests round.
Mansard Loft Conversion, Extension & Full House Remodelling
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