House Extension Architects in Strawberry-Hill, TW1

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 practice have dedicated teams. One team especially are experts 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 the best investments they have ever made for their home.

We’ve worked with customers across the South West in transforming their homes and their kitchens into the most desirable properties.

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.

We used APT for Architectual drawings to get our wishes past planning permission & control. APT carried out a full house remodelling project with us. They excavated a 1600 foot basement underneath the house. The brickwork was repointed around the whole building. We were frequntly presented with options where costs could be reduced by APT. Angus the contractor had great relations with kitchen, glazing & flooring suppliers. The builders were always cheery and full of spirit. Apart from the budget being 5k over budget, the build went well. - I would recommend APT for sure. Basement Conversion & House Remodelling
8.4 / 10