O W A is an RIBA Chartered Practice, working on bespoke residential and cultural projects in the UK. With experience developing award-winning homes, medal winning gardens and a growing portfolio of published projects, we develop site-specific solutions in challenging conservation areas, greenfield sites and dense urban contexts.

As well as refurbishments and alterations to existing buildings, we are experienced in developing new-build developments and works to listed buildings.

With a decade of experience in design-led projects, O W A work from inception to completion on exceptional homes for clients in London and the South East.

O W A are shortlisted for the Architects' Journal Small Projects Award in 2017 for our collaboration with Kieran Wardle & Matthew Butcher on the Mansio, a temporary arts centre for Hexham Book Festival.


Owain Williams (Director)
BA (Hons, First Class) March (DIST, UCL) ARB

(+44) 07818 091007


Measured Surveys

Planning Applications

3D Visualisation

Feasibility Studies

Permitted Development and Lawful Developments

Construction Information

Building Regulations Applications

Contract Administration