Trusted advisors in development viability
For over two decades, we have been at the forefront of development viability and affordable housing consultancy, helping shape sustainable communities across the UK.
Our Story
Founded in 2001, Affintis LLP was established with a clear mission: to provide independent, expert advice on development viability and affordable housing matters.
Our founding partners recognised the growing complexity of planning policy and the need for specialist consultancy that could bridge the gap between developers, local authorities, and housing providers.
Today, we continue to uphold our founding principles while adapting to the evolving landscape of housing delivery. Our team combines deep technical expertise with practical commercial understanding to deliver solutions that work for all stakeholders.
Principles that guide our work
Integrity
We provide honest, independent advice that clients and authorities can trust. Our reputation is built on impartiality.
Collaboration
We work closely with all stakeholders to find solutions that balance commercial viability with policy objectives.
Expertise
Our team brings deep sector knowledge and stays at the forefront of policy developments and market trends.
Results
We focus on practical outcomes that enable projects to proceed while meeting affordable housing obligations.
Meet the experts
James Crawford
Managing Partner
25+ years experience in development viability. Former head of planning economics at a leading consultancy.
Sarah Mitchell
Partner
Specialist in affordable housing policy with extensive local authority advisory experience.
David Okonkwo
Associate Director
Expert witness in planning appeals with a track record of successful viability arguments.
Emma Thompson
Senior Consultant
RICS qualified valuer with expertise in residual land valuations and market analysis.