Inge Oosthuizen
Associate Director
Qualifications/Accreditations:
- MEng Engineering Science
- Certified Passive House Designer
Inge Oosthuizen is an experienced sustainability and building services professional with a strong track record in low-carbon design and environmental analysis across the built environment. With over a decade of industry experience, she has developed deep expertise spanning building services engineering, energy modelling, and sustainability consultancy. Her career includes key roles at Scotch Partners, where she progressed from Building Services Engineer to Lead Energy Consultant, and at Hoare Lea, where she operated at Senior Associate level, contributing to the delivery of complex, high-performing building projects.
Inge’s work is characterised by a rigorous, analytical approach to building performance, combining technical design knowledge with advanced modelling and a clear understanding of how buildings operate in practice. She has extensive experience advising on strategies to reduce both operational and embodied carbon, supporting clients in delivering sustainable, future-ready developments. Known for her collaborative approach and sound engineering judgement, she works closely with multidisciplinary teams to translate sustainability objectives into practical, deliverable solutions aligned with both environmental and commercial priorities.
As Associate Director and Building Physics Lead at Delta Green Environmental Design, Inge is responsible for leading the delivery of building performance analysis across the practice. She oversees the development and application of advanced modelling techniques, ensuring that design decisions are informed by robust data and evidence. Inge plays a key role in shaping project strategies, guiding teams and clients towards optimised, high-performing outcomes, and maintaining the highest standards of technical quality in the delivery of building physics and sustainability services.