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Glass Buildings

Designing for the future

Sustainable Engineering


We are passionate about providing efficient low carbon building services designs and we understand in the early stages this is an iterative process and therefore we collaborate closely with our Clients and design team members and use the latest design and compliance software available to us. Our solutions are digitally engineered using Auto-desk Revit, IES for environmental compliance and Autodesk Navisworks Manage for BIM management and Consultancy services.


We offer bespoke design solutions, such as: 

  • Building Information Modelling

  • Mechanical & Public Health Design

  • Electrical Design

  • Condition Surveys and Dilapidation Reports

  • Renewable Technology Appraisals

  • Part L, Day-lighting and TM52 Compliance Assessments

  • Life Cycle Costing and Asset Reports

  • MEP Cost Planning

  • Pre Planning Services

  • Design Review and Auditing


Willowtree Design Associates embrace BIM and offer a fully collaborative service to assist projects in achieving their BIM aspirations. We provide 3D design services as a standalone service or as part of the project BIM aspirations in accordance with the BIM Execution Plan. 


Willowtree Design Associates Ltd is a building services consultancy based in Bourne Lincolnshire and Ely Cambridgeshire our chartered mechanical and electrical engineers have a passion for the built environment, whether this be initial concept design or detailed coordinated working drawings. We provide nationwide coverage from our offices and are fortunate to have worked in a variety of sectors which enables us to offer balanced theoretical and practical advice to our clients. We are a forward-thinking practice who embrace digital engineering and understand the importance of the software we use to inform building form and construction in the early stages of the design process. We would be delighted to discuss further how we could assist you in meeting your goals, please contact us to discuss your requirements further.

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