About us.

Tilsley Engineering is a civil, geotechnical & structural consulting company that has worked across Auckland and the Waikato for more than 50 years. We're known for finding better and more cost effective solutions to our clients' problems.

We provide a one-stop shop for all of your residential engineering requirements. Our specialty is engineering design and support for residential developers, particularly foundation and pod-flooring. We also undertake many other structural design elements in buildings as well as one-off jobs for rural and residential buildings, compliance for Council consents, bridges and the design of waste-water and stormwater systems.

Tilsley Engineering is a locally owned professional engineering company that delivers solutions to clients from Auckland to the Waikato. Our senior director, Bob Tilsley, is one of the most experienced practicing engineers in New Zealand. His team of engineers are practical, diverse and experienced.

Tilsley Engineering is a one-stop shop for all of your residential engineering requirements. Our specialty is engineering design and support for major residential developers, particularly foundation and pod-flooring. We also take on many other structural elements in buildings as well as one-off jobs for home owners, water bores for farmers, compliance, bridges, roading and waste-water systems.

Our office is in the heart of Pukekohe. You won’t find all the glass and chrome that our competitors have and we don’t wear flash suits or drive around in shiny new vehicles. This is reflected in our pricing which is among the most competitive in the market. We believe our customers appreciate that.

Man with herd of cows

Susan Tilsley

Director, Senior Engineering Geologist

Qualifications/Licences: BSc, MSc (Hons), MEngNZ

Susan Tilsley is an engineering geologist with 30 years of experience specialising in geotechnical investigations, earthworks slope instability and landslide assessments – primarily for the design of infrastructure projects.

Susan started work with Geotest Ltd, an engineering soils laboratory in 1993, becoming a lab manager and a TELARC signatory in 1995. She continued working with the Beca Group of companies, becoming an associate (shareholder) in 2010. Between 2013 and 2022 she held the role of Technical Director at Beca Ltd. Her focus in later times was on the technical development of engineering geologists and the improvement of their digital tools.

Susan has worked on projects around New Zealand as well as abroad in South-East Asia and the Pacific. In July 2022 Susan started working with Tilsley Engineering Ltd and Tonkin + Taylor Ltd, both on a part-time basis to enable more time to enjoy other aspects of life.

She is also on the NZ Geotechnical Society committee to update the NZ geotechnical soil and rock field guidelines and has been involved in setting up a country-wide GIS-based slope instability depository.


Dougal Tilsley

Director, General Manager

 Dougal is the day-to-day manager sharing his time between the Pukekohe and Te Aroha offices. He is often out on site, supervising construction contractors and trouble-shooting any problems as they arise. He has a wealth of practical knowledge and a can-do attitude to get results.

When he is not fighting fires on site, Dougal spends his spare time volunteering for the Onewhero Fire Brigade, plus farming when he has to. 


Meet the Team Leaders.

Bob Tilsley

Principal Engineer

Qualifications/Licences: MNZM, BE Civil, CPEng, MIPENZ

Robert (Bob) Tilsley is a Chartered Professional Engineer with 60 years of experience. He started work at the engineering services department of the Auckland City Council in 1962.

Since that time he has held roles in local government as Assistant County Engineer, Borough Engineer, Chief Executive and an elected member of the Auckland Regional Council. He was an inaugural Board Member of Watercare and has worked in New Zealand and Canada consultancies. He has consulted in the Solomon Islands and New Ireland.

Bob was awarded the MNZM in 2006 for Services to the Community.


Ali Gholamhoseini

Lead Structural Engineer

Qualifications/Licences: BSc, MSc, PhD, FIEAust, CMEngNZ, CPEng(Aus.), CPEng(NZ), IntPE(Aus), IntPE(NZ), APEC Engineer

Industry Awards: Australian Postgraduate Award/Industry (APAI) Scholarship (2010-2014) UNSW, Sydney, Australia

Originally from Iran, Ali completed his BSc in Civil Engineering and MSc in Structural Engineering in 1996 and 1999. He worked in Iran for 10 years before going to Nigeria to work for a German company.

In 2010 Ali moved to Australia to study for his PhD at UNSW. In 2014 he moved to the University of Canterbury for his Post Doc. He has been working on numerous residential, commercial and industrial projects in the Auckland region since 2016. At Tilsley Engineering, Ali enjoys working on a diverse variety of projects on a day-to-day basis.


Pokeno subdivision

Our Approach.

Local knowledge: Our local, experienced team contribute valuable experience and insight

Practical, cost-effective solutions: We offer transparent, affordable services to suit a range of projects. We aim to provide a fixed quote so you know the price of our involvement from the start.

Customer care: We are committed to customer satisfaction and are proud to have the support of a number of loyal clients.

In need of quality civil engineering services?
Talk to our team today.

(09) 238 3245 info@teng.co.nz