Whatever the scale of your project
Our broad range of experience and professionalism will ensure you're in safe hands.
Land development
Urban/Rural Subdivision
Resource Consent
Surveying
Infrastructure
Civil Design
Drone Services
Engineering and Construction Set out
About
Harrison & O'Sullivan Ltd is a Whanganui-based surveying and land development practice, providing experienced support across a wide range of projects from initial concept through to completion.
We work closely with our clients to understand their goals, project requirements, and the outcomes they want to achieve. Our personalised, client-focused approach has helped us build strong relationships and many long-standing partnerships over the years.
Clear and regular communication is central to the way we work, ensuring clients remain informed and confident at every stage. When specialist input is required, we coordinate with a trusted network of professionals to provide an efficient, well-managed approach.
What Our Clients Say
"Mike and his team were helpful, knowledgeable, gave great advice and were awesome to work with culminating in a great outcome and relatively simple sign off."
Jamie O'Leary
Sales Manager, Stonewood Homes Whanganui
"Emma is exceptional. On the day we were due to go unconditional, she dropped everything to confirm the property was subdividable and saved us from a major risk. Her communication was seamless, and even with my last-minute requests, she consistently went above and beyond. I wouldn't use anyone else."
Anonymous Client
Property Purchaser and Developer
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Team
We pride ourselves on helping landowners, developers and communities unlock the full potential of land through trusted surveying and planning expertise, exceptional service and efficient delivery.