HanEng project
Brownfield Subdivision
Civil engineering for a three-lot residential infill development on a sloping site — shared accessway, stormwater and wastewater networks — approved by Auckland Council.
- Sector
- Residential Infill Development
- Location
- Auckland
- Year
- 2026
- Status
- Engineering Plan Approval granted
- Scope
- Common accessway and permeable paving
- Stormwater reticulation and on-lot detention tanks
- Wastewater manholes, connections and private pump station
- Engineering Plan Approval (EPA)
A three-lot residential development on a sloping suburban site in Auckland.
HanEng prepared the civil engineering design for the shared accessway serving all three lots. The accessway climbs the site at grades that were refined lot-by-lot to set achievable finished floor levels, with a permeable paver section to manage stormwater at source and a concrete channel to direct runoff.
Beneath the accessway, a 150 mm stormwater line collects flows from each lot’s detention and retention tank before discharging to the public network in the street. New wastewater manholes and lot connections — including a private pump station for the lowest lot — tie the development into the existing network, with clearances reviewed by Watercare.
The Engineering Plan Approval was granted by Auckland Council in August 2026.