Sectors
From new homes and beachfront builds at Mangawhai Heads to subdivisions and lifestyle blocks inland, we help owners, builders and developers navigate ground conditions, coastal hazards and consenting. Whether you need a geotechnical report for a new dwelling, a wastewater system for an unserviced section, or coastal advice for a property near the dunes or estuary, we can help.
Mangawhai is one of Northland’s fastest-growing communities, and building here comes with distinctly coastal considerations — sandy and variable soils, dune systems, coastal hazards and on-site wastewater for properties beyond the reticulated network.
RS Eng brings the full range of engineering services to Mangawhai and the wider Kaipara coast: geotechnical investigation, foundation and structural design, coastal engineering, stormwater and on-site wastewater, all coordinated for Kaipara District Council and Northland Regional Council requirements.
Yes. RS Eng provides the full range of civil, structural, geotechnical, coastal, stormwater and wastewater engineering for Mangawhai and the surrounding Kaipara coast, working to Kaipara District Council and Northland Regional Council requirements.
Often, yes. Mangawhai’s coastal and variable soils mean councils commonly require a site-specific geotechnical investigation for new dwellings and subdivisions. We carry these out and produce consent-ready reports.
Yes. Many Mangawhai-area properties aren’t on a public sewer, so they need an on-site wastewater system designed to NZS 1547 or TP58. We design these to suit your soils, site size and the council rules.
Yes. For properties near the coast, dunes or estuary we provide coastal hazard assessments and protection design, accounting for erosion, inundation and sea-level rise.
Mangawhai is in the Kaipara District, so building and subdivision consents go to Kaipara District Council, while regional matters such as earthworks, stormwater and coastal discharges involve Northland Regional Council. We manage the engineering input to both.
New Dwelling Breamtail
Location: Breamtail Farms, Mangawhai, Kaipara District
Client: Private
Structural design and construction monitoring of an architecturally designed residential dwelling on a very coastally exposed site.
