Ecotectural are architectural home builders in Mapua and Ruby Bay, building warm, dry, low-running-cost coastal homes since 2006.
Home builders in Mapua and Ruby Bay
Mapua and Ruby Bay builders, warm coastal homes built to last by the water.
Mapua and Ruby Bay reward homes built for the coast: warm, dry, low-maintenance and at home by the water. We shape every design around the outlook, the salt air and the sun.
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Every home starts around one table and is delivered in the open, with every dollar visible as the build progresses.
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We are based minutes away in Upper Moutere, so this coastline's sites are second nature to us.
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The result is a warm, healthy home built for this coastline, not a generic one dropped onto the section.
Areas we serve near Mapua and Ruby Bay: Tasman, Upper Moutere, Motueka, Richmond and Nelson.
Building in Mapua and Ruby Bay
What building in Mapua and Ruby Bay actually involves.
Mapua and Ruby Bay sit on the coast and the estuary, a mix of serviced village sections and rural, lifestyle and waterfront blocks. Sea outlook, salt air and coastal wind all shape how a home should be built here.
Building consent goes through Tasman District Council, with village wastewater carried to the Bells Island scheme. Coastal and estuary sites bring salt-durable materials, wind and outlook into play, which we design for rather than discover later.
- On a typical Mapua or Ruby Bay site we help you plan:
- Water supply: village town supply where available; a tank or bore on rural and coastal blocks.
- Wastewater: the council scheme in the village, or an on-site system on unserviced sites.
- Consent: your building consent through Tasman District Council, plus any coastal or resource consent your site needs.
- Development contributions: we check whether the council development contribution has been paid on your section, so a charge the developer left behind does not surprise you at building consent.
Built for the coast
Detailed for salt air and exposure.
Coastal sites at Mapua and Ruby Bay carry their own conditions: driving sea breezes, salt-laden air and exposure that can wear ordinary materials fast.
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We choose durable claddings and fixings detailed to shed water and resist corrosion.
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Joinery is selected to handle years of salt air without swelling or failing.
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Warmth and dryness come from continuous insulation and careful detailing behind the cladding, with the option to build a Passive Home for a fully airtight, mechanically ventilated home.
Building here since 2006
Nearly two decades of building in Mapua and Ruby Bay.
The homes we build across Mapua and Ruby Bay are warm, dry and low to run, comfortable in winter and cool in summer, and designed to suit the sites and climate here. A warm, dry, well-ventilated home is a healthier home to live in too, better for your family's wellbeing year after year. And because we design around how you actually live, and the stages of life ahead, your home is built to keep fitting you as life changes. That is what nearly twenty years of building in one region gives you: homes that perform for the way people really live.
- Building since
- 2006
- Designed to last
- 50+ years
- 10-year guarantees
- Master Build + Halo
- Registered
- Master Builder + Certified Builder
"I wanted a home I could wear shorts and a t-shirt in year round and never feel cold."
Colin Hayman, Upper Moutere
Selected work across Tasman, Kaiteriteri & Nelson.
Many of our homes are completed under confidentiality, so this is only a selection. To see more, simply ask and we will arrange a private viewing or reference project.
Why build with us here
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Local and hands-on. A team working minutes from Mapua and Ruby Bay, out of our Upper Moutere workshop, and we know how coastal sites, soils and weather behave.
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Engineered to feel better to live in. Warm, dry and low to run, with the option to build a Passive Home.
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Built in the Open. Honest, open-book pricing, so you see where every dollar goes, from the first sketch to the final invoice.
What we do
Everything it takes to design and build your Mapua or Ruby Bay home.
You engage one company: us. We bring the architect, engineer and every trade together and manage them on your behalf, so you have a single point of contact and one team accountable, from the first sketch to the final invoice. You are our design partner, the home is shaped around what you want, and we look after everyone else.
Architectural homes
Bespoke, architect-designed homes shaped around your ideas, your site and the Tasman light.
Design and build
One accountable team from first sketch to handover, so the design stays buildable and on budget.
Energy-efficient, healthy homes
Warm, dry, energy-efficient homes built well above the minimum code. We build Passive Homes.
Renovations and extensions
Considered additions and reworks, built to the same standard as our new homes.
Complete project leadership
We coordinate every consultant, supplier and trade, and keep your build on time and on budget.
A personalised experience
A calm, communicative process, dealing directly with the people responsible for your home.
Our Mapua area build

Pippin Lane
A split-level home set into its slope over a lower-level garage.
View projectGood questions
Building in Mapua, answered.
Do you build in Mapua and Ruby Bay?
Yes. Mapua, Ruby Bay and the whole coastal Tasman strip are minutes from our Upper Moutere workshop, and we build regularly on the coastal sites and soils here.
What suits a coastal site here?
Materials and details chosen for salt air and weather: durable claddings detailed to last, joinery selected for exposure, and a continuously insulated envelope so the home stays warm and dry whatever the sea is doing. We walk you through the options for your site.
Do you build high-performance homes in Mapua?
Yes. Every home we build is well insulated and designed around the sun and the sea air, and we build Passive Homes, verified airtight by blower-door testing, when the brief calls for it.
Building in Mapua or Ruby Bay? Talk to us first.
Book a free one-hour consultation with founder Daryl Combes. No obligation, just an honest conversation about your site, your brief and your budget.
Arrange a consultation






