David has specilaised in Water Sensitive Design planning, design, construction and research since 2000.
Plan Changes - Development of stormwater plan change/structural plans, guidelines, policies and rules, supporting technical information and acting as an expert witness in Council hearings and Environment Court Proceedings.
Catchment Management and Development Plans - Water management plans throughout the Auckland region.
Cost and Benefit Options Analysis - CAPEX, OPEX and renewal costs and benefits using multi-criteria analysis of social, cultural, environmnetal and economic criteria in both "greenfield" and "brownfield" developments.
Technical Guideline Documents - Rainwater tanks, biofiltration (rain gardens, tree pits and planters) permeable paving.
David has specialised in sustainability frameworks and indicators since 2000. In 2006 he completed a PhD through the Auckland School of Architecture and Planning – “An Urban 3-Waters Sustainability Decision-Making Process”.
Sustainability Frameworks and Indicators - Selection and use of.
Sustainability Assessments - Specialised in urban 3-waters (stormwater, wastewater and water supply) infrastructure.
Quality of Life and Community Indicators - Selection and use of.
Betsy has a multi-faceted career in landscape architecture. Here are some of the latest examples of her work:
Master Planning, Maharishi Vedic Academy
David and Betsy have been active in resource recovery. Betsy completed her Masters in Landscape Architecture on the topic of incorporating environmental education opportunities in community recycling centres.
Feasibility Studies - Vermicomposting, windrow/in-vessel composting, resource recovery parks and drop off centres.
Zero Waste to Landfill Strategies - Technical and promotional activities.
Zero Waste Education - Presentations and community activities.
The combined civil engineering experience of David and the landscape architectural experience of Betsy provide a balanced practical and aesthetic approach. Both have permaculture design certificates with Betsy having a Diploma in Permaculture.
Our passion for community outcomes has naturally lead us to be active members of several trusts.
David Kettle is a member of the “NZ Foundation for Progress and Wellbeing Trust”. One of two trusts setup to execute the “Inspire NZ” programme to provide a pathway to progress and wellbeing for and by New Zealanders.
Betsy Kettle is a Trusee of the Sustainable North Trust, a zero waste and permaculture trust that is heading up a drive for a community recycling centre in Whangaparaoa and the co-convenor of the Hibiscus Coast Transition Town group.