Simple SketchUp Model & Research

Added Stair cases and bridges to connect upstair to an outside area. Materials for this could be like the one i made from wire and knots. 

Looking at creating the house in to a shape more like this one, having all the house on one level and just lifted, keeping the middle/bottom level as a staircase area that can be flooded and drained. 

Site, Weather & Flood/Climate Change Research:

29 Fisk Street Naenae, Lower Hutt.

15.501m x 25.799m

Wellington average weather graphs showing cold and wet climate compared to the rest of the country. 

http://www.worldweatheronline.com/Wellington-weather-averages/NZ.aspx

New Zealand is big enough to determine a climate pattern and a warming trend which has been slightly larger than the global average for both oceans and land which was 0.74 ± 0.18°C over the period 1906 to 2005 [Trenberth et al., 2007]. 
http://www.spatialdesign.info/blog/wp-content/uploads/2014/02/synthesis-community-vulnerability-resilience-and-adaptation-to-climate-change-in-nz_53.pdf 

Wellington has the highest rate of sea level rise in NZ and Highest areas in the region that are vulnerable to coastal flooding over the next 100 years.
The sea level in Wellington is currently increasing at 2.03mm/yr.
Areas at risk of flooding are: The mouths of rivers and streams including Otaki, Waikanae, Hutt and Whakataki Rivers. 
Due to climate change storms that we get will increase in severity. Storm tide events may become longer, increasing the likelihood of coastal erosion and flooding. 

http://www.gw.govt.nz/wellington-highest-rate-of-sea-level-rise-in-nz/