Big Ideas, Real Impact.

Raumati Kāpiti Coast – Case Study

Project Overview

This project involved the construction of a discreet, self-contained tiny house located at the rear of an existing residential property in Raumati. The client’s goal was to create a separate, independent dwelling to generate long-term secondary rental income, while maintaining privacy, low visual impact, and harmony with the existing property and surrounding environment.

The project required full site creation, access development, earthworks, construction, and finishing — with the majority of works delivered in-house by Keen Builders.

Earth Works

  • this was a highly constrained site with significant access limitations:

  • No direct vehicle access to the rear of the property

  • Dense, overgrown vegetation throughout the rear section

  • Tight working space

  • No existing formation for construction

  • All site access had to be created from scratch.

Foundation

  • All earthworks were carried out in-house by Keen Builders.

  • Full vegetation removal and site clearing

  • Creating site access through the property

  • Excavation using a 1.7-tonne digger due to restricted access

  • Track dumping and track wheelbarrow removal of spoil

  • Rib raft slab foundation In house by Keen Builders

Framing

  • All framing was built on-site

  • Construction sequencing was carefully staged due to limited site storage

  • Construction of a small retaining wall to manage height changes between the two properties

Design & Build Process

This project followed a true design-and-build delivery model.

We sat down together with the client early in the process and worked collaboratively through every design and finishing decision — ensuring the tiny house functioned well, looked cohesive, and delivered long-term durability as a air-bnb rental asset.

The process included:

  • Collaborative design workshops

  • Material selection planning

  • Finish coordination inside and out

  • Colour and texture matching

  • Performance and durability assessments

  • Long-term maintenance planning

Every element was intentionally selected to work as part of a unified design system rather than isolated components.

Build Outcome