Thyme Rothwell is a luxury over‑50s lifestyle village located just six kilometres west of Redcliffe. Rothwell offers 192 homesites supported by a suite of high‑quality communal amenities including open green spaces, a bowling green, pickleball courts and a pool.
RMA was engaged to identify opportunities for optimisation and to enhance the existing development approval through targeted stormwater and flood‑modelling engineering. Our team refined the stormwater management plan and flood model to improve efficiency and meet the needs of the development while retaining Council’s existing approval strategy.
Working collaboratively with the development manager and project manager, we supported a proactive and coordinated design approach. Our Civil team progressed the earthworks variation approval in parallel with the preliminary design for the entire site, enabling early completion of preliminary works. Detailed design for Stages 1 and 2 was finalised ahead of the development approval, helping the client maintain momentum and meet commercial timeframes.
A major challenge for the project was resolving the flood modelling requirements. With the site affected by both flooding and tidal conditions, approximately 100,000m³ of fill was required to achieve the necessary site levels. These constraints were addressed through refinement of Council’s flood model and the optimisation of onsite flood storage within the central parkland, supported by RMA’s design of the Anzac Avenue culvert upgrade. We also negotiated an interim stormwater solution with a neighbouring landowner to mitigate impacts and safeguard future regional drainage connections.
Our working relationship with local government created additional value for the client. By engaging directly with Council and state agencies, we were able to challenge assumptions relating to flood behaviour, park functionality and coastal hazard overlays. This collaborative approach enabled the successful remapping of the Erosion Prone Area overlay, avoiding a potential 20% reduction in development yield and strengthening the project’s long‑term viability.