Quick answer: Extending a waterfront home requires extra thought around foreshore building controls, material choices that suit the exposure, and a design that captures the view without disconnecting from the rest of the house. Here’s what we learned building a double-storey extension on a Kilaben Bay block.
Building near the water changes the brief. Views, exposure, and integrating with an existing home all move up the priority list. Here’s what we took away from a recent double-storey extension on a Kilaben Bay waterfront block, relevant if you’re in Kilaben Bay, Dudley, Warners Bay, Speers Point or anywhere else along the Lake Macquarie foreshore.
The Brief
The project called for a master retreat above the existing alfresco area, positioned to capture uninterrupted lake views while integrating seamlessly with the rest of the home. That meant designing the new upper storey to sit naturally on top of an existing structure, not just adding a box on the roof. You can see this build in full on our portfolio page.
What Made This Build Work
Capturing the view without losing the connection to the home. A smart glass stacker door system with raked windows opened the new retreat up to the water while keeping sightlines through to the rest of the house, rather than isolating the new addition as a separate zone.
Materials chosen for the setting. Aluminium cladding to the eaves and alfresco ceiling, a dry stack stone fireplace, and cathedral ceilings gave the new space a coastal, textural feel that suited the waterfront outlook rather than fighting it. Materials near water and exposed positions generally need to handle more moisture and weather exposure than an inland build, worth discussing early with your builder.
Communication throughout a more complex build. Extensions on waterfront or foreshore-adjacent blocks often carry extra planning considerations, and more moving parts during construction. Our approach here, and on every project, is weekly phone catch-ups during construction so nothing about progress or decisions comes as a surprise. This is the same approach behind our dedicated second-storey extension service.
As one client put it: “The team were easy to deal with, readily available to answer questions and address any concerns we had along the way.”
What This Means If You’re Extending Near the Water
Waterfront and lake-adjacent blocks can come with additional considerations around foreshore building controls, so it’s worth raising this early with your builder and certifier rather than after a design is locked in. Second-storey additions in particular tend to draw more attention during assessment, since they can affect neighbouring views and overshadowing. If your block sits in this category, our council approval guide covers how the certification process generally works, and our second-storey vs ground-floor comparison is worth reading if you’re still deciding on the right approach for your block.
For a cost comparison against other extension types, see our Newcastle extension cost guide.
Frequently Asked Questions
Do waterfront properties need special approval to extend? Often yes, foreshore-adjacent blocks can carry additional planning considerations beyond a standard extension, so it’s worth confirming this with your certifier early in the design stage.
What materials work best for a waterfront extension? Materials that handle moisture and weather exposure will tend to perform better long-term, aluminium cladding and stone were both used on this project for this reason.
Can a second storey be added above an existing alfresco or outdoor area? Yes, this was the approach on this project, though it requires the existing structure to be assessed for suitability during design and planning.
Thinking about a waterfront project of your own? Get in touch.