Adding a second storey is one of the most effective ways to gain space, capture Port Phillip Bay or Arthurs Seat views, and stay in the neighbourhood you love without buying a bigger block. For many Dromana households, building up makes far more sense than moving out.
Why Dromana homeowners build up
Land close to the foreshore and the township is tightly held, and many original homes sit on generous but low-slung single-storey footprints. A well-designed addition can double your living area while freeing the ground floor for open-plan living and the yard for outdoor space.
Views are a big driver here. A first-floor master suite or living zone can lift your sight lines above neighbouring roofs to take in the bay, the pier or the hillside behind McCrae. Done thoughtfully, a second storey also improves natural light and cross-ventilation, which matters on a coastal block that catches strong afternoon sea breezes.
Can your home actually take a second storey?
Not every house is a straightforward candidate, so the first step is an honest structural assessment. The existing footings, slab and wall framing were engineered for a single-storey load, and adding a floor above changes everything.
- Footings and slab: A structural engineer will check whether the current footings can carry the added weight or need underpinning and strengthening.
- Wall and frame condition: Older brick-veneer or timber homes may need reinforced or new load-bearing walls to support the upper floor.
- Roof and services: The existing roof comes off, and plumbing, electrical and heating often need reworking to serve two levels.
Sloping blocks are common around Dromana and towards Arthurs Seat, and they add both opportunity and complexity. A fall across the site can be used to step the design and frame views, but it also affects access, scaffolding and how the new level ties into the old.
Planning and permits on the Peninsula
Second-storey work almost always needs a building permit, and depending on your site it may also need a planning permit from Mornington Peninsula Shire Council. Overlays are the deciding factor, and coastal Dromana sites frequently carry more than one.
- Overshadowing and overlooking: New upper-floor windows and balconies must be designed to protect neighbours’ privacy and sunlight under the relevant standards.
- Height and setbacks: Building up brings you closer to height limits and daylight-to-neighbours rules, which shape the roof form.
- Bushfire (BAL) and coastal overlays: Blocks near vegetated slopes may have a Bushfire Attack Level rating that dictates materials and construction detailing, while foreshore areas can trigger design and environmental controls.
Because overlays vary street by street, it pays to confirm what applies to your property early. Getting the planning pathway right at the design stage avoids expensive redesigns later.
Designing for coastal conditions
A second storey is more exposed than the level below, so the coastal environment deserves real attention. Salt-laden air off the bay accelerates corrosion, and elevated rooms catch more wind, more sun and more weather.
Practical responses include marine-grade or powder-coated aluminium windows, corrosion-resistant fixings and fasteners, and durable cladding that handles salt spray. Eaves, glazing orientation and cross-ventilation should be planned to keep upstairs rooms cosy in winter and comfortable through Peninsula summers rather than relying on constant cooling.
Energy efficiency and compliance
Any new or altered floor area must meet the National Construction Code, and Victorian homes are held to a 7-star NatHERS energy standard. In a two-storey design, that means paying close attention to insulation, glazing performance and how the upper level is sealed and shaded.
A registered building practitioner will also arrange a domestic building contract and the required builder’s warranty (domestic building) insurance for the works. Confirming your builder’s building and construction services and their Victorian Building Authority registration up front protects you and keeps the project compliant from footing to handover.
How much does it cost, and how long?
Costs vary widely depending on structural upgrades, site access, finishes and how much of the existing home is reworked. As a rough guide, a second-storey addition is a major structural project rather than a cosmetic one, so budget accordingly and get a detailed, fixed-scope quote before committing.
Timelines also range considerably. Beyond the build itself, allow time for design, engineering, energy assessment and the permit process, which can take several months before work starts on site.
Living through the build
Because the roof comes off, most households move out for at least part of a second-storey build. Weatherproofing the exposed structure and staging the works carefully are essential, and a good builder will talk you through what to expect week to week.
Choosing the right local builder
Second-storey additions reward experience with older homes, tricky access and Peninsula overlays. Look at a builder’s completed recent projects to see how they handle structure, weatherproofing and finish, and ask how they managed council requirements on comparable sites.
As a local Dromana builder, DARC Building Group understands the coastal blocks, sloping sites and streetscapes across the area and the wider Dromana district, from Safety Beach through to Rosebud and Rye. Local knowledge helps a design sit comfortably in its street while making the most of your outlook.
If you are weighing up building up rather than moving on, a conversation with an experienced home builder in Dromana is the best place to start. Reach out to talk through your site, your budget and what a second storey could add to your home.
Frequently Asked Questions
Do I need a planning permit for a second-storey addition in Dromana?
You will almost always need a building permit, and many Dromana sites also require a planning permit from Mornington Peninsula Shire Council. This depends on overlays such as overshadowing, neighbourhood character, bushfire (BAL) or coastal controls that apply to your property. It is best to confirm which overlays affect your block at the design stage so the project is scoped correctly from the start.
Can any single-storey house have a second storey added?
Not automatically. The existing footings, slab and wall framing were designed to carry a single-storey load, so a structural engineer must assess whether they can support an added floor or need strengthening. Older brick-veneer and timber homes, and sloping blocks common around Dromana and Arthurs Seat, may need extra structural work, which affects both cost and feasibility.
Do I have to move out during a second-storey build?
Usually, at least for part of the project. Because the existing roof is removed to build the upper level, the home is temporarily exposed and works are noisy and disruptive. A good builder will weatherproof the structure, stage the work carefully and give you a clear timeline so you can plan your accommodation around the most disruptive phases.
How do coastal conditions affect a second-storey addition?
An upper level is more exposed to salt air, wind and sun than the floor below, which matters close to Port Phillip Bay. Marine-grade or powder-coated aluminium windows, corrosion-resistant fixings and durable cladding help the addition last, while considered glazing, shading and ventilation keep the new rooms comfortable and energy efficient year-round.