Modern Beach House Designs
and Coastal Gardens

Modern beach house design is built around one decision: where you sit to watch the water. Everything else — deck level, roof line, glazing, planting height — follows from protecting that view and that seat. Keep furniture low and pale so nothing competes with the horizon, and use a single fabric umbrella rather than a heavy fixed roof.

Deck boards should run in the direction of the view, drawing the eye straight out to the horizon rather than across it, and the timber itself is best specified as a naturally durable species or a thermally modified softwood that copes with direct UV and salt-laden air without frequent oiling. Low-profile lounges with a sled or block base sit well below any glass balustrade, keeping sightlines clean when seated. A retractable fabric umbrella on a counterweighted base can be furled in minutes ahead of a change in wind, which matters far more on an exposed terrace than it does inland.

Plant for salt, sand and wind

Coastal gardens fail when they are planted like inland gardens. Choose silver and grey-green foliage, succulents, agave, coastal rosemary and dune grasses — species built for salt spray and free-draining sand. Mass them in drifts rather than dotting single specimens, and let wind-shaped forms stay wind-shaped.

Soil preparation matters as much as species choice: working coarse compost and a slow-release fertiliser into sandy ground before planting gives new specimens enough of a start to establish deep roots before the first dry summer. A windward hedge of tough coastal species such as coastal banksia or tea tree planted first will create a sheltered microclimate behind it, letting softer, more decorative planting survive further into the garden than it otherwise could. Drip irrigation buried beneath a mulch layer conserves the little water these gardens need and keeps salt crust from forming on the surface.

Outdoor showers and plunge pool courtyards

• Outdoor shower: the most useful thing you can build at a beach house — put it on the path between the beach and the door.
• Plunge pool: a small 4–6m pool suits coastal blocks better than a lap pool and warms faster.
• Hardware: marine grade 316 stainless everywhere; anything less rusts within a season.
• Screening: white rendered walls with timber slat inserts give privacy and bounce light.

A well-built outdoor shower needs its own dedicated drain point graded to fall away from the house, plus a hot and cold mixer tap so it can be used comfortably outside of peak summer. Small plunge pools respond quickly to a heat pump, often reaching a comfortable temperature within a single afternoon, and a cover or slatted timber lid reduces evaporation and heat loss overnight. Every fixing exposed to salt air — hinges, shower heads, pool ladder rails — should be true 316 marine grade stainless, since standard 304 grade will show surface rust within months this close to the water.

Light-filled coastal interiors

Inside, modern coastal means pale oak floors, white walls, raked ceilings and glass sized to frame the water. Furnish in linen, cotton and rattan with a restrained palette of sand, white and soft blue-green. Choose finishes you can wash sand off — this is a house that is meant to be walked into with wet feet.

A hard-wearing matt sealer on the oak floor makes a real difference here, resisting both gritty sand underfoot and the humidity swings of a house that is regularly opened to the sea air. Large sliding or bifold glass doors sized to the full width of the main living space let the room and the terrace function as one, and low-iron glass keeps the ocean colour true rather than tinted green at the edges. Ceiling fans paired with the raked ceiling move air through the space without needing constant air conditioning, and smart blinds set to close automatically at the hottest part of the day protect furnishings from UV fading while you are out.

Evening entertaining by the dunes

Coastal evenings get cool and breezy, so the entertaining zone needs shelter on the prevailing wind side, a heat source and warm lighting. A covered outdoor kitchen, a long timber table, festoon lights and a fire pit turn the windiest part of the day into the best part of it — and extend the season by months.

A partial wind wall or dense hedge on the prevailing wind side does more for comfort than any amount of heating, since it lets the fire pit's warmth actually stay in the space rather than being blown away. Outdoor kitchens this close to the coast benefit from stainless steel cabinetry rather than powder-coated finishes, which corrode over a few seasons of salt spray. Festoon lighting on a dimmable, weatherproof low-voltage circuit can be scheduled from a phone app to come on automatically at dusk, and a gas-fired fire pit with an instant on and off switch suits a breezy coastal site far better than an open wood fire that struggles to stay lit.