Open-plan living has long been the go-to layout of modern New Zealand homes. For many years, open kitchens and living areas have been an important selling point for homebuyers, and new builds still often embrace the one-big-room aesthetic. But as lifestyles shift, designers and homeowners are increasingly asking whether a completely open-plan layout is the right fit.

The appeal of open spaces is clear. Removing internal walls allows daylight to travel further, makes smaller homes feel more spacious, and keeps household members connected throughout their day.

In New Zealand, the average size of new homes has shrunk markedly: from Q3 to Q3 of 2013 to 2023, the average floor area of new dwellings consented fell from 195 m² to 136 m², a 30% reduction over ten years. Open layouts create the illusion of space and support a more modern, compact way of living.

Despite their popularity, open-plan homes can present serious challenges. With roughly 17.7% of employed New Zealand adults reporting they “mostly work from home” according to 2023 census data, remote and hybrid working arrangements are now a permanent feature of many households.

In that context, the lack of walls can make it difficult to find quiet, privacy, or separation between work, study and personal time. Open spaces also tend to be less energy-efficient: they’re harder to heat evenly, and noise travels more freely, both of which undermine comfort and liveability.

Knocking down internal walls should never be taken lightly. The first question is structural integrity. Many internal walls are load-bearing, and removing one may require engineers to specify supporting beams, a process that can significantly increase project complexity and cost.

Even non-structural walls can hide wiring, plumbing or insulation, and relocating these can push the budget higher. Removal work often triggers the need for building consent under New Zealand’s Building Act, especially where structural elements are disturbed.

Homeowners must also prepare for disruption. Demolition and reconstruction bring dust, noise, and mess; fine dust can spread through ducts and ventilation systems, even with protections in place. Insurance policies may require disclosure of structural changes, and failing to declare remodels could affect coverage.

Once a wall is gone, the real design work begins. Large open rooms need intentional zoning to avoid feeling cavernous and unwelcoming. Designers often use different flooring styles, lighting, ceiling features, area rugs, or shelving to distinguish the kitchen, dining, and living zones.

Acoustics also matter: without the sound barriers walls provide, soft furnishings, curtains, and textured textiles become essential for absorbing echoes and improving comfort. Temperature control is another concern; open layouts with high ceilings or poor insulation can lead to uneven heating during cooler months.

No matter what trends encourage, the best layout is the one that supports how you actually live, work and rest. It’s possible to design a home that combines openness and function with fewer regrets down the line.