Single Storey vs Two Storey House NZ: Which Is Right for You?

When you're choosing a new home, the number of bedrooms and overall size are usually high on the list. But there's another decision that can have just as much impact on how your home works: should you build a single-storey or two-storey house?

There isn't one right answer.

For some households, having everything on one level makes everyday life simpler.

For others, building upwards can make better use of the section, create more separation between living and sleeping spaces, or leave more room outside.

And in Wellington, where sections come in all shapes, sizes and slopes, the land itself can have a big say in which option makes sense.

Here's what to consider when comparing a single storey vs two storey house in NZ, and how to work out which could be the better fit for you.

Single Storey vs Two Storey House NZ: What's the Main Difference?

The obvious difference is how the floor area is arranged.

A single-storey home spreads all of its rooms across one level, while a two-storey home divides them between two floors.

But that relatively simple difference affects much more than whether you'll have stairs.

It can influence:

• How much of your section the house occupies

• How much outdoor space you retain

• The separation between living and sleeping areas

• Accessibility

• Privacy

• Construction requirements

• How the home might suit you in the future

That's why we'd recommend looking at the decision in the context of your section and the way you want to live, rather than deciding that one option is automatically better.

When Does a Single-Storey Home Make Sense?

One of the biggest advantages of a single-storey house is simplicity.

With everything on one level, there's no need to move constantly between floors, and the layout can create an easy connection between bedrooms, living spaces and the outdoors.

Accessibility

If you're thinking about how your home might work over the long term, having everything on one level can be appealing.

There are no stairs to negotiate, which can make the home easier to navigate for young children, people with limited mobility and homeowners wanting to stay in their home as they get older.

Indoor-Outdoor Flow

A single-storey design can also make it easier for several areas of the home to connect directly with outdoor spaces.

Depending on the plan and orientation, living areas and bedrooms may all have the potential to open towards a garden, patio or deck.

A Connected Layout

For households that like living spaces and bedrooms relatively close together, a single-level layout can work particularly well.

The trade-off is that the home generally requires a larger footprint on the section.

If your site is compact, narrow or you're trying to retain a generous backyard, that becomes an important consideration.

When Could a Two-Storey Home Be a Better Choice?

Sometimes the best way to create more house isn't to spread out. It's to go up.

A two-storey design can provide a larger total floor area while using a smaller portion of the land.

That can be particularly useful on Wellington sections where space is at a premium.

Making Better Use of a Smaller Section

If you want three or four bedrooms, good living spaces and some usable outdoor area, fitting everything onto one level may take up more of the section than you'd like.

Building upwards can reduce the footprint of the house and leave more land available for outdoor living, gardens, parking or simply a bit more breathing room around the home.

If you're dealing with a particularly constrained site, our guide to narrow section house plans in NZ looks more closely at how the shape and size of a section can influence your choice of home.

Separating Living and Sleeping Areas

Two levels also give you another way to organise the home.

For example, you might have the main living, dining and kitchen areas downstairs, with bedrooms upstairs.

For some families, that separation works beautifully. Someone can be watching television or entertaining downstairs while the bedrooms remain a little more removed from the activity.

Making the Most of Your Site

In Wellington, building upwards may also create opportunities to make better use of outlook or sun, depending on the property.

But this is very site-specific.

A two-storey house isn't automatically the answer for a difficult site, just as a single-storey house isn't automatically the cheapest or simplest option. The section needs to be assessed alongside the plan.

Is a Single-Storey House Cheaper to Build Than a Two-Storey House?

This is where things get a little less tidy.

It's tempting to assume that a single-storey home will always be cheaper because it doesn't have an upper floor or staircase.

But you can't determine build cost from the number of storeys alone.

A single-storey home of the same overall floor area generally requires a larger roof and foundation footprint. A two-storey home may have a smaller footprint, but introduces other structural requirements and a staircase.

Then there is the section itself.

Earthworks, retaining, access, foundations, drainage and services can all have a significant effect on the overall project cost.

We've looked more closely at these additional expenses in Building Costs Wellington: What to Budget for When Building a Miro Home, including why the characteristics of your site matter when establishing a realistic budget.

So rather than asking simply, "Which one is cheaper?", a better question is:

Which option gives me the home I need while making sensible use of my section and budget?

Think About How Much Outdoor Space You Want

This is an easy one to overlook when you're comparing floor plans.

Imagine you have two homes with roughly the same total floor area. One spreads that space across a single level; the other stacks part of it upstairs.

The amount of land left around those houses could be quite different.

If having a lawn for children, a garden, a deck or entertaining space is important to you, look at the house and section together.

Don't choose a floor plan in isolation and discover later that you've sacrificed more of the backyard than you expected.

Our guide to choosing the right house plan for your section covers some of the other things worth considering, including orientation, sun, wind, privacy and access.

Think About How You'll Use the Home in Five or Ten Years

It's easy to choose a house for the life you have today.

Try looking a little further ahead too.

Will young children become teenagers who appreciate some separation from the main living areas?

Could you need a home office?

Are you likely to have older family members staying with you?

On the other hand, if this is a home you hope to stay in for decades, could stairs eventually become inconvenient?

You don't need to predict every twist in the road. But thinking beyond your immediate needs can help you choose a plan that continues to work as life changes.

What About a Sloping Wellington Section?

This deserves particular attention because, well, Wellington.

A sloping section can significantly influence the type of home that works best. The slope, access, ground conditions, orientation and amount of excavation or retaining required all need to be considered.

In some situations, a multi-level design may work with the contours of the land. In others, a different solution may make more sense.

We've covered this separately in Building on a Sloping Section in Wellington, which is worth reading if you're looking at a site where the topography is likely to play a significant role in the build.

Don't Just Count Bedrooms

When comparing Miro Homes plans, it's tempting to start with:

Three bedrooms or four?

That's useful, but it doesn't tell you how the house will actually feel to live in.

Look at:

• The size and position of the living areas

• Kitchen and dining layout

• Storage

• Bedroom sizes

• Bathroom locations

• Garage access

• Indoor-outdoor connection

• Privacy between different areas of the house

• How much circulation space there is

• How the house will sit on your particular section

A well-designed three-bedroom home may suit one household far better than a larger four-bedroom house, and vice versa.

We'll explore that decision in more detail in our next article.

Finding the Right Miro Homes Plan

At Miro Homes, our range of pre-designed house plans includes different sizes, layouts and configurations because there's no single type of house that works for every Wellington section or household.

Starting with a pre-designed plan means many of the major design decisions have already been worked through, while you can focus on finding the option that best suits your site, budget and the way you want to live.

If you're wondering how that differs from commissioning an entirely bespoke home, read Pre-Designed House Plans NZ: Are They Better Than a Custom Design?.

You can also browse our Miro Homes house plans and compare the different layouts available.

Single Storey or Two Storey? Start With Your Section

So, which is better?

Neither, on its own.

A single-storey home might give you the accessible, connected layout you're looking for. A two-storey home might allow you to fit the space you need onto a smaller footprint and retain more of your section.

The right answer comes from looking at your land, your budget and how you want your home to work.

If you have a Wellington section and you're not sure which Miro Homes plans might suit it, get in touch with our team. We can talk through your site and help you explore the options.