10 Floor Plan Mistakes to Avoid Before You Build

Getting your floor plan right is one of the most important parts of building a new home. And while it’s easy to get caught up in choosing a beautiful kitchen, tiles and finishes, some of the decisions that will have the biggest impact on how your home feels happen much earlier.

A good floor plan isn’t just about fitting all the rooms in. It’s about how you move through the house, where the sun comes in, where your furniture will sit, how much storage you have and whether the spaces actually work for the way you live.

Here are 10 floor plan mistakes I see often, and the things I’d be checking before signing off on your plans.

1. Not thinking about where north is

Before you start moving rooms around, work out where north is.

The orientation of your home can have a huge impact on how comfortable it is throughout the year. Ideally, your main living areas should have good access to northern light, particularly if you’re building in a cooler or mixed climate.

Think about where the sun will be in winter and summer, rather than simply choosing a floor plan because you like the layout on paper.

2. Designing rooms before placing furniture

One of the easiest ways to test a floor plan is to put furniture into it.

Where will the sofa actually go? Where does the TV sit? Can you fit bedside tables beside the bed? Is there enough room to pull dining chairs out comfortably?

A room can look generous on a floor plan until you put real sized furniture into it.

I always want to see furniture shown on a plan before I’m comfortable with the room sizes.

3. Having too much wasted hallway space

Hallways are obviously necessary, but they can quietly eat up a surprising amount of your floor area.

If you’re paying to build every square metre, you want as much of that space as possible to actually be useful.

Look for long corridors, awkward corners and oversized circulation areas that could potentially be incorporated into rooms, storage or living spaces instead.

4. Not planning enough storage

Storage is one of those things you rarely regret having too much of.

Don’t just think about bedroom wardrobes and a pantry. Where will you put the vacuum, mop, linen, suitcases, school bags, coats, Christmas decorations and all the other things that accumulate in a home?

Look at your floor plan and actually identify where these things will live.

If the answer is the garage, you probably need more storage.

5. Making the kitchen island too big

A huge kitchen island isn’t automatically a better kitchen.

The space around the island matters just as much as the island itself. You need enough clearance to comfortably open drawers, use appliances and have people move through the kitchen without constantly getting in each other’s way.

I’d much rather reduce an island slightly and have comfortable circulation around it than squeeze in the biggest island possible.

6. Forgetting about window placement

Windows shouldn’t be something that gets added after you’ve worked out the rooms.

They affect natural light, ventilation, energy efficiency, privacy and where you can put furniture.

Think about the view from each window, which direction it faces and what will be outside it.

Also check that windows aren’t taking away the only logical wall for a bed, TV, artwork or cabinetry.

7. Putting rooms in the wrong place

Think about how you actually live.

Do you want the laundry close to the bedrooms? Do you really want guests walking past every bedroom to reach the powder room? Is the pantry close to where you bring groceries into the house?

There isn’t one perfect layout that works for everyone.

The best floor plan is the one that makes your everyday routines easier.

8. Ignoring door swings

This sounds incredibly boring until you’re living with a door that hits another door every day.

Check internal doors, wardrobes, showers, toilets and cabinetry.

Make sure doors aren’t colliding with each other or blocking important areas when they’re open.

Sometimes simply changing the direction a door swings can make a space work much better.

9. Designing for how the house looks instead of how it feels

A beautiful facade is important, but I wouldn’t sacrifice the internal layout just to make the front elevation perfectly symmetrical.

The same applies inside.

Try not to add spaces simply because they’re expected in a new home. If you never use a formal lounge, do you need one? Could those square metres make your kitchen, living area, storage or bedrooms better instead?

Every space should have a reason for being there.

10. Rushing the floor plan stage

This is probably the biggest one.

Once construction starts, moving walls, windows, plumbing and electrical becomes difficult and expensive.

Spend time walking through the plan in your head.

Imagine arriving home with groceries. Imagine doing the washing. Imagine everyone getting ready in the morning. Imagine entertaining. Think about where you’ll sit in winter and where the afternoon sun will hit in summer.

Your floor plan affects almost every other decision you’ll make during your build.

Take the time to get it right before you start worrying about finishes.

Before you sign off your floor plan

My biggest advice is to stop looking at your floor plan as a collection of rooms and start imagining yourself actually living in it.

Look at orientation, furniture, storage, natural light, circulation and how each space connects to the next.

A few thoughtful changes at the planning stage can make a much bigger difference to your finished home than an expensive benchtop or beautiful tile ever will.

And they’re usually much cheaper to change now than later.