Adding on to your house isn’t a simple task, even if you know how to build an extension. Homeowners often forget to budget the cost of permits when planning that addition. Building permits can cost $500 to $1000 for small construction jobs, or up to $2000 for entire dwellings, something that should definitely be factored in early on.
Hiring an engineer or architect
Depending on the size or complexity of your project, you might need to hire an engineer or architect to draw up plans for your extension. Structural engineers charge between $90 and $200 an hour, while an architect could cost anywhere from $1200 to $1680 per square metre, depending on the materials used in the build.
Furniture or appliances
Don’t forget to include the costs of decorating or filling out that new room.
If you’re building a second kitchen, think about an oven, refrigerator, dishwasher, etc. If you’re adding another bathroom, there’s a vanity, sink, toilet and more to account for. What another bedroom? You’ll need a bed, dresser, rugs and bedside tables, just to begin with. You’ll also probably want artwork or picture frames to add some personal touches to the room.