How much will it cost to extend on my house?

$3,500 - $4,000 per m2 is a starting guide to estimting the cost of a ground level extension, however the final figure will be dependent on things such as what type of room your adding and the complexity of integrating with the existing home.

Are house extensions worth it?

Absolutely! You deserve a home you love. Even with the existing structure, it is possible to extend the living space out, up or even down!

How do you fund a house extension?

Due to rising property values, most renovation projects can be funded through your bank, based on the increased captial value of your property.

Are small extensions worth it?

Small extensions are expensive on a m2 basis due to the first metre of any extension being the most expensive. Your needs will determine what extension is best for you.

Is it better to add on or build up?

Generally it is considered 20% more expensive to build up, compared to adding on. This is dependent on a combination of what you are allowed to do (based on site coverage and neighbour shading), and what you stand to gain e.g. views, sunlight, living space.

What is the most valuable extension?

From our experience and feedback from our customers; turning a 3 bedroom, 1 bathroom unit, into a 4 bedroom, 2 bathroom home is one of the more high return renoavtions. By adding an additional bedroom with ensuite, you significantly increase the occupancy in the home.

house extensions and additions

Make room for how you actually live, without leaving the place you already love.

more room,

same address

Feeling a bit tight on space? Thinking about a second living area or extending your home to include a master bedroom with an ensuite and walk-in wardrobe?

Across New Zealand, we’ve completed hundreds of house extensions and home additions for homeowners who simply needed more room or wanted to make the most of their views. We work closely with you to design a space that fits how you live and then take care of the entire build process from start to finish.

That includes detailed working drawings, managing building consents and coordinating our team of qualified tradespeople to deliver a seamless result.

GET IN TOUCH TO TALK EXTENSIONS OR ADDITIONS

Modern bathroom with a white freestanding tub, a wood vanity with a vessel sink, and gray tiled walls and floor.

3D design render of a modern renovated bathroom. Wood panel wall and a timber vanity. By Pzazz Building.

spreading out:

extending your space

Bigger living room?
Creating space for a teenager?
Elderly relative moving in?
Hosting Airbnb guests?

One of the first things to consider is whether your section can accommodate the type of home extension you have in mind. This includes checking site coverage ratios, boundary setbacks, and local council requirements, as well as making sure you still have outdoor space that suits your lifestyle. Whether you’re planning a bedroom addition, expanding your living area, or adding a minor dwelling-style setup, getting the balance right between indoor and outdoor space is key.

Extending key living areas or adding extra bedrooms is one of the most effective ways to improve both day-to-day comfort and long-term property value.

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List of services

home extension FAQs

How much will it cost to extend on my house?

$3,500 - $4,000 per m2 is a starting guide to estimting the cost of a ground level extension, however the final figure will be dependent on things such as what type of room your adding and the complexity of integrating with the existing home.
Are house extensions worth it?

Absolutely! You deserve a home you love.
Even with the existing structure, it is possible to extend the living space out, up or even down!
How do you fund a house extension?

Due to rising property values, most renovation projects can be funded through your bank, based on the increased captial value of your property.
Are small extensions worth it?

Small extensions are expensive on a m2 basis due to the first metre of any extension being the most expensive. Your needs will determine what extension is best for you.
Is it better to add on or build up?

Generally it is considered 20% more expensive to build up, compared to adding on.
This is dependent on a combination of what you are allowed to do (based on site coverage and neighbour shading), and what you stand to gain e.g. views, sunlight, living space.
What is the most valuable extension?

From our experience and feedback from our customers; turning a 3 bedroom, 1 bathroom unit, into a 4 bedroom, 2 bathroom home is one of the more high return renoavtions. By adding an additional bedroom with ensuite, you significantly increase the occupancy in the home.

building under:

developing your basement

In hilly areas such as Wellington, many of our homes have unused space underneath to accommodate their sloping sections. Others have a garage and storage space for the mower - but not much else.

Developed land in areas like Auckland and Wellington become more and more at a premium. Kiwi homeowners are making more of that under-utilised, under-house space. This can be achieved by developing the existing space, or jacking up the house to make room for a full new level underneath. We can provide advice on all types of basement renovations anywhere in New Zealand.

If you're thinking about adding a family room, granny flat, office, studio, home theatre or any other type of basement development to your home, contact the local Pzazz Building team today to find out what's possible at a free

in-home consultation.

FIND OUT MORE ABOUT BASEMENT AND GARAGE CONVERSIONS

going up:

adding an attic room or new level

If your home has under-used space up inside the loft, one of the most cost-effective ways to gain more space and increase the value of your home can be turning the space into an attic room. Think of all the uses - a bedroom, home office, sewing room - the sky's the limit! Attic renovations can be an extremely cost effective solution to create that additional space without changing the buildings overall dimensions.

The alternative if you don't have enough space is to raise the roof - literally - by increasing the height of your roof, or by adding a whole new level to your home. The two reasons people usually consider going up is either because your section size does not allow spreading out as an option and/or that by going up you get to take advantage of some great views.

NOT SURE WHERE TO BEGIN? LET'S START WITH A CHAT!

home extensions and additions articles

If you're thinking about extending or adding to your home, these articles are designed to get you started with ideas, inspirations, tips and the latest designs, products and technology.