Adding a Second Storey to Your Auckland Home: 2026 Costs, Consents & What to Expect

Add Value Renovations blog — Auckland renovation costs, consents and project guides 2026

When a second storey makes sense over a ground-floor extension, what it actually costs in Auckland 2026, the structural realities most homeowners overlook, and whether you can live in the house while it’s being built.

Doubling the Floor Area — Mt Roskill Second Storey + Louvretec

Suresh had raised his family in his Mt Roskill home — but as grandchildren arrived, the space couldn’t keep up. A second storey extension doubled the floor area and gave every generation room to breathe.

4.8

34 reviews

What our customers say

Google Reviews

4.8 (34)

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Jann Singer

4 months ago

Simon and Joanna of Add Value Renovations planned and completed our en-suite upgrade. We are entirely happy with the finished product and the service and care they provided. We especially appreciated the direct communication with Simon. He is a good man — honest, reliable, and easy to work with. The attention to detail and quality of the finish was outstanding.

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Carl Anderson

4 months ago

We loved working with Simon and the team at Add Value Renovations. Add Value's project manager Tim, and interior designer Joanna, had excellent communication throughout the entire process. The quality of the workmanship was top-notch and they completed our bungalow renovation on time and on budget.

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Rajeev Kishore

1 year ago

Simon working with you and your team was a truly positive experience. Your expertise, combined with your genuine care for our project, made the entire process smooth and stress-free. We're thrilled with the results and couldn't have asked for a better team to bring our vision to life.

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Leah song

1 year ago

Just wanted to take a moment to express my appreciation for the outstanding work you've done! A ext. renovation done by Add Value was truly a remarkable transformation. The kitchen and bathroom designs are not only aesthetically stunning but also highly functional. It's evident that a lot of thought and care went into every detail.

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Alex Salkeld

2 years ago

Simon and his team recently took care of renovating the bedrooms of our house. We are very happy with the quality of work and the professionalism shown throughout the project. The team was punctual, tidy and communicated well at every stage.

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Colin McLennan

2 years ago

Had the pleasure of using Simon and his team on a garage conversion project. Simon made the planning and building process easy and his team were professional in their approach. It was a project that was on time and budget. Have no problem recommending Add Value Renovations for your next project.

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Jo Nicoud-Garden

2 years ago

I worked with Simon at Add Value Renovations on a full home renovation and the experience was fantastic from start to finish. The communication was clear, the timeline was realistic, and the quality of the work speaks for itself. Highly recommended.

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K Noronha

2 years ago

We have used the services of Add Value Renovations twice over three years, once for bathroom renovations and more recently for our kitchen and deck. The quality of work has always been excellent and any issues that arose were dealt with promptly and professionally.

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Adding a Second Storey to Your Auckland Home: 2026 Costs, Consents & What to Expect

Doubling the Floor Area — Mt Roskill Second Storey + Louvretec

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