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Success Stories

Andrew & Tanya

Totara Heights

Custom new build for an office – This build consisted of an office, workshop, ensuite and double garage.

Steve & Leslie

Western Springs

“We’re very busy people so we needed somebody that would do everything for us. We got Alvin and the Certified Home Extension’s team in and they did exactly that, we didn’t have to think about anything, apart from choosing a few colors. Everything was done for us, priced out and it was a complete turn key operation which made it so much easier for everybody”.

Alison & Peter’s
Before & After Video

Watch this video to see the transformation that we had done for them!

Andy & Charlotte

Owners of Spiral Drillers Ltd

“I felt that we were always kept in the loop, I really appreciated the weekly meetings where we would clarify things that we were unsure off. Alvin was very easy to approach along with the staff over phone and with any enquires and we would definitely use them again.”


Andy & Charlotte’s
Before & After Video

Watch this video to see the transformation!

Bruce & Linda

A very nice couple!

“We found that Certified Home Extensions had given us fantastic communication all the way through the project. When we needed to find out about different things and make decisions, Alvin and his crew always consulted and came up with good solutions.”



Part Owner of Spiral Drillers

“As far as workmanship and professionalism goes, I couldn’t recommend anymore than what I am saying here. He looks like he is really driven to succeed in his business and it is good to see the company out there really trying to do their best and I wish him the very best.”

Dennis Withy

Owner of Laser Electrical

“During the build project, Alvin’s boy were very courteous and polite, the site was always clean which is very important to my wife as we were still living at our place at the time. The attention of detail that Alvin and his crew gave to the job and to the finish was second to none. I would happily recommend Alvin to anyone who is looking to do a house extension because I know that he will do a great job and one of the better builders to work with?”

Kim Bowman

“We have always found Alvin’s  professional and friendly approach and effective communication to be valuable and getting his client’s designs right. Alvin is always conscious of the client’s brief and budgets through the process of his clients who are happy to refer work to both of our companies.”

Max & Diane


“In August 2009 I contracted Alvin Chisnall of Certified Home Extensions Ltd to undertake a large extension of 105m2 to my family home. I was extremely happy with the outcome, quality of communication, service and workmanship provided by the CHE team.

All of the trades employed by Certified Home Extensions possessed traditional ‘old school’ values and provided high quality workmanship and service.

I would have no hesitation in reemploying Certified Home Extensions for any future building work I may undertake & I would confidently recommend Alvin and the team as a solid and reliable building company that strives to provide a quality outcome in a professional manner.”

Charles & Carolyn


“Certified Home Extensions has just recently completed a major renovation and extension within our existing family home. We added an additional storey (composed of two bedrooms, a lounge and a bathroom), extended the original bathroom, lounge, dining room and added a new laundry and office space.

We have been impressed by the level of professionalism and high quality workmanship displayed by Alvin and his subcontractors. Throughout the different stages of our project they have been approachable and readily available to listen to any queries or concerns that we had. It was refreshing to have such a hardworking and reliable team onsite who remained calm and positive even when things were not going according to plan.

The project was completed on time and within our investment estimate so we were really happy. If we were to complete any building work in the future Certified Home Extensions would certainly be the first call that we would make & we would definitely recommend them to anybody.”

Josh & Mandy


“We got Certified Home Extensions on board to add a wing onto our existing family home as we have five rapidly growing young children.

Our much loved home is situated on a two hectare lifestyle block surrounded by rolling hills and established trees, we wanted to maximize these stunning rural views but were not sure how to best do so.

Alvin suggested we use larger windows and doors than what we had originally thought & now no matter what room of the house you are in you can look out of the window and see green – just the way we wanted it!

The goal of this extension was not just to see green, we also wanted to extend the lounge and add a new master bedroom, ensuite and laundry. This meant that we had a more usable living space, a new master suite to luxuriate in and a spare bedroom for family & friends.”

Jared & Sarah – Tuakau

“We contracted Certified Home Extensions in the early years of their company, to build our first home.

Alvin was understanding of our financial constraints & was very accommodating in allowing us to work with him on the building site to enable us to keep costs down with our investment estimate.

We moved into the house before the building was finished, which made it awkward for the builders.

But Certified Home Extensions were flexible in working around us to complete further stages as & when permitted.

Our home was a complicated design, Alvin took on the challenge, & we are happy with the end

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