Certified Builders, Licensed Building Practitioner, Halo 10 year residential guarantee insurance
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The faces behind Certified Home Extensions

Alvin Chisnall


Commander of Construction

Alvin is the Commander of Construction and Company Director of Certified Home Extensions. His primary responsibility is working with you from design to construction to ensure that the process remains stress free and runs as smoothly as possible.
There is nothing that he loves more and works harder for then the satisfaction of handing over a key to happy clients after another successful extension, renovation or new build has been completed.
When he isn’t on site or on the telephone speaking with clients and managing subcontractors, you can usually find him in the office compiling action plans that will show you every component that makes up your completed dream home.
Other then running around after his four adorable children Makayla, Sofia, Damien and Oakley or spending time with his lovely wife Annalise, his passion is helping you to create a home that you and your family can enjoy for decades into the future.

Alex Nguyen


Marketing & Operations Officer


Alex is a key member of the Certified Home Extensions team. He works closely with Alvin and Emily designing marketing campaigns and working on new initiatives that will allow the company to help more people such as yourself, know that we are the right builders to make the dream that you have for your home a reality.
When he isn’t developing the CHE brand to reflect the company’s family centered values, he is consistently modifying operations within the office to ensure that every person who comes into contact with our team has an unrivalled client experience.
Outside of office hours Alex enjoys spending time with his gorgeous partner Linda and beautiful daughters Ava and Violet especially when it involves walks on the beach, animated movies at the cinema and yummy meals out in flash restaurants.

Emily Higginson


Sargent of Sales


Emily is the vivacious voice behind the phone at Certified Home Extensions. Full of vim and vigor there is nothing she loves more than having a good natter with you about the dream that you have for your home and why we are best qualified to help you make it a reality.
As you proceed from design to construction Emily will support you every step of the way minimizing your stress levels and making sure you remain updated and informed about exactly what is happening with your project.
When she isn’t speaking with clients you can find her continuously working on marketing Certified Home Extensions making sure as many people as possible are aware of our superior reputation as the extension and renovation specialists. In her spare time she enjoys socializing, shopping, spending time with her loved ones including ratbag cats Dude & Bro and sitting (preferably somewhere sunny with a soppy romance).


The Certified Home Extensions have a broad range of knowledge in the building and construction industry especially when it comes to refreshing, renovating and maximizing the space + potential of treasured family homes. So if you have a building project which seems impossible don’t despair, tell us about it and we will do our best to make it happen for you
Continual ongoing improvement is one of the core values within our company and each member of our team contributes as we strive to provide not just a consistent but a constantly improving service to you throughout every stage of our process. We feel that this value is key to us being the industry leaders in terms of the experience that our client’s have, although we have been doing this for 13 years now there are always things that we are constantly striving to do better at. 
We hand pick everybody from office staff to the highly qualified subcontractors that we align ourselves with based on their passion for detail, friendliness, professionalism and ability to follow strict schedules. This means that we can guarantee that people with superior skills and huge passion are helping you to make the dream that you have for your home a reality from our Start Up Session to Construction. 
We hand pick our team of qualified carpenters based on their passion for detail, friendliness, professionalism and being able to follow strict schedules. This ensures that you receive highly skilled and passionate builders working on your home to meet deadlines.


Here at A & A our overall mission is to be an organization who is relentlessly striving to achieve the highest standards of workmanship and client experience. One of the ways that we make this a reality is through our 266 point Quality Assurance checklist which has been compiled based on Alvin’s 142 successful extensions and renovations.
A high quality extension is not the end goal, we want to ensure that both the dream home that we have made reality and the experience that you have had with us throughout the process is top quality and among the best, preferably better than any you may have elsewhere in the construction industry.
In order to achieve these high standards, the team at A&A is always seeking to continuously improve and better themselves so that we can enhance what we are providing you and your family. We want to work with you to create your forever home, where your children have the space that they need to grow up and grandchildren can one day play in the front yard.

Let's Renovate Your Home Together

Although we have completed over 139 projects, each one has been unique with special needs and requirements. That’s why we have developed our 7 Steps to Success so that we can get as much information from you as possible before providing you with our expert advice, recommendations and proposed solutions.









Your extension journey usually begins when you make the decision to give us a call on 09 236 6944.

During our first phone call we’ll ask you a few questions so that we gain the most accurate understanding possible of how we can help you best.

Once we have finished & become fast friends, we’ll schedule a time for one of our team to come out and see you so that we can complete the picture as to what your completed extension dream will look like


Once we have touched base for the first time (see Step One) we will usually schedule a time for one of our team to come out to your home and meet with you and any other decision making parties that may be involved with your project.

Our main purposes during this session is to leave with the full understanding of your reasons for choosing to extend or renovate, the financial resources you have available, the timeline that you would like to meet and the picture you have in your head of what your completed dream for your home will look like.

We encourage you to have on hand any ideas, house plans, section information, pinterest boards or any other relevant information that will be helpful for us when we are seeking to help you make the dream that you have for your home a reality. Remember any question is a good question so never be afraid to ask during these sessions!


(If you have plans already skip ahead to Step 5)
Once we have met onsite for the first time, we’ll arrange for you to meet with one of our personally chosen architectural designers who will be ideally suited to your project.

Their extensive experience (all of our designers have been drawing plans for 10+ years) will enable them to add to or improve any ideas that we have come up with together – that is if we haven’t found the perfect solution already ☺ while getting a feel for exactly what you want to achieve from your building project.

Within 2-3 days of this session we’ll send you an investment proposal for how much the designer believes the design stage of your dream will cost and once you are happy they will be able to start drawing!

With their extensive architectural experience, they will further add on to any ideas previously discussed and more and will be able to quickly identify challenges on site that council may pick us up on. By identifying these challenges early we can better prepare ourselves later down the track during council consents stage.


We pride ourselves on the way that we coordinate the process of getting from concepts to building consent from our clients, believing that bar any unforeseen complications we can have you ready to start construction approx six weeks faster then any other company.

The team at CHE does this through constant communication; with you so that you always know what is happening and with the designer + council to make sure that you remain a priority and that things happen as fast as possible.

Dealing with council especially can often be quite challenging and that’s the real bonus of dealing with a company like us, we spend our day working for you making sure that your dream for your home is made a reality as smoothly and with as little stress as possible!


Within 10 days of us submitting for Building Consent we will schedule a site visit with all of our important subcontractors e.g. builder, plumber, electrician etc. We feel that it is in the best interests of all parties to get the specialists to site to give us a price so to speak as they can sometimes make us aware of potential problems or issues, reducing the risk of any unforeseen surprises and giving you complete clarity before you start paying our guys to do a job that for some reason may be more difficult than expected for them to complete.

Once they have submitted their prices to us, we will compile them into a 13 page Action Plan. This Action Plan is tailored to your project and will give you a full understanding of what has and has not been taken into consideration e.g. we may exclude electrical work because you have your own electrician that you would like to use. Alvin will personally present this plan to you and go through every detail, the last thing that we want you to be saying is “Hey, I thought that was included.”


Hooray! Once you are happy and have signed off on your Action Plan we can usually begin construction within 4-6 weeks. (depending on the availability of the builder).

During Construction Alvin will organize weekly meetings and send weekly reports so that we ensure that you are kept updated every step of the way.

If you have a question, would like an additional meeting or require clarification at anytime then give us a call and we will be happy to arrange whatever necessary


The end of our journey together draws nigh! 🙁

At this stage your extension dream has been made reality, final payments have been made and you are living happily ever after!

You will also receive;
– Commercial Clean of your Home
– Signed Off Code of Compliance Certificate
– A Bottle of Champers and a Gift Basket to celebrate

Of course our journey together will never really be over, we pride ourselves on providing the ultimate level of service even when your building project has been completed If something should come up throughout the course of you living in your dream then feel free to give us a call and we will be more then happy to help

Tell us a little more about YOU!

Simply fill in the form below and one of our team will get in touch to discuss how we can best help you to make the extension dream that you have for your home a reality

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