Home Extensions

Thinking about extending your home in Auckland but no idea where to start? Don’t fear!

Certified Home Extensions ​are here to help!

WW3 breaking out because your children need their own space?

Queue for the bathroom longer then the time you spend in the shower?

Dreading the thought of moving & finding a new home that will meet all of your requirements?

Family growing, and you & your partner are dreaming of a spacious master suite, where you can get some peace & quiet?

If your answer is yes to at least one of the above questions, extending your home is definitely the perfect solution for your family.

While old homes are full of character, they often lack the modern amenities that your family deserves e.g. second bathroom or spacious master suite, why not live in the twenty first century?  enjoy a modern lifestyle that is made easy by indoor-outdoor flow, spacious bedrooms & more than one bathroom. If this doesn’t sound like your home, don’t despair and put it on the market, just consider an extension – that way you’ll get everything you need + the unique features of your present home that you adore. 

Depending on your individual situation and/or requirements you may want to extend your house up, out, down or a combination of the above. Read on to find out a little more about each option & start the process of considering which one might work best for your family.

Upper Level Extension

One of the main reasons people like to add an upper level to their home is so they can capitalise on the amazing views we are blessed with in this beautiful country we call home. If you can see Rangitoto from the garage roof, it is definitely worth considering going up.

Secondly. it is usually every kiwi families dream to kick a ball around the backyard or have a spacious deck flowing onto gardens that is perfect for entertaining family & friends.

Building an upper level means you can still get the space that you need, without compromising the super competitive game of backyard cricket you have every Christmas. 

Adding an upper level to your home generally requires the greatest financial investment, however the benefits far outweigh the cost.

A master suite or spacious living area full of sunshine, with gorgeous views is going to add far more to the value of your home, than a single bedroom that has been crammed onto a section that is already tight on lawn space.

Its important to keep in mind when you are considering extension options, that a new upper level requires shrink wrap and significantly more structural work than a single level extension. Its always worthwhile if you are going to get good views, or if there is no other alternative, but if cost is a factor, it may be worth considering other alternatives.

One of our most popular single level extensions is to increase the amount of indoor outdoor flow, usually through the addition of an open plan kitchen / dining / entertainment area such as the one that is featured here

Single Storey Extension

A single storey extension is the simplest and most cost effective method of adding more space to your home. This is because the excavation and strengthening costs are not as significant as they are with basement & upper level additions.

The most popular single storey extensions are the addition of a private, master bedroom suite that is full of sunshine and/or the creation of a spacious, open plan kitchen/living area. Doing one or both of these means that you and your partner can have quiet time on your own, while your growing family has the space that they need to stretch out or spill outdoors.

Adding more space to your home will also increase the resale value. Often by extending you are creating the kind of space that a future buyer will walk into & say “Wow, can’t wait to live here.” Or, alternatively be extending you are creating your forever home & no matter what, we guarantee you will be happy with the end result.

Basement Extension

Creating usable space out of the dark & dingy area underneath your home is something that is often overlooked as prime habitual living space. You will be amazed what can be achieved from what is probably a junk storage space.

Certified Home Extensions has successfully completed countless basement extensions of various different complexities and sizes ranging from a laundry and rumpus room, through to 2 double bedrooms a bathroom and a sunny second lounge space that flows out onto a spacious back yard.

One of the bonuses of a basement extension as opposed to a single level is that you often have more space to play with, as we are able to a significant portion of the area underneath your existing home. Whereas, when we are extending on the existing level of your home, backyards are often compromised to achieve the space required which can put the kids dream of a trampoline in jeopardy. 

Extending your basement can also stabilise your home & increase structural integrity. In one instance on a job we completed in Avondale, the home used to shake every time a truck went past, now it doesn’t move due to the additional strength that their new lower level provided. 

A basement extension is often the perfect space for some additional bedrooms or a rumpus room for the teenagers or perhaps a retreat for Mum and Dad where you can lock yourselves away and enjoy some peace and quiet.

This render is a great example of what a high spec basement conversion can look like. We took what was essentially dirt and transformed it into three bedrooms, a living area, a third bathroom and a second laundry. Enough space for the whole Hulena family to enjoy!

Auckland's most trusted home extensions expert!

4 reasons why you can trust Certified Home Extension to extend your treasured family home.

Building an extension or renovating an existing space is tremendously more challenging than starting from scratch with an empty section and building a new home. Experience is crucial when considering who will help you to make your dream home a reality.

After having successfully completed 176 home extensions, the Certified Home Extensions team has all the experience needed and more when it comes to working on treasured family homes.

Throughout his twenty-one years in the construction industry, Alvin has encountered and overcome just about every problem imaginable with a building project.

After thirteen years of focusing solidly on extensions and renovations, it is very unlikely that there will be a challenge arising from your project that we do not know how to overcome.

We totally understand that life is busy and it only seems to get busier! If you are anything like our previous clients, you probably struggle to spend adequate time with family and friends, which means you really do not have time to manage a building project!

This is where we come in. Our team will assist with your designing process (ensuring it runs as efficiently as possible), deal with the council in order to obtain the required consents, organise the sub-trades and then manage the construction process while keeping you updated every step of the way. We will ensure that you have a stress free journey towards making your extension dream a reality.

This means that you do not have to deal with any of the typical stresses involved with a building project e.g. ensuring the plumber turns up on time. We will leave you to focus on the excitement of dream home becoming true before your eyes.


We strive to make your extension dream a reality. We will work together with you throughout the whole project. Communication is key to ensure you understand what is going on all the time.  

Our team will update you once a week regardless of the stage we are at. We will always keep you in the loop, whether we are drawing up concept plans or hanging doors in your new extension. This means that we will never leave you wondering about the status of your project. You will have 24/7 access to your project schedule on our project management software as well as weekly emailed reports throughout construction.

We put a high emphasis on trust and communication right from the initial phases of your project. Architectural designers, tradespeople, engineers and council members always speak a different language and it is important that you feel comfortable. 

One of the ways that we strive to maximize your levels of confidence is through the 13-page Action Plan that we provide pre-construction. It is broken down into approximately 24 unique categories with all materials that will be built into your dream extension listed and included.

Sometimes it takes 2-3 revisions to get these 13 pages 100% correct but we are happy to do 200 revisions if that is what it takes. We want you to understand every detail and material that is going into your project. Rather than saying “Hey! I thought that was included!” we guarantee that you will be impressed with the depth of detail in what we have covered.

Our Action Plan provides the ultimate level of transparency meaning that you will have absolute clarity about constructing your dream extension.

Happy Clients

4 REASONS WHY EXTENDING YOUR HOME IS EASY WITH CHE

1. Expert Experience and Knowledge

Building an extension or renovating an existing space is tremendously more challenging than starting from scratch with an empty section and building a new home. Experience is crucial when considering who will help you to make your dream home a reality.

After having successfully completed 176 home extensions, the Certified Home Extensions team has all the experience needed and more when it comes to working on treasured family homes.

Throughout his twenty-one years in the construction industry, Alvin has encountered and overcome just about every problem imaginable with a building project.

​After thirteen years of focusing solidly on extensions and renovations, it is very unlikely that there will be a challenge arising from your project that we do not know how to overcome.

2. Complete Turnkey Solution

We totally understand that life is busy and it only seems to get busier! If you are anything like our previous clients, you probably struggle to spend adequate time with family and friends, which means you really do not have time to manage a building project!

This is where we come in. Our team will assist with your designing process (ensuring it runs as efficiently as possible), deal with the council in order to obtain the required consents, organise the sub-trades and then manage the construction process while keeping you updated every step of the way. We will ensure that you have a stress free journey towards making your extension dream a reality.

This means that you do not have to deal with any of the typical stresses involved with a building project e.g. ensuring the plumber turns up on time. We will leave you to focus on the excitement of dream home becoming true before your eyes.

3. (Awesome) Action Plans

One of the ways that we strive to maximize your levels of confidence is through our 13-page Action Plan we provide pre-construction. It is broken down into approximately 24 unique categories with all materials that will be built into your dream extension listed and included.

Sometimes it takes 2-3 revisions to get these 13 pages 100% correct but we are happy to do 200 revisions if that is what it takes. We want you to understand every detail and material that is going into your project. Rather than saying “Hey! I thought that was included!” we guarantee that you will be impressed with the depth of detail in what we have covered.

Our Action Plan provides the ultimate level of transparency meaning that you will have absolute clarity about constructing your dream extension.

4. Comprehensive Communication​

We strive to make your extension dream a reality. We will work together with you throughout the whole project. Communication is key to ensure you understand what is going on all the time.

Our team will update you once a week regardless of the stage we are at. We will always keep you in the loop, whether we are drawing up concept plans or hanging doors in your new extension. This means that we will never leave you wondering about the status of your project. You will have 24/7 access to your project schedule on our project management software as well as weekly emailed reports throughout construction. ​

We put a high emphasis on trust and communication right from the initial phases of your project. Architectural designers, tradespeople, engineers and council members always speak a different language and it is important that you feel comfortable.

Let's extend your home together!

We have completed over 176 unique projects each one with special needs and requirements. For this reason, we have developed our 7 Steps to Success. It allows us to 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 to ensure we keep you updated every step of the way.

If you have a question, would like an additional meeting or require clarification at any time give us a call. 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 Cleaning 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.

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 to ensure we keep you updated every step of the way.

If you have a question, would like an additional meeting or require clarification at any time give us a call. 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 Cleaning 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.

Let's extend your home together!

We have completed over 176 unique projects each one with special needs and requirements. For this reason, we have developed our 7 Steps to Success. It allows us to get as much information from you as possible before providing you with our expert advice, recommendations and proposed solutions.