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KN Construction Ltd / Builders in Mt Wellington


Primary contact
Karl Nicholas

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  • 88%
    "Karl and the team at KN construction built us a lovely new extension to our existing lounge - we are delighted with it - it has massively improved our living environment. Karl was approachable and calm, which made the build experience less stressful, and really went the extra mile to make sure everything was completed to a high standard. The team were polite and friendly, which really mattered as they were in and around our living space most days. We had the added difficulty of managing the lockdown of 2021 and disruption to building supplies and Karl kept us well informed along the way. Karl talked over different options for our budget and worked with the co-construct system to help keep track of the budget and changes. We would fully recommend Karl and his team - they were reliable and produced a great finished product."
    Rating by: Mary  |  Rating posted: 25th Mar  |  Contact: Karl Nicholas  |  Job date: Mar, 2022
    Communication: 90%  |  Quality: 90%  |  Reliability: 80%  |  Value: 90%
    Mary25th MarMore details…
  • 100%
    "Karl and Kaycee helped with all stages of our project; from my first sketches of what I wanted through to to the final finish. They weren't fazed by my strict budget, and right through helped me decide what I could do to work within this. The project started on schedule, finished on schedule (and on budget!), and was finished to the highest standard. In fact - the only parts of the project that didn't go quite to plan were those I organised myself! "
    Rating by: Joanna  |  Rating posted: 29th Jul, 2021  |  Contact: Karl and Kaycee Nicholas  |  Job date: May, 2021
    Communication: 100%  |  Quality: 100%  |  Reliability: 100%  |  Value: 100%
    Joanna29th Jul, 2021More details…
  • 100%
    "KN Construction carried out a major renovation including digging out under the house to create a new bottom storey with bedroom, bathroom and rumpus room. They also renovated two other bathrooms, a living area, and built a substantial retaining wall on the boundary. The team on site were a pleasure to deal with and the job was finished to a high standard with great attention to detail. It was easy to work through any issues that arose as their communication and problem solving was excellent. They managed the great team of subcontractors efficiently. We would highly recommend KN Construction to anyone wanting a great builder."
    Rating by: Jessie  |  Rating posted: 14th Jun, 2021  |  Contact: Karl Nicholas  |  Job date: Jun, 2021
    Communication: 100%  |  Quality: 100%  |  Reliability: 100%  |  Value: 100%
    Jessie14th Jun, 2021More details…
  • 100%
    "I engaged with Karl and the team at KN Construction to complete a reclad after discovering some rot in the timber framing of my plaster house. It was quite a stressful time not knowing what would be found behind the walls. Karl & Kaycee talked me through the process and were realistic when quoting the job, luckily we didn’t find any nasty surprises when the cladding came off so were able to use some of the timber allowance to strengthen the roof structure and for extra insulation that was needed. Matt the Foreman on my job was great, he kept me informed everyday and made it as stress free as possible living in the house while the building was going on. Nothing was too much trouble as we made a couple of changes during the job. The KN Construction team both on the tools and in the office were awesome to work with, bringing the project in on time and within budget (excluding variances I choose). They also managed their subbies and the building inspections well, with no stress for me. I’d highly recommend working with the team at KN Construction."
    Rating by: Leonie  |  Rating posted: 8th Apr, 2021  |  Contact: KN Construction  |  Job date: Apr, 2021
    Communication: 100%  |  Quality: 100%  |  Reliability: 100%  |  Value: 100%
    Leonie8th Apr, 2021More details…
  • 100%
    "KN Construction extended and renovated our house for us from August 2019 through to May 2020. Their team is great. Reliable, approachable and professional. The builders onsite were always available for questions or to problem solve when the need arose. They have reliable and professional contractors they use also. "
    Rating by: Gillian  |  Rating posted: 4th Nov, 2020  |  Contact: Karl and Kaycee Nicholas  |  Job date: Aug, 2019
    Communication: 100%  |  Quality: 100%  |  Reliability: 100%  |  Value: 100%
    Gillian4th Nov, 2020More details…
  • 100%
    "When we decided to partly renovate our house, our son had recommended us (based on his very positive own experience) to approach the KN Construction Ltd. We were extremely satisfied that we accepted this recommendation. At all our steps, from planning to completing the renovation, it was a real pleasure to collaborate with Karl and his team. There were no reliable blueprints for our quite old house and its equally old external pipelines. Therefore, our initial project was too optimistic and had to be corrected several times just during the ongoing work. Karl did the best in overcoming these unforeseen problems and in proposing or discussing alternative solutions. The COVID-19-caused disruptions obviously decelerated all the work, but did not affect its quality. We are very grateful to Karl for his wonderful work and very responsible and careful attitude to all the details."
    Rating by: Georgy  |  Rating posted: 4th Nov, 2020  |  Contact: Karl Nicholas  |  Job date: Sep, 2020
    Communication: 100%  |  Quality: 100%  |  Reliability: 100%  |  Value: 100%
    Georgy4th Nov, 2020More details…
  • 100%
    "We first met Karl in 2016 through NoCowboys when we were first planning on having changes done to the house. At the time we were really taken aback by how honest and candid he was about what it would take to achieve what we wanted and that we were not ready to go ahead with our plans, even though it was in his interest to get the job.

    In 2019, when we finally had the budget to make the changes we needed, Karl was our first port of call and together with Kaycee they did a wonderful job guiding us through the journey that was the project. We were, and still are, clueless about all the things that go into getting a construction/renovation project from concept and across the line, but we are happy to place our full trust in Karl, Kaycee and their talented team to get it done for us. Everyone in the team was kind, courteous and it was a pleasure having them in our home during the construction.

    Our project in 2019 was to extend the master bedroom to cover an internal deck, which included extending the roof and erecting new exterior walls on the 2nd storey. From liaising with the architect, electrician and painter/plasterer to the numerous other sub-contractors, Kaycee and Karl kept us in the loop on what was happening and offered their wisdom on difficult decisions that we needed to make along the way. The final results of the project blew us away and we are absolutely ecstatic to have the extra space in the extended room. The whole team did a wonderful job and went above and beyond to get things done right.

    We are also eternally grateful for how quickly Karl was able to get here when the tornado in St. Heliers ripped the tarp off our house late on a Sunday evening. At the time we were traumatised from seeing water stream into the house from the torrential rain. Karl rushed over on a moments notice and on his arrival we all breathed a sigh of relief as he quickly reattached the tarp and guided us on what to do to avoid any damage.

    I would recommend anyone looking for a builder they can trust to get in touch with KN Construction. We had an excellent first foray into construction/alterations with them and will probably be signing their praises for years to come.

    Rating by: Illya  |  Rating posted: 2nd Mar, 2020  |  Contact: Karl Nicholas  |  Job date: Sep, 2019
    Communication: 100%  |  Quality: 100%  |  Reliability: 100%  |  Value: 100%
    Illya2nd Mar, 2020More details…
  • 98%
    "We got in contact with KNC regarding renovating a clients home, we had a couple of quotes from different builders and found that KNC was competitive in their pricing and by far had the best customer service and face to face contact. They were super helpful throughout the entire process and dealt with any unexpectant building work that popped up along the way which made the whole process as stress-free as possible for me and my clients. "
    Rating by: Lucy  |  Rating posted: 30th Oct, 2019  |  Contact: Kaycee Nicholas  |  Job date: Oct, 2019
    Communication: 100%  |  Quality: 100%  |  Reliability: 90%  |  Value: 100%
    Lucy30th Oct, 2019More details…
  • 100%
    "We called KN construction and spoke to Kaycee about some urgent work we needed doing. Karl and Kaycee came over the next day and gave us a quote we were happy with. They were amazing to deal with and their quality of workmanship was great. I would highly recommend them. "
    Rating by: Christine  |  Rating posted: 2nd Oct, 2019  |  Contact: Karl Nicholas  |  Job date: Oct, 2019
    Communication: 100%  |  Quality: 100%  |  Reliability: 100%  |  Value: 100%
    Christine2nd Oct, 2019More details…
  • 90%
    "I contacted Karl to build a fence between properties (3 neighbours). Karl & Casey were very patient as it wasnt easy getting all parties to get on board. We had to remove a hedge first. So it took months to get to the stage where we were ready for the fence. The workers were straight into it and did a good job, weather wasnt the best. They were all easy to talk to. Fence looks good and all neighbours are happy :-) I have recommended KN Construction."
    Rating by: Chris  |  Rating posted: 22nd Sep, 2019  |  Contact: Karl Nicholas  |  Job date: Jul, 2019
    Communication: 90%  |  Quality: 90%  |  Reliability: 90%  |  Value: 90%
    Chris22nd Sep, 2019More details…
  • 98%
    "KN did a major renovation on the interior of our house over 2 months. Two new bathrooms and reconfiguring the interior layout. The entire project was well managed by Karl & Kaycee including plans and the consent process. Excellent communication and using the online app co-construct ensured we were always informed about specifications, costs, timeline, etc. Would definitely use KN construction again; and I recommend them to anyone looking for a professional building company. "
    Rating by: Craig  |  Rating posted: 1st Aug, 2019  |  Contact: Karl Nicholas  |  Job date: Jun, 2019
    Communication: 100%  |  Quality: 100%  |  Reliability: 100%  |  Value: 90%
    Craig1st Aug, 2019More details…
  • 100%
    "We did a fairly major renovation to our house and worked with KN Construction from concept to completion. We have been more than impressed with the workmanship provided. Karl is very trustworthy and provided detailed and clear communication throughout the renovation, so we always felt reassured and knew what was happening at all times. We are very happy with the final finish and would not hesitate to recommend Karl and his team. "
    Rating by: Charla Hopkins  |  Rating posted: 21st Feb, 2019  |  Contact: Karl Nicholas  |  Job date: Nov, 2017
    Communication: 100%  |  Quality: 100%  |  Reliability: 100%  |  Value: 100%
    Charla Hopkins21st Feb, 2019More details…
  • 100%
    "If you are looking for a totally reliable, qualified and co-operative builder who would release you from headaches, worries and anxiety, which are often associated with building projects, we strongly suggest that you approach Karl and Kaycee of KN Construction Ltd.

    We have no reservation in recommending KN Construction because we have had a very pleasant experience that we would like to share. We are so impressed by their extensive professional knowledge, outstanding work performance and outcomes, amazing capability in project management as well as their commitment to upholding high standards.

    KN Construction completed a bathroom and roof renovation project and new grass-paved lawn project for us with extremely high quality and very very efficiently, even ahead of the schedule! Karl, Kaycee and their team are great communicators, who are always ready to share ideas and information. They respond to enquiries promptly; their use of the co-construct software has also greatly facilitated exchange of information and ideas, making the building processes transparent. We are also grateful to Kaycee who is not only a top-grade administrator but also a designer who has great taste. She has given us valuable advice regarding choices and options.

    When we first looked for a reliable builder to renovate our bathroom and roof, we went onto the No Cowboy website and saw the very high rating of KN Construction. We approached Karl and got his response promptly. We were lucky to have found him because he understood our needs immediately and was able to give us his professional advice on the spot. Because of the successful experience gained in the renovation project, (and we shared some good laughs as well), we decided to ask Karl to take on a new project, i.e. using grass-pavers to re-do the lawn. Sure enough, Karl, Kaycee and the team delivered us a neat and tidy paved space before Christmas; and in about a month’s time, we have a lawn with green grass and pavers!

    We have no doubt that we will approach Karl again for our next few projects which we have already formulated in mind. Perhaps you should too!

    Ken and Grace Au

    Rating by: Grace  |  Rating posted: 24th Jan, 2019  |  Contact: Karl Nicholas  |  Job date: Nov, 2018
    Communication: 100%  |  Quality: 100%  |  Reliability: 100%  |  Value: 100%
    Grace24th Jan, 2019More details…
  • 100%
    "Karl from KN Construction has built two decks for our body corporate. I have been impressed with the quality of the workmanship and choice of materials. Karl has selected the best pine timbers for our decks without knots or blemishes. His crew consist of well qualified builders and a keen apprentice. Their work ethic has been impeccable and it has been a pleasure to have his friendly team around.
    Rating by: Mary  |  Rating posted: 21st Sep, 2018  |  Contact: Karl   |  Job date: Sep, 2018
    Communication: 100%  |  Quality: 100%  |  Reliability: 100%  |  Value: 100%
    Mary21st Sep, 2018More details…
  • 100%
    "KN Construction built a new front entrance at our house which included stairs, a deck, an extension to our porch and a new concrete path. "
    Rating by: Brittany  |  Rating posted: 13th Sep, 2018  |  Contact: Karl Nicholas  |  Job date: Aug, 2018
    Communication: 100%  |  Quality: 100%  |  Reliability: 100%  |  Value: 100%
    Brittany13th Sep, 2018More details…
  • 98%
    "We were adding an ensuite and wardrobe to our place and had a few builders come in and take a look, we were not quite 100% happy with them. We saw a KN Construction sign at a site down the road and gave them a call. Karl came through with a price and a time when they could start. We were impressed with their ability to manage the whole process and make it simple. Looking after all the trades it made the whole build easy for us, and all being managed through the co-construct site allowed us to keep up to date with everything. They offered some great ideas and solutions which made our project that much better. We were very happy with the level of service and quality of build. While there we also had them take a look at a few other little jobs which were carried out. The rooms were kept very tidy every day after they had finished. Karl and the team allowed us to be involved as much as we wanted which we enjoyed. I would highly recommend KN Construction and the teams that they work with. They were open and honest don’t cut corners. We have had nothing but rave reviews from everyone we have shown the additions to."
    Rating by: Hamish  |  Rating posted: 12th Sep, 2018  |  Contact: Karl Nicholas   |  Job date: Jul, 2018
    Communication: 90%  |  Quality: 100%  |  Reliability: 100%  |  Value: 100%
    Hamish12th Sep, 2018More details…
  • 100%
    "We heard about Karl (KN Construction) from a friend and we got him in to do our kitchen renovation building work and other renovations in the house. The service provided throughout the whole job from start to finish was highly professional and outstanding. We now have a rebuilt kitchen and butlers pantry and a new hall linen cupboard that all my friends are envious of! We gutted 2 rooms which were rebuilt and the redid ceilings as well in preparation for the cabinetry to go in. They took all the stress of managing a building project and delivered a fantastic result. If there was extra work or subcontractors to organise then it was done. I would recommend their services 100%."
    Rating by: Rebecca Morgan  |  Rating posted: 2nd May, 2017  |  Contact: Karl Nicolas  |  Job date: Jan, 2017
    Communication: 100%  |  Quality: 100%  |  Reliability: 100%  |  Value: 100%
    Rebecca Morgan2nd May, 2017More details…
  • 95%
    "Karl and Kaycee have helped us to convert our garage into a minor dwelling. The project turned out to be a lot more complex and took a lot more time than I've originally expected (mostly due to all the paper work and consent issues) and it is for the big part because of their support and professionalism at each and every stage that we finally got there. My wife and I are more than satisfied with their performance and with the quality of the end product. Thank you guys a lot :-) "
    Rating by: Andrey  |  Rating posted: 2nd May, 2017  |  Contact: Karl Nicholas  |  Job date: Mar, 2017
    Communication: 100%  |  Quality: 100%  |  Reliability: 100%  |  Value: 80%
    Andrey2nd May, 2017More details…
  • 100%
    "The great thing about Karl is his commitment to excellence - personally, and from his subcontractors. He went beyond the call of duty to identify anything resembling a defect from those he contracted.
    His advice was always available when requested, and proved to be beneficial on every occasion. His patience (and sense of humour) was admirable! We are very pleased with the finished product (our remodelled bathroom and toilet) and feel that a friendly and relaxed relationship was maintained throughout the project.
    Rating by: George   |  Rating posted: 7th Feb, 2017  |  Contact: Karl Nicholas  |  Job date: Feb, 2016
    Communication: 100%  |  Quality: 100%  |  Reliability: 100%  |  Value: 100%
    George 7th Feb, 2017More details…
  • 98%
    "We used KN Construction to renovate 2 bathrooms and to do remedial work. We found Karl and his team to be a delight to deal with. They completed the work on schedule and in a professional manner. Other tradesmen commented on the good workmanship. We will use KN Construction for our next project."
    Rating by: Karen  |  Rating posted: 10th Jun, 2016  |  Contact: Karl Nicholas  |  Job date: Jan, 2016
    Communication: 100%  |  Quality: 100%  |  Reliability: 100%  |  Value: 90%
    Karen10th Jun, 2016More details…
  • 88%
    "Karl was recommended to us for a major renovation, and has been great to work with. Karl managed the project from start to finish and kept us up to date with progress. Both his immediate team and other sub contractors were a pleasure to deal with and we are extremely pleased with the final result. "
    Rating by: Graeme  |  Rating posted: 18th May, 2016  |  Contact: Karl Nicholson  |  Job date: May, 2016
    Communication: 100%  |  Quality: 80%  |  Reliability: 80%  |  Value: 90%
    Graeme18th May, 2016More details…
  • 93%
    "Karl has helped me to convert a garage into minor dwelling. He had put forward a cost estimation based on the building plan and he was able to mostly stick to it until the project completed. I found Karl is very easy to communicated with. He always listen to our requests and was willing to do any change if we required. Karl is very reliable to us and has demonstrated a very good workmanship. I am happy to recommend Karl to any building work.
    Rating by: Frank  |  Rating posted: 10th Dec, 2015  |  Contact: Frank Xie  |  Job date: Nov, 2015
    Communication: 100%  |  Quality: 90%  |  Reliability: 90%  |  Value: 90%
    Frank10th Dec, 2015More details…
  • 93%
    "My experience with K N Construction was extremely good and I plan to use them again on our next building project."
    Rating by: Stanley  |  Rating posted: 19th Nov, 2015  |  Contact: Stanley Armon  |  Job date: Oct, 2014
    Communication: 90%  |  Quality: 90%  |  Reliability: 100%  |  Value: 90%
    Stanley19th Nov, 2015More details…
  • 93%
    "KN Construction were employed to built a large deck at a block of units (3 up and 3 down). The workmanship was of good quality and the job was completed in a reasonable time. Karl and co. were happy to make small alterations to the original plans and go the extra mile with any small requests. Friendly approach and good energy. I would highly recommend Karl (KN CONSTRUCTION) for any building requirements.
    Glen Howes


    Rating by: Glen Howes  |  Rating posted: 2nd Mar, 2015  |  Contact: Karl Nicholas  |  Job date: Feb, 2015
    Communication: 100%  |  Quality: 90%  |  Reliability: 90%  |  Value: 90%
    Glen Howes2nd Mar, 2015More details…
  • 100%
    "Karl has now completed two building jobs for us.
    First job repairing and replacing drooping garage entrance way in 2014,
    Second job removing a wall between two bedrooms and installing a wardrobe and reinstating all the gib and skirting boards and installing a stair case into our loft January 2015.
    Karl 's building skills are faultless, efficient, cost effective, he's on time and a pleasure to have around.
    We are having Karl back to have more work done and would recomend him to any person requiring a good builder with sound work ethics.

    Gary and Jan Auckland
    Rating by: Gary  |  Rating posted: 24th Jan, 2015  |  Contact: Karl Nicholas  |  Job date: Jan, 2015
    Communication: 100%  |  Quality: 100%  |  Reliability: 100%  |  Value: 100%
    Gary24th Jan, 2015More details…
  • 98%
    "We used KN Construction to renovate our new master bedroom and add an ensuite on. We chose KN construction as Karl had previously done some smaller jobs at our house and we had found him to be very reliable, professional and easy to communicate with.

    From start to finish Karl has done an amazing job with our new Master bedroom and ensuite. He assisted with the initial plans, and had some great ideas. I really liked that he provided an in depth review of the estimated costs before starting the job so that we could keep to budget and were not left with any additional expenses or surprises. The job was completed without any major issues and in a very reasonable time period. Karl worked well with all the other tradesmen that were present and helped to organise timelines.

    Sometimes I think it is difficult to find builders you get on with and can fully trust. We found this with KN Construction and would totally recommend them to anyone looking for building work.

    Rating by: Charla  |  Rating posted: 22nd Jan, 2015  |  Contact: Karl Nicolas  |  Job date: Dec, 2014
    Communication: 100%  |  Quality: 90%  |  Reliability: 100%  |  Value: 100%
    Charla22nd Jan, 2015More details…
  • 95%
    "Karl carried out the building work for us on our bathroom and toilet renovation. We found him excellent to deal with. He quoted on the job and pretty much came in on quote, where we were a wee bit over was really down to us adding a few things on, and Karl split this extra cost with us which was very fair. He always turned up when he said he would (highly valued considering other trades on the job were far less reliable), and he finished when he had agreed to - even when this meant working late into the evening. He was also really accommodating when other trades caused blow-outs to our schedule - he made himself available when we needed him back on-site. His follow up was really good - during the planning stages of the job he always came back on points he said he'd look into for us. He recommended another trade to us who we also found really good to deal with. Would definitely use again."
    Rating by: Kiri  |  Rating posted: 13th Jan, 2015  |  Contact: Karl Nicholas  |  Job date: Nov, 2014
    Communication: 100%  |  Quality: 90%  |  Reliability: 100%  |  Value: 90%
    Kiri13th Jan, 2015More details…

Primary contact
Karl Nicholas

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About us
KN Construction is owned and operated by Karl Nicholas. Karl started his building apprenticeship when he left school and has been building ever since bringing decades of experience to your project.
When you employ KN Construction you can be assured of a personal approach. Karl works on each project and KN Construction uses a small tight team of qualified and trusted contractors. Extremely high levels of quality is a priority. This is partly achieved through establishing excellent communication with the client throughout the project.

What we do
New Residential Home Builds
Let us build your new home. We specialise in new home builds from smaller to larger projects. We can take care of the entire process including obtaining the necessary consents.

Extensions, Renovations and Alterations
We undertake both minor and major renovations, extension and alterations of homes including new bathrooms.

Categories we service
Renovation, Luxury Homes Builders, Framing Contractor, Fencing Contractors, Door & Window Installation, Decks & Decking, Custom Homes Builders, Construction Companies, Cladding, Carpentry Contractors / Carpenters, Carpentry Companies, Building Designers, Builders, Bathroom Remodelers

Areas we service
Whitford, Westmere, Westfield, Western Springs, Wattle Downs, Waterview, Totara Heights, Three Kings, Tamaki, St Marys Bay, St Lukes, St Johns, St Heliers, Sandringham, Royal Oak, Remuera, Ponsonby, Point Chevalier, Penrose, Parnell, Papatoetoe, Panmure, Pakuranga, Otara (Manukau), Otahuhu, Orakei, One Tree Hill, Newton, Newmarket, New Windsor, Mt Wellington, Mt Roskill, Mt Eden, Mt Albert, Mission Bay, Meadowbank, Manurewa, Manukau central, Mangere Bridge, Mangere, Lynfield, Kohimarama, Kingsland, Howick, Hillsborough (Taranaki), Highland Park, Herne Bay, Half Moon Bay, Grey Lynn, Greenlane, Grafton, Glendowie, Glen Innes, Flat Bush, Eastern Beach, East Tamaki, Conifer Grove, Cockle Bay, Clendon Park, Bucklands Beach, Botany Downs, Beachlands, Awhitu, Alfriston, Airport Oaks

KN Construction Ltd has not given us their exact location, but they are based in Mt Wellington

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