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Jonathan Cocklin

Owner & Operator

Onelife Design & Build has earned a reputation for honesty, transparency, integrity and of course; craftsmanship. Jonathan leads a team of 8 full time team members to support the client partnerships ensuring a great client experience. Onelife Design & Build simply integrates all elements of the building process - consultation, architecture, permits, design, demolition, construction and overall management. Building, adding onto or renovating can be an overwhelming experience, we ensure that process is as seamless as possible. There will be obstacles along the way but we have your back - our clients are our obsession.

Our Mission

Onelife Design & Build's mission is to ensure our customers receive best in class service while offering beautiful results, on time and on budget.

Our Commitment

Warranty - First Year (Renovations + Additions + Custom Homes)

During the first year of occupancy of your home, your coverage includes:

•      Equipment & material within respective manufacturers warranties

•      Constructed in a workmanlike manner and free from defects in craftsmanship and material

•      Build in accordance with the Ontario Building Code; and free of major structural defects

Warranty - Second Year (Additions + Custom Homes)

During the second year of occupancy of your home, your coverage includes:
•      Water penetration through the basement or foundation walls
•      Defects in materials or work (caulking, windows, doors, etc.) resulting in water penetration into the building envelope
•      Defects in materials or work in the electrical, plumbing and heating delivery and distribution systems
•      Defects in materials or work which result in the detachment, displacement, or deterioration of exterior cladding (such as brickwork, aluminum, or vinyl siding)
•      Major structural defects
•      Violations of the Ontario Building Code’s health and safety provisions

Warranty - Seven Year Major Structural (Custom Homes)

A major structural defect is defined as:
•      Any defect in materials or work that results in the failure of a load-bearing part of the home’s structure or materially and adversely affects its load-bearing function
Any defect in materials or work that significantly and adversely affects the use of the building as a home

"I decided to entirely renovate my small bungalow in early 2020. This reno was a total gut and redo of both the main floor and basement, as well as some things on the exterior. Like most people, renovations make me a bit anxious, but upon meeting Jonathan and his team I was immediately put at ease. He listened to what I needed and wanted, then put together a plan. He organized getting the right architect for the job and then the project began. 2020 was not a good year to start a renovation due to COVID-19. Surprisingly, OneLife kept the job moving and kept on budget. There was a delay in completion but again, due to the pandemic, it was totally understandable and reasonable. I must admit there were a few small hiccups and discrepancies, but Jonathan and his team listened, deliberated, and came up with solutions we were both happy with. After completion, Jonathan maintained contact, checking in to make sure all was good. When things arose such as nail pops, or small cracks here and there due to settling, he had tradespeople return to touch up and get things back to pristine. To anyone looking for a firm that can handle everything from design to build, I would highly recommend OneLife Design and Build." 

- Al Bochmann

"Jonathan, his team, and partners are among the most professional and respectful people I have known. Their customer service is one of the highest in any industry and we are happy we had them finish our basement, adding quality living space to our home. Jon and Andrew were there every step of the way in a consultative fashion, managing the project and advising on obstacles and choices along the way. Their open communication, attention to concerns and questions as well as their prompt responsiveness make them a unique contractor that any client would be fortunate to work with. We are ecstatic about our new space. Thank you Onelife!"


- Trevor & Hillary, Burlington

"There is one key trait that I look for in a contractor - trust. Jon and his team have that to the highest degree.  Not only did they do an incredible job breathing new life into my home, they finished on time, came back to rectify any unforeseen hiccups immediately, and were polite and professional the entire time. And above all, I knew that I could trust that Jon's decisions and advice were all with my best interests at heart.  I won't hesitate to use Jon and OneLife Design and Build for stage 2 of my renos!!"


- Derek & Lauren, Burlington

“Thank you for all the hard work and dedication that you and your staff have shown in getting my beautiful house finished on time and on budget. I truly appreciate it! Continued success to you and your Team!”


- Tom, Stoney Creek

"Working with ODB was an effortless experience. Their communication, transparency and business acumen is only surpassed by their quality of work. When expectations are high, the ODB team always meets them with urgency, accuracy and creativity. We are so pleased to be in our new home and sincerely value the partnership."


- Amii & Lee, Burlington

"Great people. Thank you, Jonathan and Andrew, for your constant professionalism and willingness to go the extra mile. I would definitely recommend Onelife to others."


- Ron & Kim, Burlington

"Onelife Design & Build recently helped us complete an extensive renovation of our century home in Hamilton. From our first email to our final walkthrough, Jonathan and his team were responsive, attentive and professional. We had a vision of how we wanted our home to look but no idea how to realize our dream. The team at Onelife developed and executed a plan that exceeded our very high expectations. We particularly appreciated the hard work from Andrew and Dave – there was no problem they could not solve. We love our home and would enthusiastically recommend the services of Onelife Design & Build."


- Kellye & Iain, Hamilton

"We wanted more living space for our family and Jon and his team were able to provide a “good, better, best” scenario for us to determine what best suited our family. Jon was able to in-vision what we needed from our initial conversation and he and his team constructed our dream home within the timeframe he committed upfront - THANK YOU to Onelife Design & Build, we would definitely recommend them!"


- Angelica & Rory, Oakville

"Gray and I wanted to send our sincerest and delayed thank you to the Onelife Design team, especially Andrew. Andrew has gone above and beyond and we can’t thank him enough. We had a flood last year in July that resulted in our entire house being gutted. It required us to relocate with a 2-year-old, 5-month-old and a very active dog.  We were devastated and wanted to return home as quickly as possible. We had a horrible experience with our insurance company continuously delaying our renovation but with the help of Onelife Design and Andrew, we were able to turn this very unfortunate event into a positive. Not only did the team help meet the needs of our rebuild but Andrew went above and beyond by working the extra mile to get us home just before Christmas Day. Our family was happy and home by Christmas and we can’t thank enough for everything they did."
- Kerri and Gray, Waterdown

"We've worked on several projects with Jonathan and his team over the last couple years with great success. Small and large scale renovations and additions, to new home projects."


- Joel

"Impressive new homes and beautiful renovations! Jonathan and his experienced team are very professional, reliable, budget-conscious and always go that extra mile to make sure their clients are well taken care of. I know first-hand because I work with them on many projects and am always very impressed by how detailed and caring they are. I recommend them without any hesitation!"


- Grace

"We hired Onelife Design & Build for several projects including a complete kitchen redesign and renovation, moving walls on the main floor, replacing two-door systems and a ceiling, redesigning and replacing the entire outdoor entranceway and replacing an outdoor support beam for the house. The quality of the craftsmanship for every aspect of the work was absolutely first-rate. Jonathan, Scott, Andrew, and their teams are extremely knowledgeable and experienced, and they take great pride in their work. When we hired them, we were looking for a company that truly cared about quality of work and customer satisfaction, and who wouldn’t abandon us for other projects before the work was completed. Onelife left us feeling absolutely delighted with all of the results. I have nothing but high praise for this company and would not hesitate to strongly recommend it!"


- Robert & Steve

Onelife Design and Build renovated our house this past year. We expected this to be a stressful and difficult ordeal. However, much to our surprise (and relief), the opposite occurred. From the beginning, the Onelife team promised to make our renovation free of worry and anxiety, and they delivered. At no time did they let us down. Communication was always open - they kept in constant contact with us, providing weekly updates and next steps. They responded quickly to any of our questions or concerns by email or in person. Their commitment to excellence was also evident in their workmanship. We were pleased with the quality of materials and skill. All team members worked hard. They were professional, polite, and friendly and clearly enjoyed their job. We relied on their expertise, and received sound recommendations on both construction and design. It was a wonderful experience for us. We highly recommend Onelife Design and Build.

- Anne & Brian

"My husband and I purchased a new house and were looking for a renovation team that we knew we could trust as this was our first major renovation and we were very pregnant with our second child. When we met Andrew from Onelife we knew this was the company we needed to go with. He was so personable and overall just an amazing guy. This transcended across the whole Onelife team as well as all the external vendors they used. We knew we wanted to be very involved with the reno and finishings and Onelife allowed us to do that answering all our questions and providing their expertise along the way. It's so satisfying knowing this is a partner for life and we can call them if anything goes wrong or for our next reno project! We would definitely recommend."

- Ami & Troy

"We can't say enough about the incredible team at Onelife Design Build. The minute they came to our house to quote on our renovation, we trusted them immediately. They worked with us to get the right design that fit our needs and our budget.
The communication and transparency throughout the entire project was incredible. There were no surprises and we truly felt engaged, informed and in control every step of the way. Jonathan's eye for design meant we didn't need to consult with a designer/decorator, and the results are stunning. Scott, Rob and Andrew had such high quality standards that I never had to worry that something would be missed or any corners cut. My family couldn't be happier with our renovation; we would work with this team again in a heartbeat."

- Steve & Adine