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Al and Anne Visser

WE have the best shed!! It looks great, its built solid, it meets our needs. The best part was dealing with John. He listened to what we were looking for, he made a plan, he provided a very fair cost, he delivered...on time!! We asked for some additional work to be done, that was not part of the original contract. He provided a fair and very timely solution. If you are looking for a shed...go no further. This is the place.


So bought a little shed and wow. The street I live on is a very close community and for the past several days everyone has just been walking in my yard to look at my new shed. John and his team provided a quality shed on time. I know it’s just a shed but really when will people stop walking up to me and saying who built your shed! Probably won’t happen for awhile and I’m ok with that. It’s nice to find a company where a hand shake and a persons word actually mean something. So call John and then lock your gate when he’s done because everyone will be asking who built that awesome shed.

Mike from Grimsby

I purchased a shed this spring and must say - the customer service from the start to finished product was simply incredible! John and his team were exceptional to work with and the quality of the finished product exceeded my expectations. If only all customer experiences could be the same. Thanks John to you and your team - first class and I highly recommend! 10 star!!

Stuart & Linda Bolton

The shed John and team installed on our property is very well constructed and beautiful. The whole process was very easy, from ordering final shed, selecting options and colours, to final installment. I would recommend their product to anyone.


We recently purchased a large shed from Cornerstone Mini-barns. We absolutely love how it turned out. It was customized to match our house and was done so beautifully. We've have had many of our neighbours give positive comments on how beautiful our new shed is. John and his team were great to work with. They have great craftsmanship and costumer service. They are honest and hardworking. They were always quick to get back to us and everything was done so in a timely manner. We would highly recommend cornerstone mini-barns. It was a great experience and we are so happy!

Andrew B, Toronto

I am very impressed with John and the team at Cornerstone Mini Barns. From price to the quality of their products they are second to none. John is patient, expeditious and thorough when responding to questions. The team that builds the mini barns are industrious and equally as thorough. Where I would have used one to two nails, Cornerstone used three to four. They really are that good! Do yourself a favour, if you need a mini barn/shed go with Cornerstone.

Stewart & Susan

Our new mini-barn was finished flawlessly, assembled on site in less than a day and ahead of expected scheduling. Customer service is beyond excellent. Plans and details for the city were accepted by the inspection department and inspectors without issues.  Workers left no mess, no deficiencies and did it all with safety in mind and a cheerful demeanour. Professionalism, honesty, trust. A very pleasant experience and highly recommended.

Andrew Bodrug

It takes a fair bit to impress me, but John and the Cornerstone Mini Barns team have more than done this. Their craftsmanship and industriousness is second to none.


John and his team did a superb job in installing our new mini-barn. He took care of all the details with respect to the old shed and had it removed all the way up to putting things back into the new space thanks you for such a great job. Talk to John before you buy a shed the sizes selection colors and prices are the best.

Liz F.

I purchased a shed with Cornerstone and love it! John was really helpful selecting what I needed and not what he might have been able to talk me into. He was honest about the delivery schedule and when we needed to bump the dates, was very accommodating. The install crew were quick and left the yard clean and even left touch up paint for us. The shed is super sturdy and well built - it will be here for many many years.Thanks so much - we will be telling our friends about Cornerstone too!


We recently ordered a shed from John, it was delivered on time, looks great and the service from Cornerstone was top notch.  Highly recommend Cornerstone Mini Barns.


Had a shed made through cornerstone after much looking around at shed options and these guys looked like best value for money proposition. Very professional and easy going top deal with. And my shed looks the business. Very happy and highly recommend them to anyone looking for a shed option.

Tom M.

Thanks to John and his crew for a beautiful minibarn. Attention to detail was great in both framing and siding. John returned all calls and emails addressing every question and provided specs for the building permit. His professional and courteous manner instilled confidence at every step and it was refreshing that payment was not requested until completion.

Linda and Patrick

Very pleased with our new shed. John and his crew were very professional and I would highly recommend them. Thank-you very much John.

Art & Janice

We just got our new shed from cornerstone & it is awesome!!!!

Well built & the price was reasonable. John did an outstanding job along with his workers. Was up in 3 hrs!!!

Great service helping us design what we needed.

Would recommend this company when purchasing a storage shed!!!


We ordered a barn from John and as like the others we have had in other locations, they are great. Great quality and the guys who put them up are so USER FRIENDLY. Need a shed call John.

George & Deb

Shed looks great. Guys put it up in half a day. John was very helpful in explaining things to us.