Mattamy Homes is the largest new homebuilder in Canada with more than 50,000 homes in over 150 communities in and around Toronto, Ottawa, Calgary and major cities in the United States. A company generally does not have that much success by following shoddy building practices. In a recent independent home inspection by a recent client of ours who had a home built for them in Mt Holly, there were very very few issues discovered - and these minor items were quickly fixed.
But if you are buying a new home, you should remember that everyone the builder has you meet with works for the Builder. But when you come in with a New Home Buyers Agent Advocate (see below link), you will have someone working exclusively for you, always in your best interest. from the first contact through negotiations and construction to the final settlement and closing. Every decision. All the time. If you have a full time agent with a Masters degree in Planning with Finance and over two decades of experience, working for you, you will likely do better in negotiations. Id be pleased to provide that service.
The great thing with the advertized price of homes builders sell, is that a Realtor's commission is included so you can have a New Home Buyers Agent Advocate expertise at no additional cost to you. Buyers who fail to choose exclusive representation from their own Buyer Agent Advocate should expect to miss many thousands of dollars in unadvertised upgrades and savings. Because the built-in commission is not taken off of the price, your choice is essentially putting extra profit in the Builders pocket without any benefit to you. If you appreciate this answer, please give it a thumbs up, or if this was the most helpful answer, please say thanks with a best answer click.
They do try an help address these things within your first month, but after that it'll be tough to get attention. Would not recommend
With that being said, I don't think there are too many Builders completing new homes that don't appraise well in this day and age.
Of course I know nothing about Mattamy Homes so actual results may vary but you may want to walk through a model home to see for yourself if possible.
Now days, most builders are not churning out a large volume of homes are better able to supervise the work.
If you do not have a Realtor to represent your best interests, I would be happy to share how it can benefit you.