East Gwillimbury is part brand-new suburb and part working countryside, with four old villages in between. A Queensville house handed over a few years ago and a farmhouse near Holt answer to the same Town Hall, but they have little else in common when it comes to servicing, permits and what a renovation actually involves.
Sharon and Queensville: new houses with unfinished lower levels
Between the 2016 and 2021 censuses, East Gwillimbury went from just under 24,000 residents to more than 34,000, the fastest growth of any Canadian municipality with over 5,000 people. Much of it arrived as new subdivisions, especially around Sharon and Queensville: two-storey detached houses and freehold townhouses, most of them handed over with a bare concrete basement, builder-standard finishes and a backyard of fresh sod. Owners tend to call once they have lived in the house for a while and know exactly what it is missing.
The lower level usually comes first. The Town's permit guide names finished basements and basement walkouts among the projects that need a building permit, so here we treat basement finishing as a permitted job with drawings and inspections from the start. If the space might later become a rental suite, the same guide lists creating a second dwelling unit in a house as permit work in its own right, so we take zoning questions such as parking to the Town before a layout is settled.
Holland Landing, where Yonge Street first ended
Holland Landing grew around a mill built on Yonge Street in about 1821, at the northern end of the road's original route, and today it sits a short drive up Yonge from Newmarket. Many of its houses have reached the age when the kitchen, the main bathroom, the floors and the walls are due for a second round of work.
When the plan involves taking out or adding a wall, the Town lists renovations with structural components among the work that needs a permit. We confirm which walls carry load, an engineer designs any beam and posts, and our framing crew builds exactly what the stamped drawings show.
Country lots around Holt and Brown Hill
Not every home in town is on municipal sewers. Farms and country properties around hamlets such as Holt and Brown Hill, along with some older lots in and near the villages, depend on a septic tank, a leaching bed and a drilled or dug well. That shows up first in the paperwork: the Town asks for the tank and the bed to be drawn on the site plan of any building permit application, even when the project never comes near them. It shows up again on the ground, because deck footings, an addition or a new walkway have to keep their distance from the well and the bed, so we find and flag both before anything is staked.
Heritage streets in Sharon and Mount Albert, and land near the river
Sharon grew up around the Children of Peace, whose Sharon Temple on Leslie Street is now a National Historic Site. In May 2026, Council adopted a heritage conservation district plan and guidelines for historic Sharon, the first district of its kind in town, taking in the old village along Leslie Street. Inside the district, a new addition, a new building or a demolition needs a heritage permit, and it has to be issued before the building permit. Mount Albert, first settled by Quakers in the 1820s, the Birchard brothers from Vermont among them, has its historic core around Centre Street and Main Street. The Town also keeps a Register of Cultural Heritage Properties, and if your house is on it, call the Town before exterior changes are drawn.
The East Holland River flows north to Lake Simcoe, and land along it, its tributaries and nearby wetlands can fall within the area regulated by the Lake Simcoe Region Conservation Authority. Its approval can be needed before the Town will issue a permit for an outdoor project, so a property's status on that map is one of the first things we confirm.