Clarington was formed in 1974 from the town of Bowmanville, the village of Newcastle and the townships of Darlington and Clarke, and its houses still reflect those roots. Bowmanville's older streets keep Italianate and Queen Anne homes, Courtice and Newcastle are mostly subdivision streets built since amalgamation, and Orono and the hamlets look north to the Oak Ridges Moraine. We plan every job around the community it sits in.
Darlington's suburbs, Clarke's farms and one permit counter
Until 1993 the municipality was called the Town of Newcastle, a name easily confused with the village of Newcastle inside it, so it was renamed Clarington, a blend of Clarke and Darlington. The old township line still describes the place well. Darlington, the western half, holds the two largest urban areas, Courtice beside Oshawa at Townline Road and Bowmanville at its centre, with farms and hamlets such as Hampton, Solina and Tyrone to the north. Clarke, to the east, is mostly farmland around Newcastle and Orono, with hamlets such as Newtonville, Kendal and Kirby.
On either side of that line, the building permit comes from Clarington's Building Division at the municipal offices on Temperance Street in Bowmanville. Its published list is worth reading first:
- Permit needed: structural alterations, additions, adding or altering plumbing, installing a fireplace, moving or lifting a house, and accessory buildings over 10 square metres
- No permit: replacing windows, doors, roofing or siding, new interior finishes on walls, floors and ceilings, swapping one plumbing fixture for another, or replacing a furnace
We help put applications together and keep them moving; drawings come from a designer or, where structure is involved, an engineer.
Bowmanville's older streets and the Beech Avenue district
Bowmanville became a village in 1852 and a town in 1858, growing around mills on Bowmanville Creek and Soper Creek; the Vanstone Mill still stands at King and Scugog streets. Clarington has more than 70 individually designated properties, and Beech Avenue in Bowmanville is the municipality's only heritage conservation district, with a district plan and guidelines of its own. The plan records Classical Revival, Second Empire, Italianate and Queen Anne houses on the street, alongside later Craftsman houses, foursquares and bungalows.
A designated property needs a heritage permit before any change that would remove, replace or damage a protected feature, and the Municipality's list is broad: windows, doors, porches and verandahs, chimneys, cladding, roofing material and trim, additions, and even patios, fences and retaining walls. Routine upkeep that leaves the appearance as it was does not need one, and most interior changes are exempt as long as the outside is left as it was. A kitchen or bathroom renovation inside an old Bowmanville house rarely enters the heritage process, while replacement windows or a rear addition often do, so we read the designation by-law with you before the scope is settled.
Courtice and Newcastle houses reaching their first big update
Courtice was a farming hamlet in Darlington Township, named for Thomas Courtice, who arrived in 1831, until housing developments from the mid-1980s turned it into a suburb of detached homes between Townline Road and Hancock Road. Newcastle remained a small village until new subdivisions began going up in the 1990s. The first Courtice subdivisions are now about forty years old and the Newcastle streets that followed are not far behind, the age at which original kitchens, builder bathrooms and bare lower levels tend to come up for replacement together.
The lower level is often the first of those projects. Our basement finishing page covers how we build below grade; in Clarington the extra decision is whether the space might later become an additional dwelling unit, because a rental suite changes where the entrance goes, how the ceiling is built and what the permit drawings must show. Settling that before framing costs far less than reworking a finished room.
Creek valleys, the lakeshore and three conservation authorities
Most of Clarington's creeks run south from the Oak Ridges Moraine to Lake Ontario, and the agency that regulates the land beside them depends on the watershed. Bowmanville Creek rises near Enfield, passes Enniskillen and Hampton, picks up Soper Creek in Bowmanville and reaches the lake at Port Darlington; it falls under the Central Lake Ontario Conservation Authority (CLOCA). Farther east, the Wilmot and Graham creek watersheds take in Newcastle, Orono, Newtonville and hamlets such as Leskard and Starkville, and those belong to the Ganaraska Region Conservation Authority (GRCA). Land in the far north, beyond the crest of the moraine, drains toward Lake Scugog and falls under Kawartha Conservation.
Since April 1, 2024, conservation authority permits have been issued under Ontario Regulation 41/24. CLOCA's guidance names new or enlarged structures, additional dwelling units, fill and changes in grade near a stream or wetland as work that may need its approval, and GRCA regulates land near watercourses, floodplains, valley slopes, wetlands and the Lake Ontario shoreline. On a valley or lakeshore lot, an addition can therefore need the authority's permit as well as the Municipality's, so at our first visit we look the address up on the correct regulated-area map. Ontario plans to merge conservation authorities into nine regional bodies from 2027, so the agency's name may change, but the check stays.
