Guide · Waterfront and rural builds
Building on the shoreline in Northumberland County.
Before anything about the house matters, one question decides the project: is the land regulated. On a waterfront or rural lot here, the answer is often yes, and it changes what you can build, where, and in what order.
Two authorities, and which one you deal with depends on where you are
Conservation authorities are organised by watershed rather than by municipality, which is why owners on either side of the county end up dealing with different offices. Getting this right at the start saves a wasted phone call and, more usefully, tells you whose mapping to check.
West and central
Ganaraska Region Conservation Authority
Covers the Ganaraska River watershed along with the Lake Ontario and Rice Lake shorelines. This is the office for most work around Port Hope and Cobourg.
2216 County Road 28, Port Hope
905-885-8173
info@grca.on.ca
East
Lower Trent Conservation
Covers its own watershed across the eastern end of the region, which is the relevant authority as you move toward Brighton, Trenton and Quinte West.
Both authorities run an online map viewer and a property inquiry service, so you can establish whether a lot is regulated before you spend anything.
What triggers a permit
Moving earth counts, not only putting up walls.
Inside a regulated area, written permission is required for a list that is wider than most owners assume. Both authorities work from the same provincial framework, so the categories line up.
Buildings
● Constructing, reconstructing or placing any building or structure
● Changing a building’s use or potential use
● Increasing its size, or the number of dwelling units in it
Ground and water
● Site grading
● Placing, dumping or removing material such as fill, dirt or stone
● Altering or diverting a river, creek, stream or watercourse
● Interfering with a wetland, including filling, dredging or grading
The one that surprises people. Increasing the number of dwelling units is on that list, and the Ganaraska authority names basement apartments specifically. So a second unit going into an existing house, with no change to the footprint at all, can need conservation permission if the property sits in a regulated area. Worth checking before you plan an additional dwelling unit on a rural or waterfront lot.
Regulated does not only mean waterfront
Plenty of inland lots are regulated too.
The regulated features are broader than the shore. They include watercourses, floodplains, valley slopes, wetlands, the Lake Ontario shoreline, the Rice Lake shoreline, and hazardous lands. Lower Trent describes its own in the same terms: wetlands, steep slopes, valleys, watercourses and shorelines.
In practice that catches a lot of the attractive land in this county. A rolling lot with a creek at the bottom, a property backing onto a valley, a parcel with wet ground in the corner. None of it looks like waterfront and all of it can be regulated.
Being inside a regulated area does not mean you cannot build. It means where you build, how the ground is handled and what happens to drainage are all part of the approval rather than decisions left to the site.
The rules changed
Advice written before April 2024 is out of date.
The Province approved Ontario Regulation 41/24 on 16 February 2024. It replaced Ontario Regulation 168/06 and took effect on 1 April 2024, alongside related sections of the Conservation Authorities Act.
That matters when you are researching. A good deal of what is published online about conservation permits in Ontario describes the old regulation, and neighbours who went through this a few years ago went through a different process. Work from the authority’s current material, or from someone who has filed since the change.
Where to start
Check the mapping before you buy, not after.
Both authorities publish an online map viewer and run a property inquiry service, and the Ganaraska one has a search-your-property tool. Establishing whether a parcel is regulated, and roughly how much of it, costs nothing and takes very little time.
If you are buying land to build on, this belongs in the due diligence rather than after closing. A regulated strip across the part of the lot with the view is the kind of thing that changes what the land is worth to you.
If you already own it, the same check tells you what the design has to work around before any money goes into drawings.
What it means for the build
On a regulated lot the siting conversation comes before the design conversation. Where the house can sit, how far back from the hazard, how the grade is managed and where the water goes are all settled first, and the house is designed into that envelope.
That order is worth accepting rather than fighting. A beautiful set of drawings that assumes a position the authority will not approve is an expensive thing to redo.
Rural lots usually bring a second approval alongside it, since a property on private servicing needs its septic permitted through the County. Those two tracks are easier run together than one after the other.
We have been building across Northumberland County since 1999, including on shoreline and rural land, and we are based in Cobourg.
Frequently Asked Questions
Do I need a conservation permit to build on waterfront land?
+
If the property sits in a regulated area, written permission is required before constructing, reconstructing or placing a building or structure. Regulated features include the Lake Ontario shoreline, the Rice Lake shoreline, watercourses, floodplains, valley slopes, wetlands and hazardous lands. The only way to know for your parcel is to check the authority’s mapping, which is free.
Which conservation authority covers my property?
+
It depends on the watershed rather than the municipality. The Ganaraska Region Conservation Authority covers the Ganaraska River watershed and the Lake Ontario and Rice Lake shorelines, which takes in most work around Port Hope and Cobourg. Lower Trent Conservation covers its own watershed across the eastern end of the region, toward Brighton, Trenton and Quinte West.
Does site grading need a permit?
+
Inside a regulated area, yes. Site grading is on the list, as is placing, dumping or removing material such as fill, dirt or stone, and altering or diverting a river, creek, stream or watercourse. Interfering with a wetland, including filling, dredging or grading, is also covered. Earthworks alone can require permission even with no building involved.
Can adding a basement apartment need conservation approval?
+
It can, and this one catches people out. Increasing the number of dwelling units in a building is on the permit list, and the Ganaraska authority names basement apartments specifically. A second unit inside an existing house, with no change to the footprint, can still need conservation permission if the property is in a regulated area.
Does being in a regulated area mean I cannot build?
+
No. It means where you build, how the ground is handled and what happens to drainage become part of the approval rather than decisions made on site. The siting conversation simply comes before the design conversation, and the house is designed into the envelope that results.
Have the rules changed recently?
+
Yes, which is why older advice should be treated carefully. The Province approved Ontario Regulation 41/24 on 16 February 2024. It replaced Ontario Regulation 168/06 and took effect on 1 April 2024, along with related sections of the Conservation Authorities Act. A neighbour who went through this a few years ago went through a different process.
What should I do before buying waterfront or rural land?
+
Check the conservation mapping before closing rather than after. Both authorities publish an online map viewer and run a property inquiry service, and Ganaraska has a search-your-property tool. Finding out that a regulated strip crosses the part of the lot with the view is information worth having while you can still act on it.
Building on waterfront or rural land?
Send us the address, even if you have not bought it yet. We will tell you what the mapping shows before anyone draws anything.
Request a Free Estimate (905) 376-5585Keep reading
See our custom home builds, and the work we do in Cobourg, Port Hope, Brighton and across Northumberland County. More in the guides section.