Can fill be brought onto a New Brunswick property?

Yes, fill can absolutely be brought onto a New Brunswick property — but there are important regulations, practical considerations, and soil quality factors you need to understand before doing so.

Bringing in fill is common in NB for raising low areas, improving drainage, creating level surfaces for hardscaping, or building up garden beds. However, it's not as simple as ordering a load of dirt and spreading it around.

Regulatory Considerations

The biggest concern in New Brunswick is how fill affects drainage and neighbouring properties. If a significant grade change is involved — particularly one that redirects water flow toward a neighbour's property or toward a watercourse — you may need approval under the Watercourse and Wetland Alteration Regulation. The Province of New Brunswick takes drainage and watercourse protection seriously, and work done near wetlands, streams, or drainage channels requires a permit from the Department of Environment and Local Government.

For large-scale fill projects, your municipality may also have grading bylaws. Fredericton, Moncton, and Saint John each have their own rules around lot grading, so checking with your local planning office before bringing in significant quantities of fill is always a smart first step.

Fill Quality Matters Enormously

Not all fill is equal, and this is where many NB homeowners run into trouble. Clean fill — meaning uncontaminated soil, gravel, or rock — is what you want. Be cautious about accepting free or cheap fill from unknown sources, as it can contain construction debris, contaminated soil, invasive plant seeds (like Japanese knotweed rhizomes, which are a serious problem in NB), or materials that will create drainage and settling problems down the road.

If you're bringing fill in to support lawn or garden areas, you'll likely need to top it with quality loam or topsoil — NB's native soils tend to be acidic and clay-heavy in river valleys or sandy in coastal areas, so matching the right topsoil to your intended use matters. A soil test afterward is always a good idea, as pH adjustment with lime is commonly needed.

Practical Tips

Before ordering fill, have your property graded and drainage assessed so you know exactly how much you need and where it should go. Fill should always be sloped away from your foundation — a minimum 2% grade over the first 3 metres is the standard. Allow for settling time as well; fill compacts over months, especially through NB's freeze-thaw cycles, and you may need a top-up the following season.

For small projects — filling a low spot, levelling a garden bed — this is very manageable as a DIY project. For anything involving significant grade changes, large volumes of fill, or areas near watercourses or property lines, hiring a professional with grading experience is strongly recommended. Improper grading is one of the most common and costly landscaping mistakes, and NB's frost depth (1.2–1.5m) means settling and heaving issues can compound quickly.

If your fill project involves drainage work, retaining structures, or significant regrading, the contractors available through New Brunswick Landscaping and the broader New Brunswick Construction Network (newbrunswickconstructionnetwork.com) can help connect you with experienced local professionals. Getting it right the first time saves significant money in the long run.