Fairfax County Government released information on Mar. 26 to help residents protect their trees when construction takes place next door. The county outlined several steps homeowners can take to minimize the impact of construction activity on tree health, especially since most tree roots are shallow and may extend beyond property lines.
The advice is intended to help prevent unnecessary damage to trees, which can be harmed by digging, heavy equipment, and changes in soil conditions. According to the county, even a small disturbance is usually manageable for a tree, but significant disruption could lead to long-term harm or even death.
Residents are encouraged to review approved construction plans from neighboring projects so they understand where digging and machinery will be located. The county also recommends learning about local tree root systems—most roots are found within the top 24 inches of soil—and suggests using the trunk’s circumference in inches as an estimate for how many feet important roots may spread from the base.
If major root zones might be disturbed by nearby work, homeowners should consult a certified arborist who can assess the situation and recommend protective measures. Open communication with neighbors is also suggested: “Healthy trees add value, provide shade, and support wildlife. A quick conversation can help everyone understand why they’re worth protecting,” officials said.
To assist further, Fairfax County’s Land Development Services has launched a new Protecting Your Trees webpage with more details about what residents should expect during neighboring construction projects. This includes information about normal noise levels during permitted hours, keeping equipment onsite, dust control measures, street cleanliness requirements, and proper dumpster placement within work areas.
Residents who observe potential violations at construction sites are advised to submit complaints through PLUS. The county concludes its guidance by reminding residents: “Keep your trees happy and healthy all year round!”