Local tree-rule guide
Cambridge tree rules
Private-tree rules are present; check size/location exceptions.
The local rule
Cambridge requires a private-tree removal permit to remove, cut down or otherwise injure a tree with a diameter of 20 cm or more on private property.
The City has separate exemptions for some dead or imminent-hazard trees and requires supporting tree information for a standard permit application.
Application details
What Cambridge requires for a regulated private tree
- Cambridge’s private-tree rule has a clear 20 cm trigger, but the permit path changes with tree count, tree condition and whether compensation is handled by replanting or cash-in-lieu.
A permit is required to remove, cut down or otherwise injure a private tree 20 cm DBH or larger, measured 1.4 m above ground. The City says this private-tree permit stream applies to removal of 1–9 trees across land-use types, including single-family residential property.
The permit instructions use 1.4 m; the same page’s general DBH definition says approximately 1.37 m. Ask the City which point to use, especially if the tree is close to 20 cm.
For removal of 10 or more trees over the 20 cm threshold, Cambridge directs applicants to the Site Alteration Permit process instead of the standard private-tree permit.
The City currently lists a $64.98 permit fee and requires a qualified tree professional’s arborist assessment, clear photos and, where applicable, adjacent-property-owner consent for trees near a boundary.
Cambridge publishes exemptions for dead trees and trees posing an imminent hazard. The City tells applicants not to use the standard permit application when an exemption applies and requires the prescribed evidence or notification for the exemption route.
As part of the standard review, the applicant identifies the compensation method: qualifying replacement planting, cash-in-lieu, or a combination. Any required cash-in-lieu payment is made before the permit is issued.
Submitting an application does not authorize removal. Cambridge expressly tells owners not to injure or remove the tree until the permit has been issued.
Before work starts
- Ownership: check the property line. Public and boundary trees may follow a different process.
- Site context: review any development approval, covenant or protected-area conditions.
- Work requirements: confirm any permit, exemption or protection requirements that apply to the planned work.
Official sources
Primary municipal source reviewed October 1, 2026. Rules can change; confirm with the local authority before work. How we research