Common Questions

Trees and Plants in the Neighborhood

Here in the City of Trees, our urban forest occasionally gives rise to conflicts between neighbors and between citizens and the city. Some of the laws applying to trees are a bit surprising, like the fact that trees can also be a fence, and that property owners are responsible to fix the sidewalk along their property – even if a city tree causes the damage.

Heritage trees and other special protections

Generally, property owners can plant, prune, and remove trees on their own property without a permit. (City of Sacramento Public Works Department, “Tree Questions.”) However, “Heritage Trees” are specially protected in the City of Sacramento, even on private property.  The County of Sacramento similarly protects what it terms “Landmark trees” and all native oak trees. (Sacramento Planning and Environmental Review, “Tree Removal and Pruning.”) Similar ordinances are in place in Rancho Cordova, Elk Grove, and Citrus Heights, and other cities and counties throughout California.

The City of Sacramento passed a Heritage Tree Ordinance, Chapter 12.64 of the City Code, in order to protect specific specimens of trees. The county’s equivalent code section is Tree Preservation and Protection, Chapter 19.12 of the County Code.

In the City of Sacramento, trees are considered Heritage Trees if the following applies:

  • The tree has a trunk circumference of one hundred (100) inches or more, is of good quality in terms of health, vigor of growth and conformity to generally accepted horticultural standards of shape and location for its species.
  • The tree is a native species with a circumference of thirty-six (36) inches or greater and in good quality in terms of health, vigor of growth and conformity to generally accepted horticultural standards of shape and location for its species.  Protected native species include the following: valley oak, interior live oak, blue oak, coast live oak, California sycamore, and California buckeye.
  • The tree is thirty-six (36) inches in circumference or greater in a riparian zone. The riparian zone is measured from the centerline of the water course to thirty (30) feet beyond the high water line.  Species include: cottonwood, willows, boxelders, and alder.
  • The tree is part of a grove of trees or woodland trees designated by resolution of the city council to be of special historical or environmental value or of significant community benefit.

In the County of Sacramento (unincorporated areas), all living native oak trees with a girth of sixty (60) inches or greater are designated Heritage Trees, while a “Landmark Tree” is “an especially prominent or stately tree on any land in Sacramento County.”

Pruning and removal of Heritage and Landmark Trees require a permit.  In the City of Sacramento, these are issued by the Department of Transportation’s Urban Forestry Services (permit information and application). The County Department of Planning and Environmental Review handles the permits on unincorporated land (permit information and application).

Don’t take the matter into your own hands! Chapter 12.64.070 of the City Code, makes it a misdemeanor to violate the Heritage Tree code. Punishment is a fine of up to $1000, up to 6 months in jail, and potential administrative penalties  up to $25,000 per violation. Chapter 19.12.210 of the County Code makes a violation both a misdemeanor and a nuisance and imposes similar penalties.

When neighbors’ plants encroach

Branches and roots from plants on one property that encroach on a neighbor’s property are generally considered a legal nuisance. The injured party may start a civil action or “abate the nuisance” themselves. In the case of encroaching limbs or roots, abating the nuisance usually means that you can trim them back to the property line. Cal. Civ. Code § 3502.

You cannot enter the neighboring property without giving reasonable notice, even if that means you can’t abate the nuisance, Cal. Civ. Code § 3503, and you must not cause a breach of the peace or unnecessary injury to the plant.

If the encroaching plant is a tree, before taking action, make sure that it is not protected by Heritage Tree or similar status– you could be committing a misdemeanor by trimming branches or roots without a permit.

Some plants are notoriously bad neighbors, well-known for their vigorous, almost-uncontrollable growth. Bamboo, particularly the “running” varieties, spreads through underground rhizomes which can be very difficult to control; other plants, like blackberries and morning glories, can also pose a problem. If uncontrolled, these plants can easily invade neighbors’ yards.

In the case of bamboo, preventing the spread may require creating a root barrier, preferably on the bamboo owner’s side of the property line. If the bamboo-owning neighbor is not willing to build this barrier, a nuisance case in small claims court may be required to force them to take action. (The barrier, which must be waterproof, may itself cause a nuisance if it diverts water drainage onto a neighbor’s property, so anyone installing one should consult an experienced contractor.)

With tall plants such as bamboo, another issue may come into play. If the plants are close enough together to form a barrier, and run along the property line, they might be considered a fence. In Wilson v. Handley, 97 Cal. App. 4th 1301 (2002), an appeals court ruled that “[a] row of trees planted along or near the property line between adjoining parcels to separate or mark the boundary between the parcels is a ‘structure in the nature of a fence’” and can be regulated as such.

There may be both state and local laws controlling fences. If the fences are erected maliciously with the intent to annoy neighbors, they are prohibited by state law (Cal. Civil Code § 841.4) and Sacramento City Code (§ 9.16.070). In Wilson v. Handley, the court found that a line of trees could be considered a “structure in the nature of a fence” for this purpose. State and local building codes may also regulate the height and placement of fences.

More information about encroaching trees and vegetation can be found in Neighbor Law: Fences, Trees, Boundaries & Noise, by Emily Doskow and Lina Guillen, from Nolo Press.

Trees vs. solar panels

Both trees and solar panels provide environmental benefits, but in some cases, they may not easily co-exist. If trees grow to block the sun from reaching solar panels, the panels may be rendered useless. California law attempts to encourage both trees and solar installations by setting out a way to settle such conflicts.

In 1978, California passed the Solar Shade Control Act (Public Resources Code 25980-25986). California is one of the only states in the country with a law specifically governing this topic. The law was intended to encourage the planting of trees and shrubs to create shade and moderate temperature, and to support the use of alternative energy devices such as solar energy collectors.

The Solar Shade Control Act applies only to fixed solar collection devices installed on the roof of a building, or on the ground if rooftop installation is impossible. If installed on the ground, very specific height and set-back restrictions apply. Improperly installed solar devices are not protected by this law.

Under this law, property owners are prohibited from allowing their trees or shrubs to shade more than 10% of a neighbor’s existing solar energy system between the hours of 10am and 2pm. Any tree or shrub planted before the installation of the solar collector is exempt. If a pre-existing tree dies, its replacement is also exempt, even if the replacement is planted after the solar collector’s installation. The law also exempts trees and shrubs planted on timberland or commercial agricultural land.

The state law also allows local governments to exempt themselves from the Solar Shade Control Act by way of a local ordinance. These exemptions apply only to trees and shrubs planted and maintained by the local government, not to privately owned trees. Sacramento County has exempted all unincorporated parts of the county from this law. Many local cities, including Sacramento, Rancho Cordova, and Citrus Heights have also exempted themselves from the law. Others, such as Davis, have exempted themselves from the state law, and instead adopted a local ordinance on the topic.

Under Public Resources Code section 25983, a tree owner who fails to remove or alter a tree or shrub after receiving a written request from the owner of the affected solar collector is committing a private nuisance, as defined in California Civil Code section 3481. The solar collector’s owner may pursue a civil suit against the tree owner for abatement of the nuisance.

If you’d like more information about this law, including a detailed explanation of the exceptions, related case law, and questions to ask yourself when determining if there’s been a violation of the California Solar Shade Control Act, consider reading this excellent article: Scott Anders, Taylor Day & Carolyn Adi Kuduk, Hey, Your Tree Is Shading My Solar Panels”: California’s Solar Shade Control Act, 2 Journal of Sustainable Real Estate 361–381, 361-381 (2010).

Who repairs tree damage to sidewalks?

People are often surprised to learn that property owners are responsible for repairing defective sidewalks adjacent to their property, even if the damage is caused by publically-owned trees (Cal. Streets and Highways Code section 5610). Usually they learn this when they receive a notice from the city or county ordering them to repair the sidewalk.

This law is based on a Depression-era measure (Stats. 1935 Ch. 771, § 2, p. 2148) shifting the cost of repairs from cash-strapped governments to the owners of land “fronting on any portion of a public street, avenue, alley, court, or lane, or place” to maintain “any sidewalk, curbing or park or parking strip, bulkheads, retaining walls, or other works” in a non-dangerous condition that does not interfere with public convenience in using the space. (If the condition is lawfully created by another party, that party is responsible instead.) The current law provides for the same, in less florid language. Most states and major cities have similar laws.

Not all cities take advantage of this law, and some cities voluntarily take on either part or all of the cost, particularly when the damage is caused by city trees. The City of Sacramento, however, imposes the entire repair cost on the property owner regardless of the cause of any damage or displacement. (Sacramento City Code 12.32.020 Owner’s duty to repair defective sidewalk).

Part of the reasoning is that although homeowners do not pay (directly) for the cost of installing and maintaining city trees, they do receive the benefits of aesthetics, cooling and increased property value from the trees. Thus it is fair to place the cost of maintaining sidewalks on them.

For more on property owners’ obligation to repair sidewalks, see Gerald C. Hicks, Supervising Deputy City Attorney, Sacramento, League of California Cities 2014 Spring Conference (May 8, 2014) But It’s Your Sidewalk! Sidewalk Repair and Liability.

For more information

One self-help book with a helpful discussion of tree issues is the 7th edition of Neighbor Law: Fences, Trees, Boundaries & Noise, published by Nolo. Nolo Press is a Berkeley-based publishing house that specializes in self-help law books written with the layperson in mind. A more in-depth look, focusing on California’s neighbor law, is Neighbor Disputes: Law and Litigation from CEB Publishing. It has a chapter devoted to tree issues. You can find both of these books at the Sacramento County Public Law Library.


“Off the Path” image courtesy of Janice Marie Foote. No changes made.