Under California Civil Code section 841, often called the Good Neighbor Fence Act, adjoining owners are presumed to benefit equally from the fence on their boundary and to be equally responsible for the reasonable cost of building, maintaining and replacing it. The owners can agree in writing to something different.
This page is general information, not legal advice. For a dispute, talk to a lawyer or your city.
Do I have to pay for half of my neighbor's new fence?
Possibly, if it is a boundary fence and the neighbor follows the statute. Section 841 requires 30 days' written notice before the cost is incurred. The notice has to state the presumption of equal responsibility, describe the problem, the proposed fix, the estimated cost, the proposed split and the timeline. Without that notice a neighbor has no basis to make you pay for half. The law also lets a court change the split if equal shares would be unjust, for example where the cost is far greater than the benefit to one owner, or where it would cause financial hardship.
Who owns the fence between our two yards?
Location decides it. A fence wholly on one lot is that owner's property. A fence on the boundary is treated by section 841 as serving both. Many tract fences in San Jose were put on the line by the builder decades ago, but lines and fences drift apart over repeated rebuilds. A survey answers the question of who owns the fence for certain.
Can the neighbor build a fence without asking me?
On their own land, yes, within city height and permit rules. What they cannot do is put up a boundary fence without asking me and then send a bill, because the 30-day written notice has to come first. And a fence over 10 feet built for no reason except to spite a neighbor is a private nuisance under Civil Code section 841.4.
The survey shows the fence is on the wrong side of the line. What should we do?
Start with a conversation and the survey map. Neighbors usually either move the fence to the true line at the next rebuild or record a written agreement allowing it to remain. Because a fence that has sat off the line for many years can raise legal questions about the strip of land, a real estate attorney should review whatever you sign. If the fence is to move, we build to the surveyor's marks.
A contractor built my new fence over the line onto the neighbor's lot. Who corrects it?
If the contractor chose the location, or ignored marked pins, the contractor should move it at their cost. Ask in writing. If you directed where it went, the responsibility is harder to place on them. This is why a careful estimate records where the fence will stand and who identified the boundary. When a licensed contractor will not fix their error, the Contractors State License Board accepts complaints.
We agreed to share the cost. How does the billing work?
Write a one-page agreement before work begins. It should give the location, material, height, the total and the amount each household pays. That written agreement is also what replaces the equal split the statute presumes. On our side, the estimate can show the shared stretch separately and divide it, so each owner has the same document.
Next door is a rental and I cannot reach the owner. May I build on my own side?
Yes. A fence entirely on your property needs no consent from the neighbor, only compliance with city rules. Have the line marked so you know you are inside it. If you would prefer a shared boundary fence, send the section 841 notice by mail to the owner's address of record and keep proof of mailing.
The fence is rotted, it is on our side, and the neighbor will not pay. Can we tear it out and rebuild?
If it is truly inside your lot, it is yours to replace. If it is on the boundary, give the 30-day written notice before removing it, whatever the neighbor has said so far. Owners who believe they are owed a share generally use small claims court. The Santa Clara County Superior Court runs a self-help center that explains the process, or you can ask a lawyer.
The neighbor's tree roots are lifting the fence. Whose problem is it?
It is two problems. The tree is one, and an arborist should see it before any major root is cut, because cutting can kill or topple a tree and many South Bay cities protect large ones. The fence is the other. We can frequently span a root by widening the space between two posts and holding the bottom of the boards above it.
The business behind us stacks material on our chain link fence and it is bowing. Can you strengthen it?
To a degree. Heavier posts, a bottom rail and a tension wire all stiffen chain link. None of that turns a fence into a wall that can hold a load. Write to the business and ask that the material be pulled back. If nothing changes, report it to code enforcement in your city.
For a price on your own fence line, book the free site visit. We measure, then send the quote in writing. Call (408) 539-3039.