Fences and gates Sunnyvale

Sunnyvale fences, from Eichler courtyards to corner lots with two front yards

Sunnyvale lets a side or rear fence reach 8 feet with no planning permit, but its Building Division wants a permit once a fence passes 7 feet, measured from the lower ground, and lattice counts in the total. Toward the street the limits drop: 4 feet in a front yard without review, 3.5 feet inside a corner or driveway vision triangle, and on a corner lot a second, reducible front yard along the longer street.

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  • Rules on this page checked against 12 public sources, October 2026
Side and rear lines
8 feet with no planning permit; building permit past 7
Front yard
4 feet without review; 4 to 6 feet takes a Miscellaneous Plan Permit
Vision triangles
3.5 feet; corner legs 40 feet, driveway legs 10 feet
Fence on a retaining wall
Building permit whatever its height

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Free to request, and you agree the scope and price with the person you hire before work starts. In California, a job over $1,000 in labor and materials, or one that needs a building permit, must be done by a contractor licensed by the CSLB in the right class. Ask for the license number and check it at cslb.ca.gov.

Historic Murphy Avenue in downtown Sunnyvale
Historic Murphy Avenue in downtown Sunnyvale. Photo: The Sands of Time 0, CC BY-SA 4.0, via Wikimedia Commons.
A white wooden picket fence with an open gate in front of a white weatherboard house
A white wooden picket fence with an open gate in front of a white weatherboard house. Photo: Jorge Royan, CC BY-SA 3.0, via Wikimedia Commons.

The houses here

Eichler courtyards, heritage lawns and corner lots

Sunnyvale's fence lines come in a few distinct kinds. In the Eichler tracts, the city's 2009 guidelines note that some models had a front privacy fence designed as part of the house, and they allow concrete block fencing where the subdivision already has it. In the Taaffe-Frances Heritage Neighborhood, the 2009 design guidelines describe front lawns, with low fences and plantings along the side property lines separating one lot from the next. Across the city, corner lots carry a second front yard, which the Planning Division calls the reducible front yard, along the longer of the two street frontages. And in tracts with a homeowners association, the city's fence handout asks owners to read the CC&Rs before planning a new fence.

Free, no obligation. Next, add your details in the request form.

The work

Five Sunnyvale fence jobs and the line each one crosses

  1. Adding lattice to a back fence

    A side or rear fence may reach 8 feet before Planning gets involved, and lattice counts toward that height. The two divisions measure differently, though. Planning takes height from the highest adjoining grade, while the Building Division measures from the lowest, and requires a building permit once a fence passes 7 feet. On a back line where one yard sits lower than the other, a fence that reads 7 feet from the high side can need a permit from the low one.

  2. The street side of a corner lot

    Along the reducible front yard a fence up to 6 feet needs no planning permit. Between 6 and 8 feet it stays permit-free only if it steps back 2 feet from the property line for each foot above 6, so a 7-foot fence sits 2 feet in; otherwise it takes a Miscellaneous Plan Permit. Nearer the corner, a triangle with 40-foot legs, measured from where the extended front property lines meet, holds everything to 3.5 feet.

  3. A front fence beside the driveway

    Sunnyvale treats everything between the face of the house and the street as front yard. A fence there may reach 4 feet without review, while 4 to 6 feet takes a Miscellaneous Plan Permit and anything taller a Use Permit. Where the inside edge of the sidewalk meets the driveway, a triangle with 10-foot legs is held to 3.5 feet. An open fence, up to 4.5 feet with posts at least 8 feet apart and the part above 3.5 feet no more than half solid, may stand inside a triangle.

  4. A fence riding on a retaining wall

    Where a back line steps up, the boards often sit on a low retaining wall. Sunnyvale exempts retaining walls up to 4 feet from a building permit only when nothing else is attached to them, fencing included, and the fence handout spells out the consequence: a fence on top of a retaining wall needs a building permit regardless of height. That turns a simple board replacement on a terraced lot into a permitted job, with plans and inspections.

  5. Rebuilding the run along the sidewalk

    Where the sidewalk runs right against the curb, a front fence can go to the property line, which the city says is typically 11 feet back from the curb edge, or 5.5 feet from the sidewalk edge. Where a planting strip separates sidewalk and curb, the fence may be built to the edge of the sidewalk. Either way, a fence standing in the public right-of-way may have to come out if the city needs access.

Permits and local rules

Sunnyvale papers a fence quote should follow

  1. Residential Fences handout

    The Planning Division reviews a fence's location, material and design, and the Building Division its construction. A Miscellaneous Plan Permit decision can be appealed to the Planning Commission within 15 days, and both planning and building applications ask for the homeowners association's approval letter where one exists. A fence that needs a building permit gets two inspections, the first after the post holes are dug, and fasteners in preservative-treated wood must be hot-dipped galvanized steel, stainless steel, silicon bronze or copper.

    Source: City of Sunnyvale Planning and Building (sunnyvale.ca.gov)

  2. Work not requiring a building permit

    The Building Division's list, current from January 1, 2026 and based on Section 105.2 of the 2025 California Building Code, exempts fences up to 7 feet, except swimming pool barriers, with a note that Planning approval may still be needed depending on where the fence stands. Retaining walls up to 4 feet are exempt only when no other structure, fencing included, is attached. An exemption never authorizes work that breaks the codes or other city laws.

    Source: City of Sunnyvale Building Division (sunnyvale.ca.gov)

  3. Section 3.5.4 of the Eichler Design Guidelines

    Adopted on July 28, 2009, the guidelines ask that fences fit the house. Their own numbers differ from the citywide handout: they send fences over 3 feet to the Planning Division and set fences of 6 feet or more at least 15 feet back from the front property line. They favor simple wood without lattice, keep the original privacy fences some models were designed with, and allow concrete block where the subdivision already has it. In a listed tract, ask Planning which height threshold it applies.

    Source: City of Sunnyvale, Eichler Design Guidelines (sunnyvale.ca.gov)

  4. Where the old boards and posts go

    The city's disposal guide sends untreated lumber and fencing to On-Call Collection, the bulky pickup, for loads within 1 cubic yard and pieces no longer than 6 feet, or to drop-off sites such as the SMaRT Station on Carl Road, which takes clean wood and construction debris for a fee. The SMaRT Station refuses treated wood fencing. Small, separated loads of treated wood from a household go to the county's hazardous waste program by appointment; larger loads, to a landfill approved for treated wood, such as Newby Island.

    Source: City of Sunnyvale Recycling and Garbage (sunnyvale.ca.gov)

State license for this work: C-13 Fencing, C-29 Masonry. Look up a contractor's license on the CSLB website (cslb.ca.gov).

Part by part

Two Sunnyvale neighborhoods with fence guidance of their own

  • The Eichler neighborhoods

    The guidelines reach exterior changes to houses Joseph Eichler built after 1950 and to any other house inside the neighborhoods mapped in their appendix. Sunnyvale's Eichlers went up from the 1940s into the mid-1970s, and where a model was designed with a front privacy fence, the guidelines want it kept or rebuilt. In most cases they call plain wood without lattice the right design.

  • Taaffe-Frances Heritage Neighborhood

    Laid out in 1925 and 1927 on the 500 blocks of Taaffe and Frances streets and the west side of Murphy Avenue, it holds 59 houses and two duplexes on lots of 5,000 or 6,500 square feet, most built in the 1930s and 1940s. Its guidelines describe lawns out front and low side fences and plantings between lots, a pattern that a front-yard fence of 4 feet or less keeps without Planning review.

Timing

Work hours, the post-hole inspection and the 811 ticket

Under Municipal Code Section 16.08.030, a hired crew may work from 7 a.m. to 6 p.m. on weekdays and 8 a.m. to 5 p.m. on Saturday, with no construction on Sundays or the holidays when City offices close; the hours and a contact must be posted at the site entrance. An owner rebuilding their own fence at a detached house gets longer hours, Sundays included, with up to two unpaid helpers. On a permitted fence, schedule the post-hole inspection as soon as the holes are dug, and call 811 at least two working days before digging.

Before you hire

What to settle with a Sunnyvale fence pro

  • Ask them to measure the new height from the lowest adjoining grade, lattice included, so a building permit past 7 feet is not missed.
  • On a corner lot, ask which frontage is the reducible front yard and how far back any fence over 6 feet will sit.
  • If the fence sits on a retaining wall, ask who will pull the building permit Sunnyvale requires at any height.
  • Ask which fasteners will hold the pressure-treated rails; the city names hot-dipped galvanized, stainless steel, silicon bronze or copper.
  • Ask how the old posts will leave, since the SMaRT Station turns treated wood fencing away.

Free, no obligation. Next, add your details in the request form.

Questions

Sunnyvale fence questions, answered from city handouts

Can my back fence in Sunnyvale be 8 feet tall?

Yes, on side and rear lines, with no planning permit. Past 7 feet you need a building permit, and for that the Building Division measures from the lowest adjoining grade, with any lattice counted in the height. Anything over 8 feet needs a Use Permit as well as a building permit. If an association governs the lot, its approval letter goes with the application.

Which side of my Sunnyvale corner lot is the reducible front yard?

The longer of the two street frontages. The other frontage is the regular front yard, where a fence over 4 feet needs review. Along the reducible front yard you may build 6 feet without a planning permit, and up to 8 if the fence steps back 2 feet for each foot above 6. Near the corner, the 40-foot vision triangle still caps everything at 3.5 feet.

Can an old chain link front fence in Sunnyvale be replaced with new chain link?

Not in the front yard or the reducible front yard of a residential lot. Sunnyvale's zoning code has barred new chain link fences there since January 1, 2010. Side and rear yards are not covered by that ban, though barbed wire, razor wire and electrically charged fences are prohibited on or next to any residential use. A low wood fence up to 4 feet is the simplest permit-free replacement out front.

Does a hedge count as a fence in Sunnyvale?

It can. The zoning code says vegetation may be treated as a fence, and the city's handout holds hedges and other natural or built objects to the same height limits as front and reducible front yard fences. Inside a vision triangle, plants and structures alike stop at 3.5 feet, with exceptions for slim trees whose lowest branches will sit at least 10 feet up when grown.

Our homeowners association has its own fence rules. Which ones win?

Both apply. The city's handout tells owners in an association to read the CC&Rs and consult the association for extra restrictions, and both a Miscellaneous Plan Permit application and a building permit application ask for the association's approval letter where there is one. The association can be stricter than the zoning code, but it cannot approve a fence the code forbids, such as chain link out front.

Where these facts come from

Checked against these public sources in October 2026. Rules and programs change: confirm permit requirements with the city before work starts, and a contractor's license on the CSLB website.

Fence and gate work in Sunnyvale? Tell us what you see.

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