Fence Companyin El Cajon, CA
A fence company in El Cajon works to one height rule: 42 inches anywhere on a lot, including the front yard, and 6 feet behind the required front yard line. Barbed, razor and concertina wire, corrugated metal, plastic and tarps are banned, and a taller fence needs an administrative zoning permit with 10 days' neighbor notice.
Most El Cajon fences mark a lot that was subdivided in the postwar boom. Wikipedia, a third-party source, puts the city's population at 5,600 in 1950 and 37,618 in 1960, and the Census Bureau's ACS 2024 one-year estimates count 14,955 detached houses among 33,340 housing units, with 64 percent of all units built between 1950 and 1979. Another 38.3 percent of units sit in buildings of five or more units, where fences and gates are often a landlord's job: 55.5 percent of the city's occupied homes are rented. After seven decades, the City's property maintenance chapter makes fence upkeep an owner duty.
On a fence job, MDG Builders (CSLB #1040337) surveys the lot, checks the zoning limits and schedules the work, and licensed subcontractors build it: a C-13 fencing contractor for wood, metal and similar fences, and a masonry contractor for block walls. Our fencing page holds the sourced prices and the El Cajon overview covers every trade here. The City's official code site returned errors to our tools, so the code text below comes from GoCodebook, a third-party mirror that adds AI summaries. Check each rule against the official code and with the City before you build, because a summary can drift from the text. Bostonia and Fletcher Hills straddle the city line, so we write about El Cajon's Bostonia area, and an unincorporated address such as Granite Hills follows County of San Diego rules instead.
What El Cajon's zoning code says about fences and walls
Where fencing permits come from in El Cajon: City of El Cajon Community Development Department, Building and Fire Safety Division.
- Section 17.130.170 lets a 42 inch wall, fence or hedge stand on any part of a lot, and a 6 foot fence, wall or hedge go behind the required front yard line; on a reverse corner lot anything over 42 inches must stay at least 10 feet from the side exterior property line. Open bar metal fencing up to 6 feet is allowed anywhere if the bars are at least 4 inches apart, and posts or columns up to 6 feet are allowed at 8 foot spacing and 16 inches wide at most.
- El Cajon bans barbed, razor and concertina wire, corrugated metal, plastic, tarps and electrified wire as residential fence materials (section 17.130.170). Electric theft-deterrent fences are allowed only in C-M and M zones with an administrative zoning permit, and section 17.130.220 bans barbed wire in residential areas except for specific listed cases such as livestock enclosures.
- Corner lot visibility rules apply to every fence: section 17.130.090 sets corner triangles with 15 foot legs where nothing above 42 inches may stand, and section 17.130.210 bars any fence, wall or hedge that blocks pedestrian or vehicle visibility.
- For retaining walls, section 17.130.200 requires at least 3 feet of horizontal separation between multiple walls, lets a fence of the height otherwise allowed top a retaining wall at a cut, and counts the retaining wall height toward the allowed fence height at a fill, except that an openwork fence up to 42 inches (solids no more than 60 percent of the face) may still be added.
- The director of community development can approve a fence, hedge or wall higher than the zone allows through an administrative zoning permit when there is a legitimate need, weighing safety, sight distance, aesthetics and neighbor input, and must notify adjoining owners in writing at least ten days before approval (Municipal Code 17.40.020(C)). A wall or hedge that creates a sight-distance hazard cannot be approved (17.40.040).
- The state list of permit-exempt work (Residential Code R105.2, as excerpted by the City of Albany from the 2025 code) exempts fences not over 7 feet high and retaining walls not over 4 feet measured from the bottom of the footing, unless the wall supports a surcharge. El Cajon's residential code chapter does not amend R105.2, but the zoning heights above still apply.
- Municipal Code 15.16.130(B) says fencing, where installed, shall be maintained in good condition, and the City's substandard property rules in 15.16.050 list broken windows and neglected premises as conditions the building official can enforce through the notice and abatement process in Chapter 15.16.
- Under California Civil Code 841, adjoining owners are presumed to share equally in the reasonable cost of building, maintaining or replacing a fence that divides their properties unless they agree otherwise in writing, and an owner who plans such work must give each affected neighbor 30 days' written notice with the problem, the proposed fix, estimated costs, the cost-sharing proposal and a timeline.
How tall can a fence be in an El Cajon front yard, side yard or backyard?
Section 17.130.170 of the zoning code gives two numbers. A wall, fence or hedge of 42 inches may stand on any part of a lot, including the front yard, and a 6 foot fence, wall or hedge may go behind the required front yard line. We found no separate 7 foot or 8 foot allowance for backyards, so a taller fence needs the approval path in the permit section below. In the RS-6 single-family zone the required front yard is listed at 20 feet, but the table reached us through a summary, so have the fence company measure from a survey, not from the porch.
Open metal fences get more room. Bar fencing of metal up to 6 feet is allowed anywhere if the bars are at least 4 inches apart, and posts or columns up to 6 feet are allowed at 8 foot spacing and 16 inches wide at most. An iron or steel picket fence at the front can therefore reach 6 feet where a solid wood fence would stop at 42 inches. Hedges follow the same two numbers, so a privacy hedge in the front yard is capped as well.
- Solid wall, fence or hedge anywhere on the lot, front yard included: 42 inches
- Behind the required front yard line: 6 feet
- Open bar metal with bars at least 4 inches apart: up to 6 feet anywhere
- Posts or columns: up to 6 feet at 8 foot spacing, 16 inches wide at most
Ask the fence company to quote the height by code section, then confirm it with Planning.
What changes on an El Cajon corner lot or at a driveway gate?
Visibility rules apply to every fence on a corner. Section 17.130.090 sets corner triangles with 15 foot legs where nothing above 42 inches may stand, and section 17.130.210 bars any fence, wall or hedge that blocks pedestrian or vehicle visibility. On a reverse corner lot, anything over 42 inches must also stay at least 10 feet from the side exterior property line. A 6 foot fence that runs to the corner on an interior lot may therefore have to stop short, step down to 42 inches or switch to an open design.
Driveway gates raise a different question. Section 15.56.070 asks for fire apparatus roads at least 20 feet wide, or 16 feet for a single-family driveway up to 150 feet long that serves no more than two dwellings, with at least 13 feet 6 inches of vertical clearance. We read nothing about gates in that section, so check a gate across a long or shared driveway with Heartland Fire & Rescue before the order goes in.
Mark the corner triangle on the survey before choosing a design.
Which fence materials are banned in El Cajon, and can the City make me repair a fence?
The ban list is specific. Section 17.130.170 bars barbed, razor and concertina wire, corrugated metal, plastic, tarps and electrified wire as residential fence materials, and section 17.130.220 bans barbed wire in residential areas apart from listed cases such as livestock enclosures. Electric theft-deterrent fences are allowed only in C-M and M zones with an administrative zoning permit. We cannot tell from the summary whether engineered vinyl panels count as plastic, and we could not see how the code treats chain link, so ask Planning about both before ordering either.
Upkeep is the owner's job and the City can enforce it. Municipal Code 15.16.130(B) says fencing, where installed, shall be maintained in good condition, and 15.16.050 lists broken windows and neglected premises among conditions the building official can pursue through notice and abatement. A landlord's sagging fence can reach the same process, and section 15.16.200 lets the City report rental violations left uncorrected for six months to the State Franchise Tax Board.
If the home is a rental, put fence repair on the written maintenance list.
Do I need a permit for fence installation in El Cajon, and who must be told?
A building permit is not the first hurdle. The state list in Residential Code R105.2, as excerpted by the City of Albany from the 2025 code, exempts fences not over 7 feet and retaining walls not over 4 feet measured from the bottom of the footing unless the wall supports a surcharge, and El Cajon's residential chapter does not amend that item. The City's own heights are lower than 7 feet, so the 6 foot line behind the front yard is the number that matters. We found no El Cajon fence permit page or fee, so we print none and suggest a call to the Building and Fire Safety Division.
A taller fence takes an administrative route. The Director of Community Development can approve a fence, hedge or wall higher than the zone allows through an administrative zoning permit when there is a legitimate need, weighing safety, sight distance, aesthetics and neighbor input, and must notify adjoining owners in writing at least ten days before approval (Municipal Code 17.40.020(C)). A wall or hedge that creates a sight-distance hazard cannot be approved under 17.40.040. Build the notice period into the schedule before a crew is booked.
Ask whether your lot needs the administrative permit before materials are ordered.
What rules apply to a retaining wall or a fence on a hillside lot in El Cajon?
A fence on a slope is a retaining wall question first. Section 17.130.200 requires at least 3 feet of horizontal separation between multiple walls and lets a fence of the normal allowed height top a retaining wall at a cut. At a fill, the retaining wall's height counts toward the allowed fence height, except that an openwork fence up to 42 inches, with solids no more than 60 percent of the face, may still be added. A stepped fence on a terraced lot can therefore be taller or shorter than it looks, depending on which side is cut and which is fill.
The Hillside Overlay (H) zone adds engineering. Chapter 17.170 caps cut and fill slopes at 2:1 and 30 feet, requires fill to be compacted to at least 90 percent and calls for a geotechnical report from a certified engineering geologist or licensed geotechnical engineer, including for retaining walls in areas of known geological hazard. Excavation of 50 cubic yards or less and under 1 foot deep is exempt. We could not tell which El Cajon streets carry the H overlay, so ask Planning. Block walls are masonry, CSLB class C-29, since the C-13 fencing class excludes masonry walls.
What fence and setbacks does a swimming pool need in El Cajon?
The zoning code controls where the pool goes and state law controls the barrier. Section 17.130.230 bars pools, spas and hot tubs from a required front or exterior side yard and requires at least 3 feet from rear and interior side property lines, equipment included. California Health and Safety Code 115922 requires at least two of seven drowning-prevention features when a permit is issued for a new or remodeled pool, and the enclosure must meet section 115923.
We did not read section 115923, so we print no barrier height or latch rule, and we read no El Cajon pool barrier ordinance. The height table above still applies to the fence that carries the barrier, which matters in a front or street side area where only 42 inches is allowed. Ask whether a taller barrier there needs the administrative permit, and have the pool builder, the fence contractor and Planning work from one drawing before anything is built.
How much does fence installation cost in El Cajon, and who pays for a shared fence?
We found no El Cajon or San Diego price survey, so these are Los Angeles sources. Angi's August 4, 2026 Los Angeles page shows $15 to $60 per foot with $29 as the average and $2,100 to $2,350 for 100 feet, HomeGuide shows $20 to $60 per foot and Thumbtack $23 to $57 across all types. A federal wage survey puts the Los Angeles area fence erector at a mean $28.00 an hour for May 2025, which checks labor, not price. We plan around $25 to $55 per linear foot installed for a 6 foot wood or vinyl privacy fence, $35 to $85 for aluminum or ornamental iron and roughly $2,500 to $5,500 for a 100 foot backyard run. We found no independent per-foot price source for block walls, so none is printed.
Civil Code 841 treats a fence between two lots as a shared expense by default: adjoining owners are presumed to split the reasonable cost equally unless they agree otherwise in writing, and an owner who plans the work gives each neighbor 30 days' written notice with the problem, the fix, estimated costs, the cost-sharing proposal and a timeline. Fencing is CSLB class C-13. Our contractor license guide shows how to verify one, and how general contractors use subcontractors explains who answers for what.
Fence photos from El Cajon and nearby communities
Fencing scenes tied to El Cajon places such as Bostonia, Cajon Heights and Fletcher Hills, and to nearby communities such as La Mesa and Santee, from open iron fronts and cedar backyards to stepped hillside runs and pool barriers.
Where these El Cajon fence figures come from
Every fence price and its source sits in the table on our fencing page. A new fence often goes up beside other work, and the El Cajon rules for it are on the roofing page, the painting page and the kitchen remodeling page. To see how other cities set their limits, read the fencing guides for Glendale, Irvine and Dana Point.
| What it covers | Typical range |
|---|---|
| Wood or vinyl privacy fence, 6 feet | $25 to $55 per linear foot |
| Chain-link | $12 to $30 per linear foot |
| Aluminum or ornamental iron | $35 to $85 per linear foot |
| Typical 100-foot backyard run | $2,500 to $5,500 total |
| Block walls, horizontal slat fences, gates and openers, hillside lots | Set by the written proposal |
El Cajon fence questions, answered
How much does it cost to have 100 feet of fence installed?
Plan on roughly $2,500 to $5,500 for 100 feet of 6 foot wood or vinyl privacy fence, a range we built from Angi, HomeGuide, Thumbtack and Fixr data. Angi's Los Angeles page alone shows $2,100 to $2,350. Gates, old fence removal and slopes change the number, and no El Cajon survey turned up.
Do I need a permit for fence installation in El Cajon?
Not a building permit for a fence up to 7 feet, under the state exempt list that El Cajon does not amend, but zoning limits still apply: 42 inches anywhere on a lot and 6 feet behind the front yard line. A taller fence needs an administrative zoning permit. Confirm your lot with Building and Fire Safety and Planning.
Can I put up a 7 foot fence in El Cajon?
Only by approval. The zoning height behind the front yard line is 6 feet, so a 7 foot fence needs an administrative zoning permit, which the Director may grant for a legitimate need after weighing safety, sight distance, aesthetics and neighbor input, with 10 days' written notice to adjoining owners. A sight-distance hazard cannot be approved.
Can I put a privacy fence in my front yard?
Not a solid one above 42 inches. A solid wall, fence or hedge in the front yard stops at 42 inches, while open bar metal fencing with bars at least 4 inches apart may reach 6 feet anywhere. Corner lots add a 15 foot triangle where nothing above 42 inches may stand.
What is the maximum height for hedges in El Cajon?
The same as walls and fences: 42 inches anywhere on a lot, including the front yard, and 6 feet behind the front yard line. A hedge that blocks pedestrian or vehicle visibility is barred by section 17.130.210 even inside those heights, so check the corner triangle first.
Does my neighbor have to pay for half the fence in California?
Often, but not automatically. Civil Code 841 presumes adjoining owners share equally in a reasonable fence cost unless they agree otherwise in writing, and an owner who plans the work must give 30 days' written notice. Neighbors can agree to something else, so talk first and put the deal on paper.
Is it cheaper to install a wood or vinyl fence?
Wood is cheaper at the low end, but the ranges overlap. On Angi's national page, updated October 13, 2026, wood runs $10 to $45 per foot and vinyl $15 to $40. In El Cajon we could not tell whether vinyl counts as banned plastic, so ask Planning before ordering it.
What is the maximum height of a retaining wall without a permit?
The state exempt list covers retaining walls up to 4 feet measured from the bottom of the footing, unless they carry a surcharge, and El Cajon does not amend that item. Hillside Overlay lots need a geotechnical report for walls in known hazard areas, so ask the City before building any wall on a slope.
What fence materials are not allowed in El Cajon?
Barbed, razor and concertina wire, corrugated metal, plastic, tarps and electrified wire are banned as residential fence materials, and barbed wire is barred in residential areas apart from listed cases such as livestock enclosures. Electric theft-deterrent fences are allowed only in C-M and M zones with an administrative permit.
Can the City make me repair my fence?
It can start the process. Municipal Code 15.16.130(B) says fencing, where installed, shall be maintained in good condition, and the building official can pursue neglected premises through notice and abatement under Chapter 15.16. Landlords face an added step if violations stay uncorrected for six months.
Get a fence plan for your El Cajon lot
Tell us the street, whether the fence is front, side or back, and whether you are on a corner or a slope. We check the height rules and the permit steps before we call you back.