Guide - Rules and permits
Fence height and the HCA permit process in Hidden Hills
Before you order a fence in Hidden Hills, one process governs everything: the HCA Architectural Committee review, which comes before the City permit. This guide lays out the baseline height limits and, in a clear table, the Committee stages and the timeline they add.
Height limits at a glance
Most guidance you will read quotes the City of Los Angeles limits. Those do not govern here. Hidden Hills is its own incorporated city, and its code sets no height limit for a perimeter fence at all: section 5-2C-4 leaves that to the Architectural Committee. What the code does settle is which structures need review, and that is the table worth having.
| What the code settles | Standard |
|---|---|
| Perimeter fence height | No figure in the code. Set by the Architectural Committee |
| Any solid fence | Never a minor structure, even under 6 ft, so always reviewed |
| Open fencing, side and rear setback | Treated as a minor structure |
| Solid wall in a side or rear setback | 3 ft or less, sited 15 ft or more from the line |
| Retaining wall in the front setback | 2 ft or less |
| Front setback pilasters | Up to 54 in tall and 30 in wide |
The open three-rail ranch fence that fronts most properties is reviewed for how it reads and sits against the trail easements rather than measured against a simple privacy-fence limit, which is why the frontage line in the table is a case-by-case review rather than a fixed number.
The HCA Architectural Committee process, stage by stage
This is the part that surprises owners used to building elsewhere: in Hidden Hills the Committee review is the real gate, and it comes before the City permit. The Hidden Hills Community Association Architectural Committee reviews every fence for material, massing, height, and how the line interacts with the horse-trail easements, and it is among the strictest reviews in California. Here is the sequence and the time each stage usually takes.
| Stage | What happens | Typical time |
|---|---|---|
| 1. Design and submittal | Material, height, massing, and easement setbacks drawn for the Committee | 1 to 2 weeks |
| 2. HCA Architectural Committee | The Committee reviews and approves, or asks for changes | 8 to 16 weeks |
| 3. City of Hidden Hills permit | Issued after HCA approval, with Los Angeles County oversight | 1 to 3 weeks |
| 4. Guard-gate scheduling and build | Crew and material cleared at the manned gate, then install | days |
The eight to sixteen week Committee window is the number that sets your calendar, and a non-standard design can run longer. It is not a formality. A fence built without approval can be ordered changed or torn out, a bill that dwarfs the review it skipped. We draw the submittal to what the Committee approves and put that window on the schedule from day one.
When the City permit and other rules apply
After HCA approval, the City of Hidden Hills issues the fence permit, with Los Angeles County oversight in the background. A standard fence at the baseline height is routine at that stage. A few situations bring extra review: a fence taller than the baseline, a retaining wall that holds back soil on a graded lot, a barrier around a pool, or anything that touches a trail easement. Each is handled as part of the same submittal so nothing surfaces late.
A pool barrier has its own California standard, at least five feet with a self-closing, self-latching gate, and is inspected separately. The pool fencing page covers that code in full.
What we do about it on these lots
We treat the Committee as the first client. Nothing gets ordered until the material, height, and easement setbacks are drawn to the citywide standard, the submittal is assembled, and the price is set against a fence the Committee will pass. The City permit follows from that, and the crew clears the guard gate for the build. It keeps the project on schedule and off the Committee's change list. The cost guide sets out what each height and material choice does to the number, and the ranch rail page covers the frontage standard itself.
We can take the paperwork
The submittal gets drawn to the citywide standard, carried through the Architectural Committee and then the City permit, and priced as a fence that clears both. On-site estimate at no charge, no obligation.
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