Simi Valley · Building on your lot
Building on your lot in Simi Valley
Simi Valley sets its own limits on fences, accessory structures and home businesses. Lower fence limits apply in the TSSA, and a home business needs a valid Home Occupation Permit.
Key points
- Fence height: In residential zones, front-setback fences are limited to 42 inches, or 6 feet if see-through; other property line fences, 6 feet.
- Accessory size: On lots under 1 acre, accessory structures are limited to 30% of the main building's square footage, up to 1,200 square feet.
- Home businesses: A home business may use 1 room, at most 20% of the home, with no non-resident employees; professional services, 1 client at a time.
Each rule below is marked Simi Valley code or CA state law and links to the section it comes from (checked October 2026). General information, not legal advice.
Fences and walls
| Corner visibility |
|
|---|---|
| Front yard height |
|
| Side and rear yard height |
|
| Permit |
|
Sheds, garages and other accessory structures
| Size or lot coverage |
|
|---|---|
| Distance from the house |
|
Running a business from home
| Space used |
|
|---|---|
| Customer visits |
|
| Employees |
|
| Permit |
|
Solar panels and EV chargers
| EV charger permit |
|
|---|
Tree removal
| Exemptions |
|
|---|---|
| Permit to remove |
|
| Replacement trees |
|
Other Simi Valley rules on this
Simi Valley's code also has these chapters. We have not summarized their values on this page yet; read them in the library.
- Keeping animals at home (§ 9-44.060)
- Two-unit homes on one lot (SB 9) (§ 9-24.080)
- Parking oversized vehicles and trailers on streets (§ 4-9.402) — on public streets
Who this affects
Frequently asked questions
How tall can a fence be in Simi Valley?
In residential zones, front-setback fences are limited to 42 inches, or 6 feet if see-through; other property line fences, 6 feet.
How big can a shed or accessory building be in Simi Valley?
On lots under 1 acre, accessory structures are limited to 30% of the main building's square footage, up to 1,200 square feet.
Can I run a business from my home in Simi Valley?
A home business may use 1 room, at most 20% of the home, with no non-resident employees; professional services, 1 client at a time.
Do I need a permit for solar panels or an EV charger in Simi Valley?
Simi Valley's code: Expedited review and permit approval within 7 business days. (EV charging station permit applications.) (§ 8-25.06); Issued over the counter in person, or through electronic submittal. (Level 1 or Level 2 EV chargers in a single-family garage covered by the California Residential Code.) (§ 8-25.07).
Do I need a permit to remove a tree in Simi Valley?
Simi Valley's code: No replacement or payment for the tree's value is required. (When the city requests removal to get adequate line of sight for public safety.) (§ 9-38.070); Yes, a Tree Removal Permit is required. (Removing, relocating, cutting down or otherwise destroying a protected tree.) (§ 9-38.070).
General information, not legal advice.
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