Skip to content

Diamond Bar · Building on your lot

Signs on homes in Diamond Bar

Diamond Bar's own rules on signs on homes, with the code text for every value.

Ask about signs on homes in Diamond Bar See coverage

Each rule below links to the section of the Diamond Bar Municipal Code it was read from, with the code text one click away (checked October 2026). General information, not legal advice.

What Diamond Bar's code says

Diamond Bar code What Diamond Bar's code adds
Signs that need no permit
  • Signs up to 2 square feet per unit. Street address numbers must be at least 4 inches high.
    Applies: Applies to occupant name, street number and street name signs for single-family or multifamily units.
    § 22.36.050 · code text
    Occupant name, street number, and street name signs not exceeding two square feet in area per single-family or multifamily unit. Street address signs shall have Arabic numbers a minimum of four inches in height;
For-sale and open-house signs
  • 1 sign per street frontage, at most 4 square feet and 6 feet high.
    Applies: Applies to single-family dwellings.
    § 22.36.050 · code text
    For single-family dwellings, one sign per street frontage not to exceed four square feet in area and six feet in height.
  • Up to 4 signs, each at most 2 square feet.
    Applies: Applies to open house signs when a sales agent or owner is at the site.
    § 22.36.050 · code text
    In addition, up to four "open house" signs not exceeding two square feet each are allowed when a sales agent or owner is present at the site.
  • Remove the signs when the open house ends.
    Applies: Applies to open house signs.
    § 22.36.050 · code text
    Signs shall be removed when the open house ends.
  • 1 sign per street frontage, at most 32 square feet and 6 feet high.
    Applies: Applies to multifamily dwellings.
    § 22.36.050 · code text
    For multifamily dwellings, one sign per street frontage not to exceed 32 square feet and six feet in height;
  • Remove the sign within 10 days after the sale, lease or rental.
    Applies: Applies to real estate signs offering property for sale, lease or rent.
    § 22.36.050 · code text
    Signs shall be removed within ten days after sale, lease, or rental of the property.
Other temporary signs
  • Up to 3 square feet. Display only during the sale and remove promptly after. Not on public property.
    Applies: Applies to garage or yard sale signs.
    § 22.36.050 · code text
    Signs shall not exceed three square feet in area;

Who this affects

HomeownersContractorsDesigners

Frequently asked questions

What signs may I put up at my home in Diamond Bar?

Diamond Bar's code: Signs up to 2 square feet per unit. Street address numbers must be at least 4 inches high. (Applies to occupant name, street number and street name signs for single-family or multifamily units.) (§ 22.36.050); 1 sign per street frontage, at most 4 square feet and 6 feet high. (Applies to single-family dwellings.) (§ 22.36.050).

General information, not legal advice.

Ask about a specific Diamond Bar property

Ask GoCodebook how Diamond Bar's signs on homes rules apply to your situation and get an answer that cites the section.

Ask your question

More on building on your lot in Diamond Bar

All building on your lot rules in Diamond Bar

Sheds, garages and other accessory structures in Diamond Bar

Solar panels and EV chargers in Diamond Bar

Tree removal in Diamond Bar

Building on a hillside in Diamond Bar

Noise and construction hours in Diamond Bar

Trash and recycling carts in Diamond Bar

Diamond Bar Municipal Code — full text