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Monrovia · Building on your lot

Building on your lot in Monrovia

Monrovia sets its own sight limit at intersections and its own home-business rules. Its fence rule covers the corner sight areas in all zones.

Key points

  • Corner sight areas: City rule: in all zones, nothing higher than 3 ft may stand in the triangular sight areas at intersections.
  • Home businesses: City rule: a home business may use 1 room of the dwelling or an accessory structure and is run by resident family members only.

Each rule below is marked Monrovia code or CA state law and links to the section it comes from (checked October 2026). General information, not legal advice.

Fences and walls

Monrovia code What Monrovia's code adds
Corner visibility
  • Nothing higher than 3 feet above grade in the corner sight triangles.
    Applies: Buildings, walls, fences, hedges, shrubs and signs at intersections, in all zones.
    § 17.16.030 · code text
    In all zones, no buildings, walls, fences, hedges, shrubs, ground signs or the physical obstruction higher than three feet above grade shall be located in the triangular areas defined by the intersections diagramed in § 17.12.040 (the diagrams are not to scale).

Running a business from home

Monrovia code What Monrovia's code adds
Space used
  • No more than 1 room.
    Applies: In the home or in an accessory structure.
    § 17.44.100 · code text
    Not more than one room in a dwelling or in an accessory structure shall be employed for the home occupation;
Employees
  • No employees other than members of the resident family.
    § 17.44.100 · code text
    No employees are allowed other than members of the resident family;

RV and boat parking

Monrovia code What Monrovia's code adds
Where it may be parked
  • In the rear or side yard.
    Applies: Residential or commercial zones, when not inside a fully enclosed building.
    § 17.24.150 · code text
    It is stored in the rear or side yard and screened from view from the street and alley, or adjacent properties.
Front-yard parking
  • No.
    Applies: Residential or commercial zones, unless inside a fully enclosed building or the listed criteria are met.
    § 17.24.150 · code text
    No motor vehicle, incapable of movement under its own power, camper shell, trailer, boat, recreational vehicle or similar vehicle shall be parked or stored in a residential or commercial zone unless contained in an entirely enclosed building, or unless the following criteria are met:
Screening and surface
  • Screened from view from the street, alley or neighboring properties.
    Applies: Residential or commercial zones, when stored in the rear or side yard.
    § 17.24.150 · code text
    It is stored in the rear or side yard and screened from view from the street and alley, or adjacent properties.
  • The parking or storage pad must be paved to city standards.
    Applies: Residential or commercial zones.
    § 17.24.150 · code text
    The parking or storage pad is paved in conformance with this chapter.

Solar panels and EV chargers

Monrovia code What Monrovia's code adds
EV charger permit
  • Expedited, nondiscretionary review; permit issued within 3 business days of a complete application meeting the checklist and standard plan.
    Applies: EV charging station applications meeting the approved checklist and standard plan.
    § 15.56.060 · code text
    For an application for electric vehicle charging stations that meets the requirements of the approved checklist and standard plan, the Building and Safety Division shall issue a building permit or other non-discretionary permit within three business days following receipt of a completed application.
  • Electronic submittal and electronic signatures are accepted.
    Applies: Permit applications covered by the EV charging rules.
    § 15.56.060 · code text
    The Building Official shall allow for electronic submittal of permit applications covered by this chapter and associated supporting documentations. In accepting such permit applications, the Building Official shall also accept electronic signatures on all forms, applications, and other documentation in lieu of a wet signature by any applicant.
  • Only one inspection, scheduled within 2 business days of a request.
    Applies: Electric vehicle charging stations eligible for expedited review.
    § 15.56.060 · code text
    Only one inspection shall be required and it shall be performed by the Building and Safety Division for electric vehicle charging stations eligible for expedited review.
Solar permit process
  • Administrative, nondiscretionary review; permit for an application meeting the checklist and standard plan; 1 inspection, scheduled within 2 business days.
    Applies: Small residential rooftop solar systems.
    § 15.52.060 · code text
    For an application for a small residential rooftop solar energy system that meets the requirements of the approved checklist and standard plan, the Building and Safety Division shall issue a building permit or other non-discretionary permit within three business days following receipt of a completed application.
Review time
  • Permit issued within 3 business days of a complete application.
    Applies: Small residential rooftop solar systems meeting the approved checklist and standard plan.
    § 15.52.060 · code text
    For an application for a small residential rooftop solar energy system that meets the requirements of the approved checklist and standard plan, the Building and Safety Division shall issue a building permit or other non-discretionary permit within three business days following receipt of a completed application.

Tree removal

Monrovia code What Monrovia's code adds
Exemptions
  • Removal may be ordered by a police, fire or Parks and Tree Division staff member.
    Applies: Emergency, when a tree is hazardous or dangerous to life or property.
    § 17.20.040 · code text
    In case of emergency when a tree is hazardous or dangerous to life or property, it may be removed by order of any member of the Police Department, Fire Department, or Community Services Department (Parks and Tree Division);
Penalty
  • An infraction.
    Applies: Violation by a single-family homeowner.
    § 17.20.040 · code text
    Violations of this section by a single-family homeowner shall be punishable as an infraction.
  • A misdemeanor.
    Applies: Violations on lots with other than single-family homes.
    § 17.20.040 · code text
    Persons with violations on lots developed with other than single-family homes shall be deemed guilty of a misdemeanor.
Permit to remove
  • Yes, an oak tree preservation permit is required to cut down, extract, kill or otherwise remove an oak.
    Applies: Oaks 10 inches or more in diameter at 2 feet above ground; on single-family lots, only front or street-side yards.
    § 17.20.040 · code text
    If an oak tree is to be cut to the ground, completely extracted, or to be killed or removed, by any other means;
  • Yes, an oak tree preservation permit is required.
    Applies: Pruning that removes more than 1/3 of the crown, foliage or root system.
    § 17.20.040 · code text
    If an oak tree is to be pruned so that more than one-third of the crown, existing foliage, or root system of the tree is removed;
Protected trees
  • Any native live oak or other oak 10 inches or more in diameter, measured 2 feet above ground.
    Applies: Oak trees covered by the oak rules.
    § 17.20.040 · code text
    Any oak tree ten inches in diameter or more measured at two feet above the level ground is subject to this section.
  • Oak trees in the front yard or street-facing side yard.
    Applies: Single-family zoned properties.
    § 17.20.040 · code text
    Single-family zoned properties with oak trees in the front yard or street-facing side yard.
  • All oak trees.
    Applies: Multiple-family, commercial or industrial zones (RM, RM/PUD, RH, RM/RH, NC, HCD, CD/O, C/RS, O/RD/LM, BE, M, P/QP, PD).
    § 17.20.040 · code text
    In the multiple-family, commercial or industrial zones (RM, RM/PUD, RH, RM/RH, NC, HCD, CD/O, C/RS, O/RD/LM, BE, M, P/QP and PD) all oak trees.
  • Oak trees in the front yard or street-facing side yard.
    Applies: Single-family homes in multiple-family, commercial or industrial zones with no new development proposed.
    § 17.20.040 · code text
    Exception: Single-family developed properties where no additional development is proposed shall be subject to division (A)(2)(a) above.
  • All oak trees.
    Applies: Vacant lots.
    § 17.20.040 · code text
    All oak trees on vacant lots.
  • All oak trees shown on an oak tree preservation plan.
    § 17.20.040 · code text
    All oak trees indicated on an oak tree preservation plan.
Replacement trees
  • Replacement with a tree of similar size, type and condition may be required.
    Applies: Violation of the oak tree rules.
    § 17.20.040 · code text
    Violators may also be required to replace the tree(s) with a tree of comparable size, type, and condition as determined by the Development Review Committee.

Swimming pools

Monrovia code No more than 2 inches between grade and the bottom of the barrier. Up to 4 inches between grade and the bottom of the barrier is allowed.

All 18 Monrovia rules on swimming pools, with the code text and the state law underneath →

Pets, chickens and bees

Monrovia code What Monrovia's code adds
Chickens
  • Yes; no number limit is stated.
    Applies: Rear yard only, at least 50 feet from homes, 100 feet from schools, churches and similar institutions, 75 feet from the front street.
    § 6.28.050 · code text
    It shall be unlawful for any person to keep any animal other than dogs, cats, rabbits, poultry and domestic fowls, on a lot in any zone specified in Title 17 of this code, except as follows:
Large animals
  • Minimum 400 square feet of usable space for each animal
    Applies: animals other than dogs, cats, rabbits, poultry and domestic fowl; lots of at least 20,000 square feet in RE, one and one-half acres in RF, 14,000 square feet in other zones
    § 6.28.050 · code text
    That such animals shall have a minimum of 400 square feet of usable space for each animal;
  • Not within 50 feet of any home, or 100 feet of a school, hospital, rest home, church or similar place.
    Applies: Animals other than dogs, cats, rabbits, poultry and domestic fowl.
    § 6.28.050 · code text
    That such animals are not kept or fenced within 50 feet of any residence or other structure used for the habitation of human beings (including accessory living quarters, patios and swimming pools), or within 100 feet of any school, hospital, rest home, sanitarium, church or similar institution;
Permit
  • A Planning Commission conditional use permit is needed to keep more than 10.
    Applies: Animals other than dogs, cats, rabbits, poultry and domestic fowl, on lots of 2 acres or more.
    § 6.28.050 · code text
    A maximum of ten on two acres or more; the Planning Commission shall have the discretion to increase the maximum number above ten by the procedure for conditional use permits as provided in this code.
  • Development Review Committee approval to keep animals outside the rear yard; shelters may not be visible from streets or alleys.
    Applies: Where the rear yard is too small and the lot has more than 150 feet of street frontage.
    § 6.28.060 · code text
    Where the rear yard is insufficient to keep such rabbits, fowls, birds and animals, and only where the property has frontage on a dedicated street or private way in excess of 150 feet, such rabbits, fowls, birds or animals may be kept elsewhere on the lot subject to the approval of the Development Review Committee;
Pet limit
  • At most 4 dogs and cats total, with at most 3 dogs or 4 cats over 4 months old.
    Applies: Plus 1 pot-bellied pig; the limit does not apply to a licensed kennel or cattery.
    § 6.28.030 · code text
    Unless licensed as a kennel or cattery pursuant to § 6.28.110, it shall be unlawful for any person to keep or maintain more than a total combination of four dogs and cats on any lot or premises for any purpose.

Who this affects

HomeownersContractorsDesigners

Frequently asked questions

How tall can a fence be in Monrovia?

City rule: in all zones, nothing higher than 3 ft may stand in the triangular sight areas at intersections.

Can I run a business from my home in Monrovia?

City rule: a home business may use 1 room of the dwelling or an accessory structure and is run by resident family members only.

Can I park an RV or boat at my home in Monrovia?

Monrovia's code: In the rear or side yard. (Residential or commercial zones, when not inside a fully enclosed building.) (§ 17.24.150); No. (Residential or commercial zones, unless inside a fully enclosed building or the listed criteria are met.) (§ 17.24.150).

Do I need a permit for solar panels or an EV charger in Monrovia?

Monrovia's code: Expedited, nondiscretionary review; permit issued within 3 business days of a complete application meeting the checklist and standard plan. (EV charging station applications meeting the approved checklist and standard plan.) (§ 15.56.060); Electronic submittal and electronic signatures are accepted. (Permit applications covered by the EV charging rules.) (§ 15.56.060).

Do I need a permit to remove a tree in Monrovia?

Monrovia's code: Removal may be ordered by a police, fire or Parks and Tree Division staff member. (Emergency, when a tree is hazardous or dangerous to life or property.) (§ 17.20.040); An infraction. (Violation by a single-family homeowner.) (§ 17.20.040).

Can I keep chickens or bees at my home in Monrovia?

Monrovia's code: Yes; no number limit is stated. (Rear yard only, at least 50 feet from homes, 100 feet from schools, churches and similar institutions, 75 feet from the front street.) (§ 6.28.050); Minimum 400 square feet of usable space for each animal (animals other than dogs, cats, rabbits, poultry and domestic fowl; lots of at least 20,000 square feet in RE, one and one-half acres in RF, 14,000 square feet in other zones) (§ 6.28.050).

General information, not legal advice.

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