Folsom ADU Regulations & Building Guide

Folsom is located in Southern California and is known for its vibrant community and scenic beauty. Residents enjoy a mix of urban conveniences and natural attractions.

California State ADU Laws

California has some of the most progressive ADU legislation in the country. Recent laws including AB 68, SB 13, and AB 881 have significantly streamlined the ADU approval process and reduced barriers for homeowners.

Key California ADU Regulations:

• Size Limits: Detached ADUs can be up to 1,200 sq ft. Attached ADUs can be up to 50% of the primary dwelling or 1,200 sq ft, whichever is less.
• Setbacks: Minimum 4-foot side and rear setbacks for detached ADUs.
• Height: Generally up to 16 feet, with some exceptions for two-story ADUs (up to 25 feet in certain zones).
• Parking: No additional parking required in most cases, especially near transit.
• Owner Occupancy: No owner-occupancy requirement until 2025 for most ADUs.

Folsom Local Requirements

While California state law provides baseline regulations, Folsom may have additional local requirements. GatherADU's team stays current with Folsom's specific zoning codes, architectural guidelines, and permit processes to ensure your ADU project meets all requirements.

Common local considerations in Folsom include:

• Design review requirements and architectural standards
• Utility connection fees and impact fees
• Fire department access requirements
• Neighborhood-specific overlay zones

California law (AB 68, AB 881, SB 9, and subsequent legislation) guarantees your right to build ADUs. Cities cannot:

• Require owner-occupancy for ADUs permitted after 2020
• Require additional parking for ADUs near transit
• Charge impact fees for ADUs under 750 sq ft
• Deny ADUs that meet state minimum standards
• Impose lot coverage limits that prevent a 800 sq ft ADU

If you believe your ADU application is being unfairly denied, California HCD can intervene on your behalf.

California ADU Legislation Overview

California leads the nation in ADU-friendly legislation. The state has passed numerous laws to encourage ADU construction as a solution to the housing crisis.

Key California ADU Laws:

• AB 68 (2020): Reduced local government review time and expanded ADU construction options.
• SB 13 (2020): Limited impact fees and reduced owner-occupancy requirements.
• AB 881 (2020): Prohibited minimum lot size requirements and allowed JADUs in all zones.
• AB 2221 (2022): Further streamlined the ADU approval process.
• SB 897 (2022): Increased height limits for ADUs in certain zones.

California ADU Benefits:

• Property value increase of 20-30% on average
• Rental income potential of $1,500-$3,500+ monthly
• Housing flexibility for family members
• No owner-occupancy requirements (until 2025)

Folsom, California, with a population of approximately 78,822, is a suburban city located in Sacramento County. Known for its historic downtown, scenic surroundings, and well-preserved Gold Rush heritage, Folsom blends historical charm with modern amenities. Its Accessory Dwelling Unit (ADU) regulations are tailored to support residential growth while maintaining the city's distinctive character.

Geography and History

Folsom is situated in the Sacramento metropolitan area, near the Folsom Lake and the American River. The city’s history is rooted in the Gold Rush era, with the historic Folsom State Prison and the old town area reflecting its rich past.

Local Economy

Folsom’s economy includes a variety of sectors:

• Technology: Hosts a number of tech companies and startups, benefiting from proximity to Silicon Valley.
• Retail and Services: Features a range of shopping centers, restaurants, and service providers.
• Healthcare: Several healthcare facilities serve the local community.
• Education: Home to Folsom Lake College and other educational institutions.

Popular Neighborhoods

Folsom offers diverse residential areas:

• Historic Folsom: Known for its well-preserved buildings from the Gold Rush era and a vibrant downtown area with shops and restaurants.
• Empire Ranch: A newer community with family-friendly amenities and recreational opportunities.
• Broadstone: Features modern homes and access to parks and schools.
• American River Canyon: Offers scenic views and upscale properties near Folsom Lake.

Real Estate Market

Folsom’s real estate market is characterized by:

• Diverse Housing Types: From historic homes in the downtown area to newer developments.
• Growing Interest in ADUs: Increasing focus on adding ADUs to provide additional living space and rental income.
• Property Values: Generally moderate to high, reflecting the city’s suburban appeal and proximity to Sacramento.

ADU Regulations in Folsom

Folsom’s ADU regulations include:

• Zoning: ADUs are allowed in most residential zones within Folsom. Some commercial zones may also permit ADUs.
• Types of ADUs: Includes detached ADUs, attached ADUs, and conversions of existing structures like garages.
• Size Limits:
  • Detached ADUs: Up to 1,200 sqft.
  • Attached ADUs: Up to 50% of the primary dwelling’s living area or 1,200 sqft, whichever is less.
• Height Restrictions: Detached ADUs are generally limited to 16 feet, with possible exceptions for taller structures based on design review.
• Parking: Requires one additional parking space for each ADU, unless the ADU is located within a specified distance from public transit.
• Owner Occupancy: No owner-occupancy requirement for newly constructed ADUs.
• Approval Process: ADUs that meet the city’s guidelines can benefit from a streamlined approval process.
• Design Standards: ADUs must be designed to complement the primary residence and fit within the character of the neighborhood.
• Multiple ADUs: Typically, one ADU is allowed per residential lot, with potential allowances for additional units based on specific conditions.

Cultural Landmarks and Unique Aspects

Folsom is known for:

• Historic Attractions: Includes the Folsom State Prison Museum and the historic downtown area.
• Outdoor Recreation: Proximity to Folsom Lake offers opportunities for boating, hiking, and other outdoor activities.
• Annual Events: Hosts events like the Folsom Pro Rodeo and the Historic Folsom Farmers Market.

Folsom’s ADU regulations are designed to promote residential growth while preserving the city’s historical charm and suburban character. By offering clear guidelines and supporting various types of ADUs, Folsom aims to enhance housing options and accommodate the needs of its growing population.

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