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South Bay Cities ADU Calculator

The South Bay Cities Accessory Dwelling Unit (ADU) Calculator is an online tool that enables you to estimate the cost of building an ADU in your city. South Bay residents can create an estimate by entering the desired number of bedrooms and bathrooms, square footage, and choosing from various ADU construction types. Additional customization is offered to estimate costs, such as opting to use a property manager, public sewer vs. septic system, site conditions, construction quality, financing inputs, and rent information. Available in English, Spanish, and Chinese, the South Bay Cities ADU Calculator reduces barriers to information about ADU development.

Currently, six cities are on the ADU Calculator: Torrance, Inglewood, Manhattan Beach, Hermosa Beach, Rolling Hills Estates, and Rolling Hills. SBCCOG is working to add all South Bay cities in the near future.

Please visit the ADU Calculator here: https://southbaycities.aducalculator.org/

SBCCOG thanks early funders and supporters of the ADU Calculator including the Chan Zuckerberg Initiative DAF, San Mateo County, The Association of Bay Area Governments, Napa Valley Community Foundation, Community Foundation Sonoma County, an advised fund of the Silicon Valley Community Foundation, and others. 

Regional Early Action Planning (REAP)

SBCCOG received funding for four projects through Regional Early Action Planning (REAP) grants from the California Department of Housing and Community Development (HCD) and administered through the Southern California Association of Governments (SCAG). REAP supports planning to accelerate housing production through implementable actions that will increase housing supply to meet the 6th cycle Regional Housing Needs Assessment (RHNA). Below is a brief summary of each REAP project.

ADU Acceleration

Multifaceted research and planning project including mapping, economic analysis, policy assessment, infrastructure impacts, surveys of applicants and tenants, best practices, and forecasting of ADU development in the South Bay.

Commercial Redevelopment into Housing

Multifaceted research and planning project to develop tools for cities to identify underperforming commercial segments with potential for redevelopment into housing with zero emission mobility options, and identify commercial properties – strip arterials, regional malls, office buildings, and industrial parks – that are strong candidates for redevelopment into sustainable affordable housing in the South Bay.

Housing Education Program

Workshops and online resources to encourage informed discussions about residential density and design that support a full range of housing options in the South Bay and help decisionmakers and stakeholders understand optimal ways to meet regional housing needs.

SB 330 Residential and Protected Unit Forms

Creation of a supplemental application form for SB 330 housing development projects to preserve residential dwellings and protected units, prevent displacement, and help South Bay cities meet their RHNA goals.

The South Bay Cities Council of Governments monitors state housing policy and advocates for the interests of the South Bay sub-region. 

No on SB9

The South Bay Cities Council of Governments wrote a letter to Governor Gavin Newsom imploring him to veto Senate Bill 9. Please take a moment to watch a video featuring our board members sharing why it’s so important for the legislature to oppose this bill. 

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