SB9 - Lot Splits and Duplexes in California

California’s newest housing bill makes it easier for homeowners to build more housing and, under certain conditions, split their lots into two lots.

If you can combine both parts of the law, you can split a lot into 2 lots and build 2 units on each - for a total of 4 units.

And if the city is very friendly, you might be able to do more…

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Ryan OConnell
Everything ADUs Can Do For You

Accessory Dwelling Units (ADUs) are incredibly versatile tools so this is a long list of the most popular uses we see for ADUs in California.

This list covers nine specific ways people use their ADUs, based on hundreds of conversations I’ve had with homeowners. The list ranges from the very obvious (example: housing your mother-in-law in the in-law suite) to more surprising uses (example: downsizing to an ADU so you can rent out the main house and travel the world during your retirement).

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ADU Impact Fees in California - a helpful guide to how they work with real examples

There isn’t one easy place to look up impact fees (either what they are, or how much they’ll be for your Accessory Dwelling Unit). And it’s one of the parts of the new ADU rules where I’ve seen the most confusing guidance from the state, so it’s natural that you’ve got questions.

This article tries to tackle the big subject of ADU Impact Fees in California.

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ADU Size Limits in California - How Big Can My ADU Be?

You want to know how big an Accessory Dwelling Unit (ADU) can be in California, and this article is going to answer that question, no matter what part of California you’re in.

Each jurisdiction can have its own rules about the minimum and maximum ADU size limits, but here’s the basic breakdown!

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ADU Marin - Free ADU Resources for Marin residents

ADU Marin is a new partnership between 10 local cities and towns and the county of Marin.

They’re launching a lot of free ADU resources to guide homeowners through the process of planning and building an Accessory Dwelling Unit.

As I understand, this was paid for with SB 2 grants from the state of California which explains why it’s free for you!

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ADU Solar Requirements in California - Do you need Solar Panels on your Accessory Dwelling Unit?

California has some complicated energy requirements, so a lot of homeowners ask us what their solar requirements are when they are planning and budgeting a potential Accessory Dwelling Unit (ADU).

According to Title 24, newly built, non-manufactured, detached ADUs will generally need to install solar panels if the local agency is enforcing the prescriptive energy requirements in California’s state code.

On the other hand, manufactured units, garage conversions, and attached ADUs generally won’t be required to install solar panels.

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California ADU Law - September 2020 Updated Guidance

Read the new guidance about the state-wide ADU laws in California.

The HCD released a handbook in September 2020 that clarifies how ADU regulations interact at a local and state level, and how different parts of the Accessory Dwelling Unit laws are supposed to be interpreted at the city and county level.

Read this article or watch the accompanying youtube video with my key takeaways about California’s ADU Laws

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