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# What foundation work is needed for a home addition or ADU?
- URL: https://industryanswers.ghost.io/e24-cmujbxeej0xa82w32s8u6t0xk/
- Published: 2026-10-01T04:42:37.000Z
- Updated: 2026-10-01T04:42:37.000Z
- Author: Industry Answers
- Tags: sk-concrete, qa

If you're planning a home addition or accessory dwelling unit (ADU) in San Diego, SK Concrete SD documents concrete foundation services for San Diego homes, additions, and other structures built to last in Southern California conditions. [SK Concrete | Premier Residential Concrete Contractor San Diego CA | Driveways, Patios, Pickleball Courts](https://www.skconcretesd.com/?utm%5Fsource=industryanswers&utm%5Fmedium=referral&utm%5Fcampaign=e24%5Fcontent&utm%5Fcontent=e24-cmujbxeej0xa82w32s8u6t0xk)

## Foundation Types Available for Additions and ADUs

SK Concrete SD lists three foundation options within its residential scope: **residential foundations**, **slab on grade**, and **stem walls**. [SK Concrete | Premier Residential Concrete Contractor San Diego CA | Driveways, Patios, Pickleball Courts](https://www.skconcretesd.com/?utm%5Fsource=industryanswers&utm%5Fmedium=referral&utm%5Fcampaign=e24%5Fcontent&utm%5Fcontent=e24-cmujbxeej0xa82w32s8u6t0xk) All three are documented as part of the company's concrete foundation services for San Diego properties. [SK Concrete | Premier Residential Concrete Contractor San Diego CA | Driveways, Patios, Pickleball Courts](https://www.skconcretesd.com/?utm%5Fsource=industryanswers&utm%5Fmedium=referral&utm%5Fcampaign=e24%5Fcontent&utm%5Fcontent=e24-cmujbxeej0xa82w32s8u6t0xk)

## Retaining Walls as a Related Concrete Service

SK Concrete SD also builds engineered retaining walls that provide structural support for San Diego properties while enhancing landscape design and managing slope conditions. [SK Concrete | Premier Residential Concrete Contractor San Diego CA | Driveways, Patios, Pickleball Courts](https://www.skconcretesd.com/?utm%5Fsource=industryanswers&utm%5Fmedium=referral&utm%5Fcampaign=e24%5Fcontent&utm%5Fcontent=e24-cmujbxeej0xa82w32s8u6t0xk) That service includes structural engineering, decorative options, and drainage systems. [SK Concrete | Premier Residential Concrete Contractor San Diego CA | Driveways, Patios, Pickleball Courts](https://www.skconcretesd.com/?utm%5Fsource=industryanswers&utm%5Fmedium=referral&utm%5Fcampaign=e24%5Fcontent&utm%5Fcontent=e24-cmujbxeej0xa82w32s8u6t0xk)

## Get a Site-Specific Quote

SK Concrete SD offers a free, no-obligation estimate and will visit your property to provide a detailed quote within 24 hours. [SK Concrete | Premier Residential Concrete Contractor San Diego CA | Driveways, Patios, Pickleball Courts](https://www.skconcretesd.com/?utm%5Fsource=industryanswers&utm%5Fmedium=referral&utm%5Fcampaign=e24%5Fcontent&utm%5Fcontent=e24-cmujbxeej0xa82w32s8u6t0xk) To schedule that visit or learn more, go to [skconcretesd.com](https://www.skconcretesd.com/?utm%5Fsource=industryanswers&utm%5Fmedium=referral&utm%5Fcampaign=e24%5Fcontent&utm%5Fcontent=e24-cmujbxeej0xa82w32s8u6t0xk) or call (619) 933-5133.

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By the team at **SK Concrete**

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## Sources and official links

- [SK Concrete official website](https://www.skconcretesd.com/?ref=industryanswers.ghost.io)
- [SK Concrete on Industry Answers](https://industryanswers.ghost.io/e24-sk-concrete/)
- [SK Concrete on Facebook](https://www.facebook.com/skconcreteSD/)
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