Shed Shop offers ADUs (Accessory Dwelling Units) via their Mini Cottage program. Sizes range from 192 to 480 sq. ft. Services include foundation, plumbing, electrical, permits & more. Available in select cities.

Shed Shop – ADU Contractor in Hayward, CA

About Shed Shop

Accessory Dwelling Units by Shed Shop

For homeowners looking to add a separate living space for a family member or friend, Shed Shop offers a structured solution through their Mini Cottage program. These structures are known in the construction industry as Accessory Dwelling Units (ADUs) — sometimes referred to as in-law units, granny flats, or backyard cottages in everyday conversation.

Building an ADU involves navigating a range of challenges: sourcing plans, managing multiple contractors, meeting local building codes, and handling energy compliance requirements. Shed Shop's approach is to offer a complete package for a basic in-law unit, removing the need to separately hire an architect or coordinate various trades independently.

The Mini Cottage Program

Shed Shop's ADU offering is built around their classic gable design, which they refer to as the Mini Cottage. This model is currently available in select cities within their local service area as part of a Pilot Program. It is not available in their extended service area or in cities with particularly complex building regulations.

The Mini Cottage is available in sizes ranging from 192 sq. ft. (14×16) up to 480 sq. ft. (such as 20×24 or 16×30). Rather than being limited to fixed layouts, clients can work with Shed Shop to determine a size that fits their property and meets placement codes, then choose configurations for door and window placement as well as kitchen and bathroom layout.

As an ADU contractor, Shed Shop handles a broad scope of the project, including:

  1. Site preparation and foundation work
  2. Gas and electrical installation
  3. Water, sewer, and plumbing
  4. Kitchen and bathroom fitting
  5. Permit processing and city coordination

There are some items that fall outside of Shed Shop's direct scope, such as lot surveys, deed restrictions, and drainage systems. These may need to be handled by the client separately.

Pricing and Configuration

Shed Shop keeps costs manageable by offering straightforward options. The roof style is a classic gable, chosen for its cost-effectiveness. There are also some do-it-yourself options available — for example, clients can choose to handle their own painting and flooring to reduce overall project costs.

Base pricing for the most common sizes is outlined in their Pilot Program Brochure. As a backyard cottage builder and in-law suite builder, Shed Shop aims to provide a manageable path to adding an accessory dwelling unit without requiring clients to piece together the process on their own.

For those considering an ADU, Shed Shop provides a frequently asked questions resource to help address common concerns about the process, requirements, and what to expect throughout the project.

Services

Shed Shop performs the following services

  • Architecture & Design
  • Permit Specialist
  • Construction
  • Feasibility & Site Assessment
  • Finishing & Fit-out
  • HVAC installation

Shed Shop Reviews

Mark Mallinson

2026-03-07
"We had a 10x12' shed built by the Shed Shop more than a dozen years ago and we love it. My wife calls it my "Man Cave" and I use it as a shop, for storage and a quiet place to place phone calls. Recently, our shed experienced some damage after a major storm, and the Shed Guys came to the rescue with a fair price for a speedy and complete repair. Having this stand-alone "suite" has really enhanced our living space and is vastly better than the cheap junky sheds sold at the big box hardware stores. Totally worth it."

Christopher Berry

2026-02-20
"Love my sheds. Quality is extremely high and the install process was smooth and easy. I purchased my first shed 7 years ago and just recently had a new one built to match. They look great together and the older shed is in exactly the same condition as the new one - showing just how well they are built and hold up over time"

John Rinehart

2026-02-19
"Our experience with ShedShop has been very positive especially with post install support and maintenance. We have two sheds : the first installed in 2008 for office space for working from home which worked out very well the second installed in 2015 as a furniture making shop -both are approx 8x15. After 17 years our 2008 shed had deteriorated from rain and not having roof gutters: the front lower siding and supporting structure portions of 2x4s needed replacement as well as the front door, eaves and a few other areas. We had done zero maintenance on the shed - had not repainted resealed the exterior that could have prevented this. I called ShedShop more to learn what I would need to tell a local contractor on how to repair. Nick, the owner, came out and assessed the damage and provided a comprehensive quote to repair at what I thought was a very reasonable price. I was a little surprised that he did not just give me the tel of a couple of contractors that might do the work but no - ShedShop did the repair themselves. A time was scheduled, Noe and Steven from ShedShop came out, did the work, kept me in the loop, had 1 minor change order, work appeared very professional, they were very courteous and cleaned the area after completion. Noe provided guidance on the simple periodic preventive maintenance that I could easily do that would prevent this in the future. For us, these sheds have provided great value and this company provided a good product and stands behind it long term so I recommend their product and services. Hope this helps."

Nancy Thai

2025-12-02
"They are very experienced and guided me through all the process. Stacey gave us the tour at their shop and answered all my questions. Angela did the onsite visitation and handled the communication. I ran into a bump with installing my own concrete that wasn't up to par but they were very informative. I had that fixed and they were able to install the shed and electricity in a short 3 weeks! They handle all the permits. They are also very upfront with their pricing in their quotes, so there is no surprises. I wanted to paint the interiors to save some money and they were flexible allowing me to handle that. For the smoothest experience, try the Shed Shop!"

Scott M

2025-06-04
"If you want a nice shed this is the place. Their showroom was nice enough and the staff was helpful, easy to work with and not pushy. Installation construction actually was fun to watch. These guys do it day in and day out and work like a ballet putting the thing up. All in all the whole process was tip top from beginning to end."

Specifics

Turnkey Solutions

Opening hours

Monday 9:00AM - 5:00PM
Tuesday 9:00AM - 5:00PM
Wednesday 9:00AM - 5:00PM
Thursday 9:00AM - 5:00PM
Friday 9:00AM - 5:00PM
Saturday 10:00AM - 4:00PM
Sunday -

Location

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