Accessory
An accessory structure is a secondary building or feature on a property that is subordinate to the main structure, typically used for purposes that are incidental to the primary residence or business. These structures include DADU, garages, sheds, guest houses, greenhouses, workshops, and carports, among others. They are subject to specific zoning regulations, which dictate their size, location, and use, ensuring they complement the main structure without overwhelming it.
These guidelines can be confusing, so we've provided a ChatGPT-translated cheat sheets for local municipalities below to help you navigate the requirements for different types of structures.
To Schedule a time to discuss your future project. CLICK HERE
-
Accessory Dwelling Unit (ADU) Regulations:
Intent: The city supports ADUs to diversify housing options and expand affordable housing, accommodating various household types.
Standards and Criteria:
1. Types: ADUs can be attached (within or added to a single-family home) or detached (including those connected via a breezeway or attached to a garage).
2. Quantity: Up to two ADUs are allowed per lot, in configurations of either attached, detached, or a combination of both.
3. Location:
- ADUs must meet setback requirements.
- Attached ADUs follow the principal dwelling's setbacks, while detached ADUs can be placed in the rear half of a lot with specific setbacks.
- The planning director may modify these requirements if necessary.
4. Height: Detached ADUs must not exceed 24 feet in height, with some exceptions for features like chimneys.
5. Design: ADUs must comply with all relevant building codes and cannot use metal, aluminum, or fiberglass siding.
6. Size: ADUs are limited to a maximum of 1,000 square feet, with specific exclusions from the gross floor area.
7. Parking: Parking requirements are detailed in a separate section (KCC 15.05.040).
8. Development Standards: General development standards apply, including building coverage and setbacks.
9. Covenants: Owner occupancy covenants are not required and may be released by the planning director.
10. Permits: A permit is required for all ADUs, with application requirements set by the economic and community development department.
11. Ownership: ADUs and the principal dwelling can be separately owned, though state law governs the creation of condominiums.
12. Deviations: The planning director can approve reasonable deviations due to site conditions, provided they do not negatively impact neighboring land uses or public health and safety.
Intent: The city supports ADUs to diversify housing options and expand affordable housing, accommodating various household types.
Accessory Buildings:
1. Location: Accessory buildings can be placed anywhere on a lot if they follow the same setbacks as the principal building. In the rear half of the lot, they can be within two feet of the side and rear lot lines unless attached to the main building, in which case they must follow the main building's setbacks. Accessory dwelling units are excluded from this rule.
2. Guest Cottage: Only one guest cottage is allowed per lot and must be located in the rear half, unless the lot shape or house placement makes this infeasible.
3. Size: The total footprint of all accessory buildings on a lot cannot exceed 15% of the lot area.
4. Height: Accessory buildings cannot exceed 23 feet in height or be taller than the principal building.
5. Design: Accessory buildings 12 feet or taller must visually match the principal building in exterior finish, trim, and roof pitch.
-
Link to City of Redmond Municipal Code
ADU & DADU
1. Number of ADUs:
One ADU or tiny home is allowed per residential lot, subordinate to any new or existing detached single-family dwelling in Redmond.
2. Location:
An ADU can be attached to or included within the primary dwelling or located in a detached structure on the same lot.
Both the detached ADU and primary dwelling must comply with all setback, lot coverage, and other zoning regulations.
The maximum height for a detached ADU is 28 feet.
Tiny homes visible to the public must have landscaping to screen the trailer base.
3. Size/Scale:
The ADU's square footage cannot exceed 50% of the primary dwelling's square footage, with a maximum of 1,500 square feet.
If the ADU occupies an entire floor of the primary dwelling, the Technical Committee may allow for an increase in size.
On lots larger than 10,000 square feet, the Technical Committee may permit a larger ADU if it meets affordable housing criteria or provides a public benefit.
A tiny home must not exceed 400 square feet.
4. Subdivision:
An ADU cannot be subdivided or separated in ownership from the primary dwelling.
5. Occupancy:
Short-Term Rentals: The owner must reside in either the primary unit or ADU if the lease is less than 12 months.
Long-Term Rentals: For leases of 12 months or more, the owner does not need to occupy the site, but both units must have signed leases.
A permit for an ADU: requires proof of compliance with these rules.
6. Parking:
One additional off-street parking space is required for the ADU, in addition to the primary dwelling’s parking. Paved spaces may include driveways, garages, carports, or reserved off-street areas. For ADUs within a quarter-mile of a major transit stop, refer to RZC 21.40.010.D.4.
7. Exterior Modifications:
Only one front entrance is allowed on the primary dwelling. Additional entrances are permitted on the side or rear. The Technical Committee may allow a front entrance for both units if other options are hindered. Any new ADU construction or additions must match the facade, siding, and windows of the primary dwelling.
8. Home Business:
A home business is allowed in both the ADU and primary unit, subject to existing regulations.
9. Affordable Housing:
ADUs cannot be used to satisfy affordable housing requirements per RZC Chapter 21.20.
10. Applicable Codes:
The portion of the primary dwelling containing the ADU must meet all health and safety standards, except for ceiling height, which may be waived if the structure met previous code requirements.escription text goes here
Last Update 10.03.2024
-
Redmond
Bellevue
Seattle
Kirkland
Woodinville
More!
Project Story: Boat Garage
This family wanted a place to store there boat as well as an additional rec-room space that could be used for friends and family to hang out. The space that has been is capable of being converted into a separate rental unit space.
Project is complete and final interior photos will be updated here, check back in the future
Project Story: Custom DADU Woodinville
We are thrilled to share details about our latest project: a custom Detached Accessory Dwelling Unit (DADU) that is part of a unique three-lot development. The property owner has lived here for over 30 years on a large multi-acre parcel. They have decided to divide the lot into three parcels: one with a custom home for their daughter's family, one sold off, and the third for a new custom home and this DADU for their son.
Currently in the permitting stages, construction is set to begin in Fall 2024. This project embodies thoughtful planning and design, ensuring that each family member can enjoy a home tailored to their needs while maintaining the property's legacy. Stay tuned for more updates as we bring this vision to life!
Project Story: Convert Barn to DADU
We are excited to announce our latest project: converting a large barn into a multi-functional space to support a growing family. The homeowner's mother, and grandmother to his young children, is ready to downsize and be closer to the family to enjoy and help with the grandkids.
Our plan involves transforming the barn's second story into a comfortable living space for grandma, while the first floor will be repurposed into storage and a recreational room. This project not only provides a practical solution for multi-generational living but also creates a versatile space that the entire family can enjoy.
Construction is set to be completed by Fall 2024. Stay tuned for updates as we bring this unique vision to life!
Project Story: Custom DADU Walla Walla
We are thrilled to unveil our latest project nestled in the heart of wine country: a custom home featuring an incredible Detached Accessory Dwelling Unit (DADU). This versatile space will serve as the perfect retreat for visiting friends and family, and as an awe-inspiring pool house.
Construction is underway . Check out our social media for updates as we bring this dream home to life, combining luxury living with the beauty and tranquility of wine country.
Project Story: Guest House & Garage- Plain, WA
This Small cabin on the river is getting this much needed addition space for more friends and family to enjoy this lovely property together. The ground floor will be 2+ car garage and two new bedrooms, bath and living are for friends and family to stay. This project is in permitting stages and is schedule to start construction Spring 2025
Project Story: DADU - Shoreline
Creating a space for multigenerational living. Currently in early design phases.
