Redmond ADU Regulations & Building Guide

Redmond is a vibrant community located in Washington in King County with a population of approximately 77,490. As demand for housing continues to grow, accessory dwelling units (ADUs) have become an increasingly popular solution for homeowners looking to add living space, generate rental income, or house family members.

GatherADU provides comprehensive ADU services to Redmond residents, including custom design, permit assistance, and full construction management. Our team understands local building codes and zoning regulations to ensure your project proceeds smoothly.

Washington State ADU Laws

Washington state has enacted legislation to encourage ADU construction as part of efforts to address housing affordability and availability.

Key Washington ADU Regulations:

• Size Limits: Vary by jurisdiction, typically 800-1,000 sq ft.
• Parking: Many cities have reduced or eliminated parking requirements.
• Short-Term Rentals: Local regulations may apply to ADU rentals.

Redmond Local Requirements

Contact GatherADU for specific information about ADU regulations in Redmond, Washington.

California law (AB 68, AB 881, SB 9, and subsequent legislation) guarantees your right to build ADUs. Cities cannot:

• Require owner-occupancy for ADUs permitted after 2020
• Require additional parking for ADUs near transit
• Charge impact fees for ADUs under 750 sq ft
• Deny ADUs that meet state minimum standards
• Impose lot coverage limits that prevent a 800 sq ft ADU

If you believe your ADU application is being unfairly denied, California HCD can intervene on your behalf.

Washington ADU Legislation Overview

Washington state continues to expand ADU opportunities for homeowners across the state.

Key Washington ADU Developments:

• Statewide mandate for cities to allow ADUs
• Reduced parking requirements in many jurisdictions
• Streamlined permitting processes

Redmond, Washington, a city with a population of approximately 77,490, is located in King County and is renowned for its tech industry presence, with Microsoft’s headquarters being a major employer. The city blends suburban tranquility with a strong technological and economic base, making it an attractive location for residents and businesses alike. Redmond's approach to Accessory Dwelling Units (ADUs) reflects its commitment to sustainable growth and accommodating a diverse population.

Geography and History

Redmond is situated in the eastern part of King County, nestled between the Sammamish River and Lake Sammamish. Historically, the area has transitioned from a rural farming community to a dynamic suburban city with significant tech industry influence.

Local Economy

Redmond’s economy is characterized by:

• Technology Sector: Home to major technology companies like Microsoft and numerous tech startups.
• Retail and Services: A variety of shopping centers, restaurants, and service businesses cater to residents and visitors.
• Education: Redmond is served by the Lake Washington School District and is known for its quality public schools.

Popular Neighborhoods

Redmond features several desirable neighborhoods:

• Downtown Redmond: The city’s core area with a mix of residential, commercial, and recreational spaces.
• Education Hill: Known for its family-friendly atmosphere and proximity to schools and parks.
• Redmond Ridge: A master-planned community offering a range of housing options and amenities.
• Union Hill: A more rural-feeling neighborhood with larger lots and proximity to natural spaces.

Real Estate Market

The real estate market in Redmond is defined by:

• Single-Family Homes: Predominantly single-family residences with a mix of architectural styles.
• Property Values: Generally higher than the national average, reflecting the city’s desirable location and economic opportunities.
• New Developments: Increasing interest in new construction and ADUs as the city seeks to address housing demand.

ADU Regulations in Redmond

Redmond’s ADU regulations are designed to support housing growth while preserving the city’s residential character:

• Zoning: ADUs are allowed in residential zones, including single-family and multi-family districts.
• Types of ADUs: Includes detached ADUs, attached ADUs, and internal conversions of existing structures such as basements or garages.
• Size Limits:
  • Detached ADUs: Typically up to 800 sqft.
  • Attached ADUs: The size is limited to 40% of the primary dwelling’s floor area or 800 sqft, whichever is less.
• Height Restrictions: Detached ADUs are generally limited to 16 feet in height.
• Parking: Generally requires one additional parking space per ADU. Reduced parking requirements may apply based on proximity to transit or other criteria.
• Owner Occupancy: There is no owner-occupancy requirement for newly constructed ADUs.
• Approval Process: ADUs that meet city standards benefit from a streamlined approval process, simplifying permitting.
• Design Standards: ADUs must be designed to be compatible with the primary residence and surrounding neighborhood. This includes considerations for architectural style, materials, and landscaping.
• Multiple ADUs: Typically, one ADU is allowed per residential lot. Additional units may be considered under specific conditions or through a variance.

Cultural Landmarks and Unique Aspects

Redmond is notable for:

• Parks and Recreation: The city boasts numerous parks and recreational facilities, including Marymoor Park and the Redmond Central Connector trail.
• Tech Industry Influence: The presence of major tech companies shapes the city’s economic landscape and community character.
• Community Events: Local events like the Redmond Derby Days and various farmers markets contribute to the city’s vibrant community life.

Redmond’s ADU regulations aim to balance residential growth with the preservation of the city’s suburban and tech-centric character. With clear guidelines and a streamlined approval process, Redmond is well-positioned to address housing needs while enhancing its appeal as a thriving and dynamic community.

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