H26 Builders

H26 Builders is a Seattle-based ADU contractor specializing in the design, planning, permitting, and construction of Accessory Dwelling Units (ADUs). With extensive knowledge of Seattle’s architectural styles, zoning regulations, and permitting requirements, the company helps homeowners create functional and compliant living spaces that enhance both property value and lifestyle flexibility.

Whether clients are looking to build a detached backyard cottage, add an attached ADU, or convert an existing garage into a livable space, H26 Builders provides practical solutions tailored to each property’s unique characteristics. Their goal is to simplify the ADU development process while delivering high-quality workmanship and personalized service from concept to completion.

ADU Design & Construction Services

H26 Builders focuses exclusively on ADU projects, offering specialized expertise to homeowners throughout the Seattle area.

Services Include

• Attached ADU Construction
• Detached ADU Construction
• Garage Conversions
• Backyard Cottages
• In-Law Suites
• Granny Flats
• Rental Units
• Home Office Conversions
• Space Planning & Layout Design
• ADU Feasibility Assessments
• Permit Assistance
• Construction Management

By concentrating on ADU development, the company helps homeowners maximize the potential of their properties while navigating local requirements efficiently.

Comprehensive ADU Development Support

H26 Builders takes a hands-on approach throughout every stage of the ADU process, helping clients move from initial ideas to completed construction.

Project Support Services

• Free Design Consultation
• ADU Planning & Strategy
• Space Design & Layout Assistance
• Architectural Drawing Support
• 3D Project Renderings
• Permit Application Assistance
• Regulatory Compliance Guidance
• Dedicated Project Management
• Construction Coordination
• Final Project Delivery

Each project is assigned a dedicated project manager who serves as a single point of contact throughout the process.

ADU Solutions Tailored to Your Goals

H26 Builders works with homeowners to determine the best ADU solution based on property constraints, zoning regulations, budget, and intended use.

ADU Types

Attached ADUs

• Extensions connected to the primary residence
• Ideal for multi-generational living
• Efficient use of existing infrastructure

Detached ADUs

• Standalone structures separate from the main home
• Enhanced privacy for occupants
• Excellent rental income opportunities

Garage Conversion ADUs

• Repurpose existing garage structures
• Cost-effective alternative to new construction
• Suitable for guest suites, offices, or rental units

The team helps homeowners evaluate which option best aligns with their goals and property characteristics.

Navigating Seattle ADU Regulations

One of H26 Builders’ key strengths is their familiarity with Seattle’s zoning ordinances, building codes, and permitting processes. They work directly with local authorities to help ensure projects meet applicable regulations and move through approvals as efficiently as possible.

Benefits of Their Local Expertise

• Understanding of Seattle ADU Regulations
• Permit Process Guidance
• Zoning Compliance Support
• Reduced Approval Delays
• Project Feasibility Evaluation
• Streamlined Construction Planning

This expertise helps homeowners avoid common compliance issues that can delay ADU projects.

Why Choose H26 Builders?

H26 Builders focuses on making ADU development more accessible and less overwhelming for homeowners by providing specialized guidance and project management throughout the process.

What Sets H26 Builders Apart

• Seattle ADU Specialists
• Dedicated Project Managers
• Free Design Consultations
• 3D Project Renderings
• Permit Assistance & Coordination
• Architectural Drawing Support
• Local Zoning Expertise
• Personalized Project Planning
• Garage Conversion Specialists
• End-to-End ADU Development Services