Contractor Resources

Being a RainWise Contractor

Access the RainWise Orientation Course, onboarding materials, and key policies to become a RainWise contractor. Stay up to date on program news, events, and updates.

Become a RainWise Contractor

Start Here

1. Complete the Become a RainWise Contractor online course.
2. Register for an in-person site tour.

3. Submit required documentation and fill out the RainWise Contractor Onboarding Form.

Site tour sign-up is available at the end of the online course. After you complete the tour, we’ll send you a link to the onboarding form.

RainWise Participation Criteria (PDF)

Licensing Information

• Seattle Business License
• Washington State Business License
• Register as a Contractor – Washington State L&I
• Form W-9 (PDF)

Contractor Events, Updates, & Newsletter

Sign Up for Events

• Upcoming Outreach Events: Attend an outreach event to meet potential RainWise customers
  

Update My Public Profile

• Contractor Profile Form

Contractor Newsletter

• Current Contractor Newsletter: Rebate Increase and New Basin Coming!
• Newsletter Archive

RainWise Program & Policies

Program Requirements

• RainWise Participation Criteria (PDF)

Program Policies

• RainWise Complaint Policy (PDF)

Additional Program Information

• Contractor Reference Packet (PDF)
• RainWise Basin Map (PDF)

RainWise Projects

All the tools and documents you’ll need to plan, design, and complete RainWise installations, from site inspections and planting plans to the rebate paperwork and required forms.

Planning & Design

Design Requirements & Guides

• RainWise Design Specifications (PDF)
• Feasibility Inspection Guide (PDF)
• Installing a Pump to a Cistern (PDF)
• Side Sewer Guidance (PDF)

Planting & Materials

• RainWise Planting Plan (PDF)
• Vendors for RainWise Supplies (PDF)

Before you Start: Project Paperwork

Required Pre-Construction Forms & Guides

• How to Request Inspections (PDF)
• Customer Understanding Form (PDF)
• Infiltration Test and Certification (PDF)
• Sample Site Plan (PDF)
• Web-based Rebate Calculator

Project Complete: Rebate Paperwork

Rebate Paperwork Overview (PDF)

Required Rebate Paperwork

• Rebate Paperwork Checklist (PDF)
• RainWise Rebate Form (PDF)
• Property Owner Agreement (PDF)
• VPO (PDF) OR W-9 (PDF)
• Warranty & System Function Forms (choose based on project)
  • Rain Garden Warranty Form (PDF)
  • Cistern Warranty Form (PDF)
  • Rain Garden Function Form (PDF)
  • Cistern Function Form (PDF)
  • Rockery Release Form (PDF)
  • Infiltration Test and Certification (PDF)

Consolidated Packet

• Rebate Paperwork Packet – Customer Forms (PDF)

Additional Required Items

• Pre-inspection report, Post-inspection report, Final site plan, Invoice

Submit Paperwork to rainwise@seattle.gov (preferred) or mail to: SPU: RainWise, 700 5th Avenue, Suite 4900, P.O. Box 34018, Seattle, WA 98124-4018

Resources for Contractors and their Customers

Outreach, education, and maintenance tools you can share with homeowners. Includes marketing materials, language-accessible resources, funding opportunities, and maintenance guides.

Financial Support

Financial Assistance

• Vendor Payment Option (VPO) Form (PDF)
• RainWise Access Grant
• GSI Mini-Grant (non-RainWise)

Marketing Materials

RainWise FAQs 

• RainWise FAQs – English (PDF)

RainWise One Pager

• RainWise One Pager – English (PDF)
• RainWise One Pager – Spanish (PDF)
• RainWise One Pager – Vietnamese (PDF)
• RainWise One Pager – Traditional Chinese (PDF)
• RainWise One Pager – Somali (PDF)
• RainWise One Pager – Tigrayan (PDF)

Cistern Fact Sheet

• Cistern Fact Sheet – English (PDF)
• Cistern Fact Sheet – Cambodian (PDF)
•  Cistern Fact Sheet – Traditional Chinese (PDF)

Outreach Materials

• Door hanger (coming soon)
• Contractor logos (coming soon)

Maintenance Resources

Maintenance Information

• RainWise Maintenance Page
• Brochure: Sightline Institute: Using Cistern Water for Edibles (PDF)

Maintenance Guide

• Maintenance Guide – English (PDF)
• Maintenance Guide – Spanish (PDF)
• Maintenance Guide – Vietnamese (PDF)
• Maintenance Guide – Traditional Chinese (PDF)
• Maintenance Guide – Somali (PDF)
• Maintenance Guide – Tigrayan (PDF)

General Learning & Other Resources

Build your knowledge and stay informed. Explore professional development, GSI standards, Seattle stormwater codes, and helpful guides for expanding your business.

Contractor Skill-Building

Professional Development

The Contractor Skill-Building page supports contractors in improving their skills, capacity, and success with RainWise projects.

• Visit the Skill-Building Page

Other GSI Resources

GSI Standards & Codes

• Seattle Stormwater Code (PDF)
• Rain Garden Handbook (PDF) 
• Seattle ROW Improvements Manual
• Seattle Standard Specifications and Plans
• Seattle Side Sewer Permit Requirements
• Seattle Director’s Rules
• Seattle Land Use Code

Additional GSI Resources

• 12000 Rain Gardens – Resources

General Business Resources

Licensing Information

• Seattle Business License
• Washington State Business License
• Register as a Contractor – Washington State L&I
• Form W-9 (PDF)

Questions? Email rainwise@seattle.gov