Municipal inspectors across Kirkland, Redmond, and Issaquah require clear documentation of grading, drainage, and Rainwise tie-ins before sign-off. Osprey Exterior’s compliance team prepares submittals, as-built drawings, and maintenance manuals so your project stays on schedule.
Use this blueprint to align homeowners, builders, and inspectors—and convert compliance prep into a lead funnel for bundled services.
What inspectors expect before they arrive
- Drainage layout: Updated site plan with roof runoff paths, French drains, and cistern overflow.
- Grading verification: Laser level readings or survey notes showing slopes direct water away from structures.
- Maintenance agreements: Homeowner signatures acknowledging upkeep of cistern filters, gutters, and drainage basins.
- Photo documentation: Progress photos of underground piping, backfill, and erosion controls.
Our compliance coordinators assemble these materials alongside Rainwise paperwork, ensuring rebates and inspections use consistent data.



Compliance audit checklist & scheduler
Complete the interactive checklist below. Enter your email to receive a downloadable PDF with documentation templates and Rainwise submission reminders.
Stormwater compliance guide highlights
Our stormwater compliance guide outlines city-specific nuances. Here’s how we apply it to Eastside projects:
- Kirkland: Focus on infiltration trench sizing, erosion controls, and tree protection zones.
- Redmond: Provide calculations demonstrating roof area offsets and rain garden plant selections.
- Issaquah: Document steep-slope mitigation and coordinate Rainwise rebates for neighborhoods inside SPU basins.
Each plan includes cross-links to city resources and inspection contacts so homeowners know who will review their project.
Drainage services that keep inspections on track
We tailor drainage upgrades based on soil conditions and inspection requirements:
French drains
Capture downspout discharge and foundation seepage, critical for Bellevue and Issaquah hillside lots.
Regrading & swales
Redirect surface water away from structures while meeting Kirkland stormwater slope requirements.
Cistern overflow tie-ins
Connect Rainwise storage to daylighting or drywells to prevent pooling and protect landscaping.
Case study: Issaquah drainage upgrade
An Issaquah homeowner combined Rainwise rebates with drainage work to meet final inspection deadlines. We regraded the side yard, installed modular cistern storage, and submitted photos within hours of inspection. The project closed on schedule and Rainwise issued the rebate the same week.
“Our compliance audit flagged missing drainage details. Osprey stepped in, added French drains, updated the Rainwise paperwork, and the city signed off the next day.”
— Aaron L., Issaquah homeowner
How to ensure your property is compliance-ready
- Complete the checklist above and gather supporting documents.
- Book a compliance audit so we can inspect grading, gutters, and cistern connections.
- Schedule any recommended drainage upgrades before booking final inspections.
- Let Osprey submit Rainwise and municipal paperwork within 24 hours of completion.
Following these steps keeps your project compliant, accelerates rebates, and generates referrals from homeowners who experience a streamlined process.