Submit the Addition/Alteration permit to Renton CED

This is the big submittal — everything you've paid for over the last 4–7 months finally goes to Renton CED for review. The mechanics are your designer's job; your job is to fund the intake fees and brace for the correction loop later in this phase. "Plan review" just means Renton CED's reviewers reading your set and writing back questions. One to two rounds is typical here — Renton's process is generally leaner than Seattle's.

How Renton CED permitting works

Renton's permit portal is the Civic Access Self-Service Portal (CASSP) at permitting.rentonwa.gov. All documents are submitted electronically — no paper accepted.

Contact: [email protected], 425-430-7215. Physical address: 1055 S Grady Way, 7th Floor, Renton WA 98057.

What gets submitted

A complete Renton CED Addition/Alteration submittal typically includes:

• Cover sheet — project address, scope summary, applicant info, designer of record, declared construction value.
• Architectural set — site plan, existing-conditions plans/elevations, proposed plans/elevations/sections.
• Structural set — stamped drawings + calcs (separate PDF).
• Survey — stamped boundary + topographic survey.
• Energy compliance package — WSU WSEC-R Alterations & Remodels form or REScheck report.
• Geotechnical report (if in Coal Mine Hazard Area or seismic hazard zone per RMC 4-3-050).
• Soils report (if required by structural engineer).
• Asbestos and lead survey results (recommended; required if abatement is in scope).

Fees

Renton's permit fees are set by the 2025-2026 fee schedule. For an addition/alteration scope, a typical permit package has three components:

1. Building permit fee — valuation-based. For a project valued between $100,001 and $500,000, the 2025 fee is $1,589.40 + $8.90 per $1,000 of valuation above $100,000. Worked examples on the 2025 schedule:

• $300,000 valuation → $1,589.40 + ($8.90 × 200) = $3,369.40
• $500,000 valuation → $1,589.40 + ($8.90 × 400) = $5,149.40
• $600,000 valuation (above $500K, different formula) → $5,149.40 + ($7.56 × 100) = $5,905.40

The 2026 schedule increases each band by roughly 3%.

2. Plan check fee — 65% of the building permit fee. Includes three review cycles. So at a $500K valuation: 65% × $5,149.40 = $3,347.

3. Sub-permit fees — one per trade, paid separately when each sub pulls their permit:

• Residential mechanical permit: $67 base (2025) / $69 (2026) + itemized fees per fixture/unit.
• Residential plumbing permit: $67 base (2025) / $69 (2026) + itemized fees per fixture.
• Residential electrical permit (new service): $277 (2025) / $286 (2026) for up to 200 AMP; $294 / $303 for over 200 AMP. Service changes and circuit additions are scheduled separately.
• Each sub-permit also carries a plan check at 40% of the permit fee.

Bottom line for a typical $300K–$600K whole-house remodel + addition: roughly $7,000 – $12,000 in total Renton permit fees, before any tree-review or critical-areas-review fees that may apply (those are scheduled separately in Section XII of the fee schedule).

Confirm the specific values for your project at submittal — Renton publishes a new fee schedule each year and the exact band rates change.

Plan review timeline

No official Renton CED plan review turnaround time was confirmed from a primary source. A contractor blog (low-confidence secondary source) cites 2–6 weeks. Ask Renton CED directly at the pre-application meeting for current first-review turnaround.