Sometimes yes, sometimes no.
Typically no permit needed for:
- Basic patio slabs
- Standard driveway replacement (same footprint)
You may need a permit if:
- You’re changing drainage
- Increasing impervious surface area
- Working in setbacks
- Tying into the right-of-way (driveway apron)
Seattle-specific considerations
Stormwater rules matter
Seattle is strict on runoff. Larger hardscape projects can trigger drainage requirements.
Right-of-way work
Anything touching the street or sidewalk usually requires city approval.
Slopes and grading
Significant grading can trigger review.
Practical advice
If it’s a simple patio, you’re usually fine.
If it affects drainage or connects to the street, check first—it’s way easier than fixing it later.
6. Concrete vs pavers in Seattle: cost, drainage, and long-term maintenance
This is one of the most common decisions.
Cost comparison (Seattle)
Concrete
- $12–$22/sf
- Lower upfront cost
Pavers
- $18–$35/sf
- Higher upfront, more labor
Drainage
Concrete
- Needs proper slope
- Can pool water if done poorly
Pavers
- Naturally drain through joints
- Better for wet conditions if installed right
Maintenance
Concrete
- Low maintenance
- Can crack over time
- Harder to repair invisibly
Pavers
- Joints need maintenance (sand, weeds)
- Easy to repair sections
- Can shift if base isn’t solid
Longevity
Both last a long time if installed correctly.
Most failures in Seattle come from poor base prep—not the material itself.
My take
- Want clean, simple, lower cost → Concrete
- Want flexibility, drainage, higher-end look → Pavers
If you want to take this further
I can:
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