Loading Washington (Pierce/King) septic parcels...
Loading WA parcels…
👑 Parcel Perfect WA · Septic As-Built Generator v1.0
Pick a parcel → real lot + soil + neighbors load → Auto-generate a WAC 246-272A code-compliant septic design + B&W plan sheet.
Estimated, NOT a county-stamped document.System Status ›FOR FIRMS · $499/mo ›
Tip: drag the house onto the pad, tune the design, Auto-generate. Select a shape then Delete (or press Delete key) to remove it; Clear all resets.
🧩 Component shelfdrag a chip onto the parcel — or click to drop it — each is auto-titled
Tanks & dist
Field
Site
💰 Your quoteexpand ▾
Install + Material
—
live · tap to expand quote
Design & City Approval· all-in—
Install + Material· live—
Total (est.)—
Fully refundable until you sign · applied to your total.
Install + Material
—
Septic design
-
-
Counties live:loading…
Bedrooms (drives sizing):
Maps your description to WAC 246-272A design-flow rates; edit the rows below to fine-tune.
Soil & site ▾
Pick a parcel — its real SSURGO soil type auto-loads here (wa_parcel_soil, 960k+ parcels classified).
System type ▾
Septic tank ▾
Field geometry ▾
Auto-sized from design flow / loading rate; override to match a real layout.
Sizing overrides ▾
Every value is computed from WAC 246-272A by default. Type a number to hand-spec it; clear the box to revert to recommended. Overrides are honored even below code minimum and are flagged.
Well & reserve ▾
100 ft well setback per WAC 246-272A-0210 (Table IV). Use the 💧 Well tool to place it; for a neighbor well you may place it off the parcel.
Documents & export
Export renders the on-canvas design as a formal B&W engineering as-built sheet (title block, plan, spec table, setbacks, basis). Generate a design to enable.
-
Septic tank-
Daily design flow-
Soil type / loading rate-
Dispersal field-
Field layout-
Setbacks honored-
ESTIMATED reconstruction from published Washington on-site sewage code (WAC 246-272A). NOT a county-stamped permit. No real county record is implied for this parcel.
Leave feedback for this parcel
What you are looking at
▾ toggle
Each Washington parcel is colored by its on-site sewage status (Pierce County = full parcel polygons; King County = confirmed-septic points), from the county wastewater truth tables:
Confirmed septic(on-site + as-built on file)
On septic(on-site sewage, no doc yet)
On sewer
Vacant / unknown
Browse + pan the map for free. Click a green (on-septic) parcel to design its WAC 246-272A as-built; your selected parcel shows a cyan outline.
Toggle any value to filter the live map - non-matching parcels drop out and the rest recolor by that field.
Map classification
Confirmed septic · as-built on file
On septic · no doc yet
On sewer
Vacant / unknown
Selected parcel · cyan outline
Components
House / dwelling - size drives bedrooms
Outbuilding - shed/garage; keep-out only
Pool - keep-out; system places clear of it
Septic tank - settles solids; divider = 2-comp
D-box / dose - splits flow to the field
Drainfield - soaks water into the soil
Reserve area - spare field, code-required
Well - water source
Setbacks (dashed)
10 ft to house · 5 ft property line
100 ft from any well
Dispersal type (field color)
Trench - parallel gravel lines (WA default)
Chamber - gravelless arch rows
Bed - one wide hatched pad
Mound - raised bermed pad
Drip - dotted emitter grid
Design source
Generated design - solid colors, our estimate
Recorded as-built - dashed blueprint, county record
Soil / loading rate
Type 1-2 gravel / coarse sand (highest loading) · Type 3 medium / loamy sand Type 4 sandy loam / loam · Type 5 silt loam / glacial till (default) Type 6-7 clay loam / clay (lowest loading; Type 7 unsuitable). Finer soil = lower Table VIII loading rate = bigger field. Watch for glacial till / hardpan, bedrock, and seasonal high groundwater.
Not sure? Just press Auto-generate - it places a code-correct design for you.
▴ collapse pane
Drawing tools failed to load from CDN. Falling back to drag-the-house mode; auto-generate + sheet still work.
⚙️
Generating design…
Large / complex parcel - this can take a few seconds.
⏳ Auto-generating in 5s- adjust buildings to reset, or
Start your septic project
One firm, three options: pump, permitted design, and install. Put down a fully refundable deposit to lock your spot — it applies to your total.
Secure checkout by Stripe — fully refundable until you sign. A team member confirms scope & schedule before any work begins.
🔒
Unlock the full as-built
This is part of the paid tool. You can see it's here. Upgrade to generate the design, open the county documents, and export the engineer-grade PDF + CAD file.
Auto-generate a code-compliant septic design
Open the real recorded county documents (PDF)
Export the engineer-grade as-built PDF + editable CAD/DXF
📂 Saved parcel designs
×
Saved in this browser (no login needed). Will sync to your account when sign-in is added.