California Coverage · Orange County
Orange County base maps & site data for designers
The existing-conditions base map and pre-design site analysis that normally takes a half-day across county GIS portals and hand-tracing into CAD — for any OC address, from Newport’s bluffs to the Santa Ana foothills, in about a minute.
What Lekua resolves in Orange County
Every layer below is pulled at export time from county, state and national GIS sources the moment you enter an address — no manual tracing, no generic insets, and the sheet cites which source drew each layer.
OC Survey parcel boundary with APN, address, and lot area, with a statewide parcel fallback when the county host is down.
Fine 1–2 ft contours generated on-demand from the 1-meter USGS 3DEP elevation model, with the county’s live 2-ft vector contours as fallback.
OC Survey countywide footprints (a 2018 county capture merged with Microsoft outlines), the county’s hosted 2021 layer behind them, city layers for Anaheim and Irvine, and national outlines for anything they miss: Overture Maps’ mixed mapped and machine-learned outlines where a county cut is imported, otherwise FEMA USA Structures with Microsoft machine-learned outlines where FEMA has none.
The county’s published footprints carry a lidar mean height and a ground elevation per building, with a ridge height where the record has one (about 1% of rows); the heights were computed from 2011 USGS lidar, older than the 2018 outlines, and the sheet states that vintage. Where a record carries no height, the structure is labeled as having none rather than drawn at a confident wrong number. The Anaheim layer publishes a usable height on 80.5% of its footprints, so structures it does not answer fall through to the next source in the chain. The Anaheim layer publishes a usable height on 88.1% of its footprints, so structures it does not answer fall through to the next source in the chain.
Zone code read live from city GIS where published — Santa Ana, Irvine (per-planning-area districts, lookup with citation), Huntington Beach — and Anaheim’s single-family setback table (AMC 18.04.100 Table 4-I) encoded, code-cited and reviewed, so its envelope is drawn.
CAL FIRE FHSZ severity with Zone 0 / 1 / 2 defensible-space perimeters, plus OCFA’s fuel-modification note (up to 170 ft on slopes) flagged where it applies in the canyon and foothill WUI.
USDA SSURGO soil profile, historical rainfall, and modeled seasonal sun-hour heat maps for the parcel.
California natives matched to the site’s soil and microclimate, plus the serving water supplier’s lawn-replacement rebate, shown only while it was verified on the supplier’s own page within 60 days.
Tuned for OC’s canyon and foothill fire interface
The Santa Ana foothills, the canyons, and the coastal hills sit in mapped fire-hazard severity zones, and OCFA’s fuel-modification requirements — up to 170 feet on slopes — shape planting on those parcels. Lekua draws the CAL FIRE Zone 0 / 1 / 2 perimeters, flags the OCFA fuel-mod condition, and filters the plant palette to what each zone allows.
- Zone 0 (0–5 ft ember-resistant), Zone 1 (5–30 ft), and Zone 2 (30–100 ft) perimeters drawn around the structures.
- OCFA fuel-modification note applied where slope and hazard zone trigger it — up to 170 ft.
- Every recommended plant carries a defensible-space zone rating, with flammability from Las Pilitas and UCANR / CAL FIRE-aligned lists.
Zoning setbacks, by jurisdiction
Setbacks in Orange County are set per town, not countywide. Lekua resolves the parcel’s jurisdiction and zone code and encodes each jurisdiction’s adopted setback table, citation and all. Setback rings are drawn only after a table passes independent panel review — until then the export carries the code-cited values with an explicit “unverified” advisory instead of lines we can’t stand behind.
A native palette, enriched beyond the plant list
Start from the Calscape native plant database — then get the research-backed traits Calscape alone doesn’t put at your fingertips, matched to the parcel’s mapped soil, sun, rainfall, and microclimate. Hand a client a list checked against the code, climate-appropriate, and built to perform.
Flammability and defensible-space zone suitability from Las Pilitas burn-time research and UCANR / CAL FIRE-aligned fire-safe lists — not just a name on a list.
Slow / moderate / fast growth plus mature height and spread, so spacing and time-to-fill are realistic from day one.
Calscape cultivation and longevity guidance, so the palette reads for how it performs over 10–20 years, not just at install.
WUCOLS-aligned water-use ratings (for the MWELO budget) and pollinator / bird support scores on every species.
Plant data: Calscape / CNPS, enriched with Las Pilitas burn-time research, UCANR & CAL FIRE-aligned fire-safe lists, and WUCOLS water-use ratings.
Water suppliers
Main water suppliers in Orange County: Municipal Water District of Orange County · Irvine Ranch Water District · City of Santa Ana.
Orange County base map FAQ
Can I get a CAD base map for an Orange County parcel?
Yes. Enter any OC address and export a layered DXF (AutoCAD-compatible) with Orange County parcel lines and building footprints, on-demand 1–2 ft contours, spot elevations, and zoning — plus a designed PDF site report for the client.
What contour interval is available in Orange County?
Lekua generates fine 1–2 ft contours on-demand from the 1-meter USGS 3DEP elevation model, with Orange County’s live 2-ft vector contours as a fallback — hillside-grade relief for the foothill and canyon lots where it matters.
Does it include zoning setbacks for OC cities?
Zone codes are read live from city GIS where published (Santa Ana, Irvine, Huntington Beach), and Anaheim’s single-family setback table (AMC 18.04.100 Table 4-I) is encoded with citations and has passed review, so its envelope is drawn. Setback rings are drawn only after a table passes independent panel review; until then the export carries the code-cited values with an explicit “unverified” advisory and always labels the zone determination honestly.
How does it handle defensible space and OCFA fuel modification?
Lekua draws CAL FIRE Zone 0 / 1 / 2 defensible-space perimeters, flags OCFA’s fuel-modification requirement (up to 170 ft on slopes) where it applies, and tags every recommended native with the zones it’s suited to.
Are the building heights on a Orange County base map measured or assumed?
Measured, wherever the county record carries one. The county’s published footprints carry a lidar mean height and a ground elevation per building, with a ridge height where the record has one (about 1% of rows); the heights were computed from 2011 USGS lidar, older than the 2018 outlines, and the sheet states that vintage. A structure whose record has no height is labeled as having none — the sheet prints an explicit no-data note instead of a plausible number, because a wrong ridge height is worse on a shade study than an admitted gap. The Anaheim layer publishes a usable height on 80.5% of its footprints, so structures it does not answer fall through to the next source in the chain. The Anaheim layer publishes a usable height on 88.1% of its footprints, so structures it does not answer fall through to the next source in the chain.
Is the data current and reliable enough for submittals?
Layers are pulled live from county GIS, USGS, and CAL FIRE at export time, and any encoded setback table cites its source with a date. Everything is labeled “for planning reference — not for construction.” Verify against the current code and a stamped survey before submittal.
Start with a Orange County address
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