Site civil engineering, feasibility through closeout.
Grading, stormwater, utilities, ADA, and fire access — permit-ready drawings for developers, architects, and public agencies across California, Oregon, and Hawaii.
Site civil is a coordination discipline as much as an engineering one. The grading plan has to match the stormwater facility, which has to work with the utility crossings, which have to land in a trench the architect can live with. Calichi runs all of it in-house — one engineering team, one stamped set, submittal-ready for every agency from PG&E to your local building department.
Every framework, every jurisdiction.
Civil engineering at every scale.
K-12 campuses, affordable housing, mixed-use mid-rises, transit stations, industrial warehouses, and hospitality. 400+ projects delivered across 42 states.
See the full portfolio →Due diligence through as-built.
Hover any service for the full scope. Every item below is standard Calichi practice — not a menu, not an upsell.
Pre-Design
- Due Diligence Reports & Constraints MapsSite constraints mapped before design starts.
- Entitlement Coordination & DesignTentative maps, CUPs, planning submittals.
- Site Planning & Efficiency OptimizationLayout tested for yield, code, and cost.
- Subdivision, Condo & Townhome MappingTentative and final maps, recorder-ready.
Design
- Site Civil & GradingGrading, earthwork, retaining walls, cut/fill.
- Stormwater ManagementC.3, LID, PDP, BES — every framework.
- Hydrology & Hydraulic ModelingDrainage calcs and pipe sizing in-house.
- Hydromodification (HMP)Continuous simulation and HMP sizing.
- Water System Design & ModelingEPAnet modeling, fire flow, domestic pressure.
- Sanitary Sewer & Storm Drain DesignCollection systems and service connections.
- Site ADA & CBC Chapter 11B CompliancePath of travel, accessible parking, ramps.
- Fire Access & Fire Marshal CoordinationAccess roads, turnarounds, hydrant placement.
- Permitting Assistance & CoordinationPlan check responses and resubmittals.
Construction
- SWPPP & Erosion ControlRUSLE calcs, BMP selection, QSD sign-off.
- Peer Review & 3rd Party ReviewsFind issues before plan check does.
- Construction AdministrationRFIs and field revisions by engineer of record.
- As-Built DrawingsRecord drawings of what was built.
Civil engineering lives at the intersection of every other discipline on the project.
The grading plan has to match the architectural floor elevations. The stormwater facility has to work with the landscape palette and the utility crossings. The ADA path of travel has to land on curb ramps that match the surveyor's monuments and the fire marshal's access radius.
Calichi handles all of this as one engineering team. MRP C.3, Ch. 11B, DSA, CFC, BES PSMM, HAR 11-62 — we stamp each deliverable because we calculated it, not because we outsourced it.
The result: one stamped set, one engineer answering RFIs, and a plan check cycle that closes instead of opening new questions every round. Architects get their site details, developers get their entitlements, and the contractor gets a drawing that builds.
Reading on site civil engineering.
What Is C.3 Stormwater? A Plain-English Explanation
The Bay Area's stormwater compliance framework, explained for developers and architects.
How Long Does DSA Really Take? Grab a Chair.
The honest timeline for DSA plan review on California K-12 projects.
How to Calculate ADA Parking Requirements
Get this wrong and plan check sends it back. CBC table, stall math, common mistakes.
Tell us about your project.
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