Site Plans & Engineering
Site Plans & Civil Engineering
Site plans, grading plans, drainage design and stormwater management prepared by licensed civil engineers and coordinated with the rest of the project.
Overview
A site plan shows how a building sits on its property: where it goes, how vehicles and people get to it, how utilities connect, and where water goes when it rains. In Florida, with heavy rainfall, flat terrain and high water tables in many areas, drainage and stormwater design often shape the site as much as the building does.
Civil engineering work – site plans, grading and drainage plans, stormwater calculations and utility layouts – is prepared, signed and sealed by a licensed civil engineer. We coordinate their work with the survey, the architectural design, the geotechnical report and the construction sequence, so the plan that gets approved is one that can be built without surprises.
If you already have a civil engineer or approved site plans, we work from those documents and coordinate any changes with the engineer of record.
Who it’s for
- Owners building a new home on a lot that needs grading, drainage or fill
- Commercial projects requiring site plan approval, parking, utilities and stormwater permits
- Additions, pools or hardscape that change how water drains across a property
- Properties with existing drainage or yard flooding issues being addressed as part of a project
- Developments where water management district or local stormwater requirements apply
What’s included
Typically included
- Site plan layout of buildings, driveways, parking, walks and setbacks
- Grading plans with finished floor elevations, spot grades and slopes away from the structure
- Drainage design: swales, inlets, pipes, retention or detention areas
- Stormwater calculations and permit documents where the jurisdiction or water management district requires them
- Utility plans for water, sewer or septic, and connections to public systems
- Erosion and sediment control plans for construction
- Coordination with survey, geotechnical findings and architectural plans
- Responses to reviewer comments and construction-phase questions through the engineer
Common exclusions
- Surveys and geotechnical investigations, coordinated as separate scopes
- Traffic studies, environmental permitting or wetland mitigation, unless scoped separately
- Utility company connection and impact fees
- Off-site improvements required as conditions of approval, priced once known
- Landscape architecture, unless included in the site design scope
Every proposal lists its own inclusions and exclusions in writing.
Materials, design options & upgrades
How pricing works
Civil engineering is priced per project. The engineer’s fee is based on site size, the type of approvals needed and the complexity of drainage and utilities; we include their proposal in the estimate as a distinct line, alongside our coordination.
The construction cost of site work – earthwork, drainage structures, paving and utilities – is estimated from the civil drawings once they are developed. When civil engineering is part of a complete project, it is priced within that project’s budget.
What changes the cost
- Site size and existing topography
- Residential lot plan versus commercial site plan approval
- Stormwater permitting requirements from the jurisdiction or water management district
- Soil conditions and water table from the geotechnical report
- Utility availability: public water and sewer versus well and septic
- Flood zone and required floor elevations
- Number of review cycles and conditions of approval
If this work is part of a larger project, it’s priced within that project’s budget — please don’t add separate estimates together. Read the pricing guide.
Typical stages
Base information
The survey, geotechnical report and architectural footprint are gathered for the civil engineer.
Concept site plan
Building placement, access, parking and drainage approach are laid out and reviewed against budget.
Engineering design
The civil engineer develops grading, drainage, stormwater and utility plans with supporting calculations.
Review and approval
Plans are submitted to the reviewing agencies and comments are answered through the engineer.
Construction
Site work is built to the approved plans, with questions routed to the engineer of record.
As-built and closeout
Final grades and drainage are surveyed and certified where the approval requires it.
What affects the schedule
- Availability of a current survey and geotechnical report
- Agency review cycles for site plans and stormwater permits
- Conditions of approval that require plan revisions
- Rainy-season weather, which affects both site work and testing
Questions & answers
Does a single-family home need civil engineering?
Not always, but many do – particularly on lots that need fill, have drainage issues, or are in areas where the building department requires a grading and drainage plan. We confirm requirements for your site early.
Why does drainage matter so much?
Water that is not directed away from a building can cause flooding, foundation problems and erosion, and can affect neighboring properties. A proper grading and drainage plan sets elevations and paths so water goes where it should.
Can you work with my civil engineer?
Yes. If you have an engineer or approved plans, we coordinate with the engineer of record and build to their design.
Start here
Planning site plans & civil engineering?
A short form — three steps, a few minutes. Share plans or photos if you have them. We’ll review it and follow up using the contact details you provide.