Civil Site Plans & Site Design in Utah
Engineered site plans for Utah residential, commercial, and municipal projects — grading, drainage, utilities, and the permit-ready documentation building departments require.
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Updated May 2026 · By the Ludlow Engineering team
A civil site plan is the engineered drawing that shows how a building, parking lot, road, or development sits on a piece of land — where structures go, how water drains, how utilities connect, and how vehicles and people move through the site. It's the document Utah cities and counties require for nearly every commercial permit, every subdivision, and many residential projects. Ludlow Engineering has been producing engineered site plans and site designs across Utah since 1975. Pricing starts at $1,500; most projects deliver in 2–6 weeks. Call (435) 623-0897 or request a quote online. For our broader civil engineering work, see our civil engineering services overview.
"Site planning" and "site design" are often used interchangeably in everyday conversation. In Utah civil engineering practice, a site plan is the engineered, stamped drawing — the deliverable that goes to the city or county for permit review. Site design is the upstream creative work — figuring out the best layout for a project before drawing it. Most clients need both, and we provide both as part of the same deliverable.
Types of Site Plans We Produce
Different projects need different scopes of site planning work. The most common types we produce for Utah clients:
Residential Site Plans
Site plans for new home construction, additions, accessory dwelling units (ADUs), and detached garages or shops. Required by most Utah cities for residential permits.
Commercial Site Plans
Full commercial site plans for retail, office, restaurant, multi-tenant, and industrial projects — including parking, grading, drainage, utilities, and landscaping.
Subdivision Site Plans
Engineered subdivision plans showing lot layout, road geometry, utility design, and grading. The package county engineers and planning departments require for approval.
Grading & Drainage Plans
Detailed grading and drainage site plans — cut and fill design, finished grades, stormwater routing, and drainage calculations that satisfy Utah's regional engineering standards.
Architectural Site Plans
Site plans coordinated with an architect's building design — combining engineered grading, utilities, and site features with the architectural footprint, scale, and orientation.
Permit-Ready Site Plans
Site plans drafted specifically to satisfy a Utah city or county's specific submittal checklist — the documentation building departments actually accept on first review.
What's in a Civil Site Plan
Every civil site plan we produce includes the components Utah building departments require for permit review. The specific contents depend on project type and jurisdiction, but a typical commercial site plan includes:
- Site boundary with bearings, distances, and reference to recorded survey
- Existing conditions — buildings, utilities, paving, vegetation, contours, and easements currently on the site
- Proposed improvements — buildings, parking, drives, sidewalks, landscaping, and signage
- Building setbacks and zoning compliance verification
- Grading and drainage design — cut/fill, finished contours, stormwater routing
- Utility design — water, sewer, storm drain, gas, electric, telecom routing
- Paving and driveways with geometric design and surface specifications
- Parking layout — count, accessible spaces, and circulation
- Landscaping plan if required by the jurisdiction
- Erosion and sediment control notes and details
- Construction details for non-standard conditions
- Engineer's stamp and signature on every sheet requiring engineering
For sites with significant grade changes, complex drainage requirements, or multiple buildings, the site plan typically incorporates a topographic survey as the foundation document. If you don't have one, we can produce it as part of the same engagement.
Site Design & Engineering Process
Good site design engineering isn't just drafting a plan — it's the upstream creative work of figuring out the best layout before the drawing starts. We work with clients across Utah on full site design engineering, from feasibility analysis through stamped permit-ready drawings.
Typical Site Design Engineering Engagement
For a commercial Utah project, a complete site design engineering engagement typically includes:
- Zoning and setback analysis — what's actually buildable on the lot under current code
- Yield study — for development projects, how many units or how much square footage the site supports
- Schematic site layout — initial conceptual design with 2–3 options for review
- Preliminary engineering — grading, drainage, and utility concepts for the selected option
- Final site plan — engineered, stamped, ready for permit submittal
- Permit support — responding to plan-check comments until approval
For smaller residential projects, the engagement is typically shorter — we go from initial site visit directly to a drafted plan, with one or two review rounds before stamping.
Land Use Planning and Design in Utah
For larger development projects — multi-acre commercial sites, subdivisions, mixed-use developments — site planning shades into land use planning. We provide land use planning and design for Utah projects involving zoning analysis, density studies, infrastructure planning, and coordination with city and county planning departments.
Our Site Plan Process
Every project follows the same general workflow. The exact timeline depends on project type, size, and jurisdiction.
Scoping & Site Visit
We meet with you (in person or by phone), review the property and project goals, and identify what site data is needed. If a survey is required, we coordinate it in-house. Quote goes out within 1–2 business days.
Site Data & Survey
We collect or produce the site data the design requires — boundary survey, topographic survey, soils information, and existing utility records.
Schematic Design
Preliminary site layouts, grading concepts, and utility routing for your review. We iterate until the concept matches your goals and the site's constraints.
Final Site Plan & Engineering
Detailed engineering — grading, drainage, utilities, paving, and landscaping. Construction-ready drawings stamped by a Utah-licensed Professional Engineer.
Permit Submittal & Plan Check
You submit to the relevant Utah city or county. We respond to plan-check comments until the permit is approved. You aren't abandoned at the permit counter.
Utah Site Plan Pricing
Pricing depends on project type, site size, complexity, and how much engineering scope is needed. Typical Ludlow Engineering ranges:
| Project Type | Typical Scope | Typical Price |
|---|---|---|
| Residential site plan | New home, addition, ADU, or shop on existing lot | $1,500 – $3,500 |
| Small commercial site plan | Under 1 acre, single building | $3,000 – $7,500 |
| Medium commercial site plan | 1–5 acres, multiple buildings or features | $6,500 – $15,000 |
| Large commercial / industrial site plan | 5+ acres, complex grading and utilities | $12,000 – $35,000+ |
| Subdivision site plan | Engineered subdivision package | Quoted on scope |
| Grading & drainage plan only | Stand-alone grading/drainage for existing site | $2,000 – $6,500 |
| Permit support & revisions | Plan-check response after submittal | Included or hourly |
All quotes are fixed-fee in writing, with scope of work attached. If site data (boundary or topographic survey) is needed, we can quote that as part of the engagement or work with an existing survey if you have one.
Counties & Cities We Serve
From our Nephi office, our civil engineering team produces site plans across Utah. Most-served areas:
We also work in Davis, Weber, Wasatch, Carbon, Juab, Millard, Iron, and Washington counties. For projects anywhere in Utah, travel costs to outlying jurisdictions are reflected in every quote up front.
Frequently Asked Questions
How much does a civil site plan cost in Utah?
Residential site plans in Utah typically run $1,500–$3,500. Small commercial site plans run $3,000–$7,500. Medium commercial site plans (1–5 acres) run $6,500–$15,000. Larger commercial and industrial site plans start at $12,000. See our pricing table above for the full breakdown.
What's the difference between a site plan and a site design?
"Site planning" and "site design" are often used interchangeably. In civil engineering practice, a site plan is the engineered drawing that goes to the city or county for permit review. Site design is the upstream work — figuring out the best layout for a project before drawing it. Most clients need both, and we provide both as part of the same deliverable.
Do I need a site plan to get a building permit in Utah?
For nearly every commercial permit in Utah, yes. Most cities and counties require an engineered site plan as part of the building permit submittal. Residential permits often require a site plan too — especially for new construction, additions, ADUs, and detached structures. Smaller residential work like interior remodels typically doesn't require one.
How long does it take to produce a site plan?
Residential site plans typically take 2–4 weeks. Commercial site plans run 4–8 weeks. If a new boundary or topographic survey is needed, add 1–3 weeks to the front of the project. Plan-check time at the city or county is on top of that and is outside our control.
Do I need a topographic survey before a site plan?
For sites with significant grade changes, drainage requirements, or new buildings, yes — the site plan needs to be grounded in accurate elevation data. For flat sites with minimal grading work, an existing survey or general field measurements may be sufficient. We tell you up front what's needed for your specific project.
Can you handle the entire permit process?
We produce permit-ready engineered site plans and respond to plan-check comments from the city or county. The actual permit application is typically submitted by the property owner, builder, or developer. We support the process — answering plan-checker questions, providing revisions, and seeing the permit through to approval.
Do you work with builders and developers on multiple projects?
Yes. We work with Utah homebuilders, commercial developers, and architects on ongoing site plan engagements. Volume pricing is available for production residential builders and multi-project commercial work. Call (435) 623-0897 for volume rates.
What if my city has unusual requirements?
Every Utah jurisdiction has its own submittal checklist, preferred drawing format, and reviewer preferences. We've worked with most Utah cities and counties — Salt Lake City, Provo, Lehi, Park City, St. George, and many others — and we draft to the specific requirements of the jurisdiction your project sits in. That's a meaningful part of why our site plans clear plan check faster than out-of-state firms' submittals.
Can you produce a site plan if I already have an architect?
Yes. We coordinate regularly with architects on commercial projects — they handle the building design, we handle the civil site engineering. Our drawings reference and match the architect's footprint, and we coordinate revisions through the design process.
What's the difference between site planning and land development consulting?
Site planning is the engineering and drawing work for a specific project on a defined parcel. Land development consulting is broader — strategic advice on what to build, how to phase it, how to navigate zoning and entitlements, and how to maximize the value of a development. We provide both, and most large development projects involve some of each.