Looking for a civil engineer in Sussex, WI? Describe your project once and up to five licensed civil engineers who work in Sussex and Waukesha County get back to you with a quote. It's free and there is no obligation.
Sussex is home to about 12,607 people (2024 Census Bureau estimate), a growing community (+8.6% since 2020). With 1,492 people per sq mi, it is a suburban area. New homes, commercial buildings and subdivisions here go through site plan review, where a sealed civil plan is often required.
Sussex at a glance
- Population (Census Bureau estimate, 2024)
- 12,607 (+8.6% since 2020)
- Rank in Wisconsin
- 78th of 607 cities and towns
- Land area
- 8.4 sq mi
- Population density
- 1,492 people per sq mi (suburban)
- Type
- Village (Sussex village)
- Main county
- Waukesha County
What to check before hiring in Sussex
- License: in Wisconsin, site, grading and drainage plans are sealed by a Professional Engineer licensed by the state board.
- Survey: have a boundary and topographic survey ready, or ask the engineer to coordinate one.
- Local rules: stormwater standards differ between cities and counties; the engineer designs to the rules where the site is.
- Price drivers: site size, slope, utilities, stormwater requirements and review rounds.
Useful official resources
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NCEES: state licensing boards
Find your state board to check an engineer's license.
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EPA: construction stormwater
Federal stormwater rules for construction sites.
Services available in Sussex
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Site plan, grading and utilities
Civil site plan with grading, utilities and access, sealed by a licensed engineer for the permit.
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Stormwater and drainage design
Drainage calculations and stormwater management design required by the city, county or state.
Frequently asked questions in Sussex
How much does a site plan cost in Sussex, WI?
It depends on the site, the project and the local requirements. Describe your project: engineers who serve Sussex send a proposal.
How long does it take?
Design often takes a few weeks, then the review by the city or county adds time.
Can the engineer handle the permit review?
Most civil engineers respond to review comments and resubmit the plans for you.
Which licensed civil engineers will contact me?
Up to five independent licensed civil engineers who serve Sussex and the surrounding area, chosen for the service you need. Your details are shared only with your consent.
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2024) and Gazetteer Files (public domain), imported on 10/31/2026. Figures describe the incorporated place or county as published; they are shown for information only.