Civil Site Plans That Keep Projects Moving.
Crowther Engineering handles the site side of your project — grading, drainage, access, utilities, and site planning — so civil issues are identified early instead of delaying permits, redesign, or construction.
We work with builders, homeowners, architects, contractors, and developers across Arizona, Southern Utah, Nevada, and Texas. Whether it is a single-lot grading and drainage plan, a small subdivision, or a larger land-development project, clients work directly with a licensed civil engineer from early feasibility through permit-level design.
Single-lot Grading and Drainage Plans
We provide grading and drainage plans for single-family homes, including steep and sloped lots, where access and storm flow require extra care to get right. Our plans are built to get through plan review, so your project keeps moving.
Subdivision & Master-Planned Community
Crowther Engineering provides civil design for residential subdivisions, phased developments, and master-planned communities.
Our work includes grading, drainage, utilities, roadway layout, drainage/retention planning, utility extensions, access coordination, phasing support, entitlement exhibits, and permit-level civil plans.
For larger land-development projects, early civil input can affect lot yield, site cost, drainage strategy, utility layout, off-site improvements, and entitlement timing. We help identify those issues early and produce the plans needed to move the project forward.
Lot Splits & Land Development
Before you split a parcel or lay out a small development, you need to know what the site can actually support. We provide civil feasibility review, preliminary layout input, grading and drainage planning, utility coordination, access review, drainage/retention concepts, and permit-level civil plans to help move the project from concept to submittal.
Small Commercial & Site Work
Crowther Engineering provides civil/site engineering for small commercial and site-development projects, from early feasibility through permit-level plans.
Project types include small commercial buildings, office and retail sites, restaurants, contractor yards, industrial/flex sites, storage units, RV parks, mobile home / manufactured home parks, and other site-driven development projects.
Our work includes grading and drainage, access and circulation, utility coordination, drainage/retention concepts, site planning input, and permit-level civil plans to help move the project from concept to approval.
Markets We Serve
Crowther Engineering provides civil/site engineering services across Arizona, Utah, Nevada, and Texas.
Primary service areas include Sedona, Yavapai County, the greater Phoenix area, St. George, Southern Utah, Mesquite, Las Vegas, and Texas.
We support single-lot grading and drainage plans, lot splits, small subdivisions, commercial site plans, and larger land-development projects.