Site planning tools
Checkers and calculators built on the statutes and codes our research verified. Each tool shows its method, its rule table with sources and a worked example, and says plainly where a rule is not verified in our research.
- checkerADU law checker
An ADU law checker: the statewide ADU status on the filing date, the verified by-right, size, setback, parking, owner-occupancy and fee rules, and verified city rules, each cited.
- lookupParking requirements lookup
A parking requirements lookup: the minimum and maximum off-street parking a city's code sets for a use, computed from its own table, with no-minimum cities, mapped areas and state preemptions, each cited.
- calculatorRV park and campground calculator
An RV park and campground calculator: sites per acre against verified density caps, with approvals as evidence, NEC 551 electrical load, state design flows and review thresholds, fixtures, PM peak trips and road widths, each cited.
- calculatorCar wash site and stacking calculator
A car wash stacking calculator: the code stacking minimum by jurisdiction, a 95th-percentile queue from the design arrival and service rates, ITE PM peak trips, and state traffic study triggers and turn-lane warrants, each cited.
- calculatorGas station and c-store site fit calculator
A gas station and c-store calculator: ITE PM peak trips by store size band, a county trip equation, state traffic study triggers and turn-lane warrants, UST program agencies, dispenser separations, parking rows and truck design vehicles, each cited.
- calculatorHotel site size calculator
A hotel site size calculator: a site range in acres scaled from labelled brand prototypes and approvals, the city's own hotel parking minimum, ITE land use 310 trips and the IFC aerial fire access check, each cited.
- checkerDo I need a stamped site plan?
A stamped site plan checker: by state and stage, the verified rules that require a seal, accept an unsealed plan or exempt a building from the architect or engineer, each cited to its statute, rule or ordinance.
- mapADU state law map
A 50-state ADU law map: the statewide ADU status our research verified in each state, the by-right, size, setback, parking and fee provisions of each law, cited, and every other state marked not verified.
- mapApproval deadline map
A 50-state map of statutory review deadlines: the decision period, day type, start trigger and consequence of every clock our research verified, cited, with every other state marked not verified.
- mapUnderground storage tank agency map
A 50-state map of underground storage tank program agencies, with state dispenser separations where a state sets them, each cited to the agency or code, and every other state marked not verified.
- mapTraffic study trigger map
A 50-state map of traffic impact study triggers: the trip thresholds state transportation departments set, with the unit, tier and condition of each, cited, and every other state marked not verified.
Rules as researched on October 11, 2026
Start a project
Bring us the site. We draw the first plan.
Send the parcel, the program and anything you already have: a survey, a sketch, a zoning letter. The studio returns a preliminary site plan your engineer of record can build on.