Written by: Paul Foster, Founder, CEO, OnePlan
Key Takeaways for County Fair Permit Maps
- County fair organizers must produce a to-scale site diagram that satisfies fire marshals, ADA reviewers, and public-works departments within tight deadlines.
- Traditional tools like PowerPoint, Excel, or Google Maps screenshots create inaccurate layouts that cause failed inspections and costly last-minute revisions.
- A geo-accurate, to-scale permit map gives every reviewer a single, measurable diagram they can trust, which reduces revision cycles and the risk of event shutdowns.
- This five-step workflow covers gathering site dimensions, choosing a geo-accurate base map, placing structures and safety elements to scale, running capacity checks, and exporting submission-ready maps and a Bill of Quantities.
- OnePlan provides a live, zoomable satellite map and drag-and-drop tools that keep every object geo-accurate, helping teams produce compliant permit maps faster, book a demo today.
Step 1: Gather Site Dimensions and Existing Drawings
Collect all spatial data before you open any planning tool so you avoid guesswork during design. This preparation prevents mid-project rework and keeps your layout grounded in verified measurements.
Request the fairground’s recorded plat, survey, or deed from the property owner or county assessor. These documents provide verified property boundaries, lot dimensions, and any known easements, such as utility, drainage, or access rights-of-way, that restrict where temporary structures can sit. Known easements must appear on the submitted site plan because a structure can meet zoning setbacks yet still be prohibited if it overlaps an easement.
Collect any existing drawings of permanent infrastructure, including buildings, utility connections, hydrant locations, and paved access roads. If the fairground has hosted previous events, request last year’s approved permit map as a reference. Note the locations of fire department connections and building exits, since both must appear on the final submission.
Common pitfall: teams rely on a Google Maps screenshot for dimensions. Satellite imagery helps with orientation but does not replace surveyed measurements. Discrepancies between a screenshot-based plan and the actual site remain a leading cause of revision requests from fire marshals.
Step 2: Choose a Geo-Accurate Base Map
Set up a planning canvas that is already to scale so every object you place reflects real-world dimensions without manual conversion. This foundation keeps measurements consistent from the first draft through final approval.
A geo-accurate base map, whether satellite, street, or aerial, anchors your plan to the actual coordinates of the fairground. West Jordan City, Utah, for example, requires site plans drawn to scale with added detail for parking, pedestrian circulation, and utility locations. A graphic scale bar is also recommended because it remains measurable when a PDF prints at a different size.
OnePlan’s canvas uses a live, zoomable satellite or street map built on leading GIS technology. Because the map is embedded rather than screenshotted, everything placed on it stays geo-accurate and to scale at any zoom level. Teams at the City of Greater Dandenong previously built site plans in Microsoft Word with added symbols, which produced outdated maps and imprecise emergency location markings. After switching to OnePlan, their measuring tool became essential for setting accurate safety exclusion zones without repeated site visits.
If you have an existing floor plan, drone photo, or CAD-derived file, convert it to .png and import it into OnePlan. Scale it onto the map and plan directly on top of it to turn a static document into a reusable base map that you can refine over time.
Common pitfall: planners sometimes use an aerial image that predates recent construction. Always verify that the base map reflects the current state of the site before you place any structures.
Step 3: Place Temporary Structures, Fire Lanes, ADA Routes, Generators, and Restrooms to Scale
With your geo-accurate base map established, you can now place every required element with confidence that dimensions will remain accurate throughout the design process. This step populates the site plan with all elements that permitting reviewers expect to see, placed at accurate dimensions and labeled clearly.
Place fire lanes first because they constrain everything else. Under California Fire Code Chapter 5 Section 503.2.1, fire lanes must be at minimum 20 feet wide, clear of all obstructions, with a minimum 13.5 feet of vertical clearance. Fire lane requirements vary by jurisdiction, so confirm the exact requirement with your local fire marshal before you finalize dimensions.
Place tents and temporary structures next. The International Fire Code requires tents and canopies to be separated from other tents, canopies, and structures. Cooking tents require additional separation, and the Salt Lake City Fire Department requires a 10-foot separation for cooking tents used in an aggregate configuration.
For ADA routes, the accessible route must connect accessible parking to the event entrance, key activity areas, accessible restrooms, and accessible exits, with a minimum clear width of 36 inches except that it may be reduced to 32 inches for a length of 24 inches maximum under specified conditions. Any gate or opening along the accessible route must provide at least 32 inches of clear width. At least 5% of portable toilet units must be ADA-accessible, with a minimum of one unit regardless of total count.
In OnePlan, every object, including tents, stages, generators, portable restrooms, crowd barriers, fencing, and signage, is drag-and-drop and custom-sizable. A tent placed at 40 by 60 feet stays correct as you zoom. The Bearfoot Productions team completed the design for a new 10,000-capacity festival with only two site visits by using OnePlan to validate layouts remotely. The Cheese & Chilli Festival previously had to make layout changes on-site because plans were not to scale. With OnePlan, they now build accurate, detailed, professional-looking event site plans without a complex CAD package.
Step 4: Run Area and Crowd-Capacity Checks
Confirm that every designated area, including crowd zones, seating sections, and vendor rows, meets the capacity and clearance figures you will present to permitting reviewers. This validation gives you documented numbers instead of rough estimates.
Outline any crowd area in OnePlan and the area and perimeter calculator instantly returns its size in square feet. Use OnePlan’s free arrival calculator and exit calculator to estimate queue lengths, queue times, and exit flow rates for your ingress and egress points.
Aisles between rows of chairs at events must meet minimum width requirements, and the common path of egress travel from any seat must stay within applicable limits. Verify equivalent figures with your local fire marshal because these dimensions vary by jurisdiction and adopted fire code edition.
The Bearfoot Productions team uses OnePlan’s crowd capacity calculator to confirm that a visual shape on the plan can hold a target number of people at a chosen density. This approach produces a defensible, documented figure rather than an estimate made by eye.
Common pitfall: some teams calculate crowd capacity for the entire fairground footprint rather than the net usable area after fire lanes, ADA routes, vendor footprints, and structure setbacks are removed. Always run capacity checks on the residual crowd area, not the gross site area.
Step 5: Export High-Resolution Maps and a Bill of Quantities for Submission
Produce the exact deliverables that permitting offices, fire marshals, and ADA reviewers expect to receive. Clear exports and structured inventories keep your submission complete and easy to review.
OnePlan exports plans to high-resolution PNG, print-ready up to A0 size, with a separate legend generator. Every object placed on the map also saves automatically to a back-end dashboard as a structured inventory. The Bill of Quantities exports to Excel or CSV and lists every item, including tents, barriers, generators, portable restrooms, and signage, with quantities and dimensions. This process turns a finished map into an accurate procurement and permitting document without re-keying data.
Every professional permit site plan includes a title block containing the project address, owner name and contact, designer or preparer name and contact, date of preparation, revision history, sheet number, drawing scale, and brief project description. Include a revision date on every exported map so reviewers can confirm they are examining the most current version.
The North Texas Tribute Jam shared detailed plans for roadblocks, crowd control, and traffic management with the City of Lewisville’s Health and Safety Department, which helped approvals arrive quickly and without repeated revision cycles. Eagle Mountain City cut planning time from 8–10 hours down to a few hours per event by producing one comprehensive, to-scale map instead of separate layouts for fire, police, and facilities departments.
Universal Requirements Checklist for County Fair Site Plans
Use this checklist as a starting framework and adapt it to your local permitting authority’s exact requirements. It consolidates elements that appear across multiple jurisdictions.
- Property and boundaries: property lines with dimensions, lot area, north arrow, drawing scale with graphic scale bar, adjacent street names, title block with revision date
- Existing infrastructure: permanent buildings labeled with use and dimensions, utility connections, fire hydrant locations, fire department connections, building exits
- Temporary structures: tents, stages, inflatables, trailers, and canopies with footprint dimensions, intended use, and separation distances to adjacent structures and property lines
- Fire lanes and emergency access: minimum 20-foot-wide fire lane (verify locally), 13.5-foot vertical clearance, turnaround areas at dead ends, lane surfaces capable of supporting emergency apparatus weight
- ADA routes: accessible route connecting parking, entrance, activity areas, restrooms, and exits, minimum 36-inch clear width throughout, ramp slopes no steeper than 1:12, ADA-accessible restroom units integrated with main cluster
- Egress and crowd flow: all exit points labeled with dimensions, aisle widths, egress path clearances, illuminated exit sign locations
- Utilities and services: generator locations, temporary power connections, water supply, portable restroom locations and quantities, trash bin locations
- Vendors and open-flame areas: mobile vendor locations, cooking tent separation distances, open-flame activity zones
- Parking and traffic: parking layout with stall dimensions, pedestrian circulation paths, driveway and access road locations, road closure points
- Setbacks and easements: setback distances from all property lines, known utility or drainage easements shown and labeled
Manual Tools vs OnePlan for Permit Maps
Teams that build permit maps in PowerPoint, Excel, or Google Maps screenshots often spend 8–10 hours producing a single diagram, then discover on-site that structures do not fit as drawn. Revision cycles with fire marshals and ADA reviewers add days or weeks to an already compressed timeline. Large public gatherings of 1,000 or more people can require 8–12 weeks for permit review, so a non-compliant first submission can push an event past its approval deadline entirely.
CAD software produces accurate drawings but requires specialist training, carries significant licensing costs, and targets engineers rather than events and operations professionals. Most county fair teams do not have a CAD drafter on staff, so outsourcing adds both cost and turnaround time. The Greater Dandenong case mentioned earlier illustrates this challenge, since their Word-based workflow could not deliver the precision that permit reviewers required.
OnePlan occupies the middle ground. It is as easy to pick up as a non-specialist tool and as accurate as engineering software, and it is free to start for a first event. The platform is drag-and-drop, browser-based, and requires no design degree. Multiple team members, including operations, fire liaison, ADA coordinator, and traffic lead, can work in the same live plan simultaneously, which prevents version-control chaos from emailed files. The auto-generated Bill of Quantities means procurement and permitting documents come directly from the map, with no re-keying.
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How to Reduce Risk on Your Next Fair
Four risk categories account for most permit rejections and last-minute rework at county fairs. Addressing each category early keeps your event on schedule and within budget.
Inaccurate measurements. Structures placed using non-scaled screenshots routinely fail fire-lane and setback checks on inspection. Measure remotely on a geo-accurate base map and validate dimensions before you commit to a layout. OnePlan’s area and perimeter calculator returns exact figures the moment you outline any space. The same principle applies to crowd capacity, since Bearfoot’s documented density calculations, mentioned in Step 4, prevent the common mistake of overestimating available space.
Version control. Emailed PDFs fragment into multiple versions across departments. A single live plan that every stakeholder accesses from one URL removes the risk of a fire marshal reviewing an outdated diagram. Include a revision date on every exported map.
Stakeholder misalignment. Fire, ADA, traffic, and police reviewers each look for different elements. A single, comprehensive plan that shows all required layers, including fire lanes, ADA routes, egress paths, and utility locations, reduces the number of back-and-forth revision cycles. The single-plan approach eliminates stakeholder misalignment. As Eagle Mountain City demonstrated earlier, one comprehensive layout serves every reviewer without the fragmentation of department-specific maps.
Reusable templates. County fairs often return to the same site year after year, which creates an opportunity to reduce risk through reusable templates. When you save an approved plan as a template in OnePlan, you preserve the fire-lane geometry, ADA routes, and setback dimensions that already passed review. This means next year’s design starts from a compliant baseline rather than a blank canvas, which eliminates the risk of inadvertently removing an element that was required for approval.
Success indicators for a well-executed permit map include first-submission approval with no revision requests, fire marshal sign-off on fire-lane dimensions before the event date, ADA reviewer confirmation of accessible route continuity, and a Bill of Quantities that matches the structures listed in the permit application.
Frequently Asked Questions
How far in advance should a county fair organizer submit a temporary structure permit application?
Most permitting authorities recommend submitting at least 6–8 weeks before the event date for standard temporary use permits. As noted earlier, large gatherings can require 8–12 weeks from complete application to final decision because multi-agency review, covering fire, health, police, public works, and building departments, runs sequentially or in parallel, and public-hearing calendars are fixed. Permit review for temporary structures such as tents and stages can take several weeks after a complete application is submitted, and that review period begins only once the application is complete. Always confirm the exact timeline with your local permitting authority, as requirements vary significantly by jurisdiction.
What file formats do permitting offices typically accept for site plan submissions?
Most permitting offices accept PDF as the standard submission format, with some jurisdictions specifying exact page sizes. High-resolution PNG exports are widely accepted for supplementary maps and stakeholder presentations. OnePlan exports plans as high-resolution PNG files, print-ready up to A0 size, with a separate legend. If your jurisdiction requires a specific page size or format, confirm this before exporting and include a graphic scale bar so the plan remains measurable if printed at a different size than intended.
What happens if the layout changes after the permit has been submitted?
Any material change to the site layout, such as moving a tent, adjusting a fire lane, or relocating a generator, typically requires a revised site plan to be resubmitted for review. Version control becomes critical at this stage. Keeping a single live plan in OnePlan means the updated layout is always current, and a new high-resolution export with an updated revision date can be produced immediately. Submitting a clearly labeled revised plan with a cover note identifying the changes speeds the re-review process. Avoid making undocumented changes between submission and inspection, because discrepancies between the approved plan and the actual site layout are a common cause of failed inspections.
Do all tents at a county fair require a separate permit?
Permit thresholds for tents vary by jurisdiction and adopted fire code. Salt Lake City, Utah, for example, requires a permit for tents open on all sides when they exceed 700 square feet, single or combined, and for tents with one or more sides when they exceed 400 square feet. The International Fire Code requires an operational permit for tents having an area in excess of 400 square feet. Some jurisdictions aggregate tent areas, so multiple smaller tents placed close together may collectively trigger a permit requirement even if no individual tent exceeds the threshold. Always verify the applicable threshold with your local fire code official before you finalize the site plan.
What flame-resistance documentation is typically required for tent permits?
Most jurisdictions require tent vendors to provide documentation confirming that tent fabric meets flame-resistance standards, commonly NFPA 701 or an equivalent approved flame-retardant treatment, with a certification label affixed to the structure. Salt Lake City requires the California State Fire Marshal’s flame-retardant certification seal to be visibly affixed to all temporary structures used for cooking or heating food. Some jurisdictions also require engineer documentation confirming that the tent anchoring system is adequate for the design wind speed applicable to the site. Collect this documentation from your tent supplier before the permit application is submitted because missing flame-resistance certification is a common reason for application rejection or delayed approval.
Conclusion: Build Compliant Maps Faster
A scaled, geo-accurate temporary structure permits map often makes the difference between a first-submission approval and weeks of revision cycles. This five-step workflow, which covers gathering site dimensions, choosing a geo-accurate base map, placing structures and safety elements to scale, running capacity checks, and exporting submission-ready maps and a Bill of Quantities, produces the diagram that fire marshals, ADA reviewers, and traffic departments expect, without CAD software or repeated site visits.
OnePlan has powered more than 200,000 events in 150 countries, from community fairs to the Olympics, and it is free to start for your first event. Teams like Eagle Mountain City, the North Texas Tribute Jam, and the City of Greater Dandenong have cut planning time significantly and accelerated approvals by replacing static screenshots with a single, live, to-scale plan that every stakeholder can access.