What Makes a Site Plan Permit Ready? 9 Things Reviewers Look For Before Approval
You submitted the application last month.
The contractor is scheduled. Materials are on order. The concrete was supposed to be poured last week.
Instead, you’re staring at a correction letter. Three pages. Numbered comments. Redlines on drawings you barely understand. A resubmittal window that just pushed your project back five weeks.
This wasn’t a design problem.
It was a documentation gap. One that we see repeatedly across permit submissions from Phoenix to Charlotte.
Here’s what permit reviewers actually flag — not what the code requires in theory, but what gets marked “incomplete” in practice.
The Myth: "I Just Need a Simple Drawing"
Most homeowners picture a site plan as a sketch: property lines, a house outline, maybe a deck drawn in.
That’s not how permit review works.
Plan reviewers are not architects. They don’t interpret intent. They work from checklists. If something is missing from the drawing — a dimension, a label, a note — they do not call you to clarify. They stamp it “incomplete” and move to the next application.
The difference between a rejected plan and an approved plan is not artistic quality.
It’s completeness.
Every required element present. Every dimension shown. Every note exactly where the reviewer expects it.
You can spend a weekend researching what “complete” means across different city checklists. Or you can upload your address and let us handle it.
What Permit Reviewers Actually Check (9 Items That Appear on Nearly Every Correction Letter)
These nine items appear repeatedly in correction letters we’ve revised across the Sun Belt. A missing item isn’t a rejection of your project. It’s a rejection of your paperwork.
1. Property Boundaries — The Foundation of the Entire Review
The reviewer starts here. If the property boundary doesn’t match the recorded plat, the application stops before anything else gets evaluated.
What gets flagged:
- “Missing property line dimensions.”
- “Lot number does not match county records.”
- “North arrow not shown.”
- “Scale not indicated.”
Dimensions must be in feet and decimal feet. The north arrow must be present and correct. The parcel number must match.
A mismatch between the application and the drawing causes an immediate delay. No exceptions.
We pull parcel data directly from county records on every plan we produce. This is exactly why we include it — because a single mismatch triggers rejection before the reviewer even reads the rest.
2. Setbacks — The Most Common Redline We See
Setbacks are the required distances between structures and property lines. They are not flexible. They are not open to interpretation.
And they are not measured from the foundation wall.
They are measured from the furthest projection — roof eaves, gutters, chimneys, bay windows.
Most homeowners who draw their own plans measure from the foundation. That’s incorrect in nearly every jurisdiction. In Austin, that mistake created a 2-foot error on an ADU submission. The plan went back twice.
What gets flagged:
- “Setback dimension missing – side property line.”
- “Setback measured from foundation, not eave.”
- “Bay window encroaches into side setback.”
A single incorrect setback can trigger a full redesign. Moving a structure 2 feet inward may affect grading, utility connections, and structural calculations.
The reviewer can only approve what they can verify. If the setbacks aren’t labeled correctly, they can’t verify.
3. Easements — The Invisible Boundary That Stops Projects Cold
Easements are legal rights that allow utility companies, drainage agencies, or neighboring properties to use a portion of your land. They are recorded instruments. They don’t disappear because they’re not on your plan.
If you build over a recorded easement, the utility company can force removal at your expense. Not a correction. A demolition order.
What gets flagged:
- “Utility easement shown without recorded instrument number.”
- “Structure encroaches into drainage easement.”
- “Easement book/page reference missing.”
Reviewers require the recorded book and page number for every easement shown. Labeling a line “utility easement” without the instrument number is not sufficient.
We’ve revised plans rejected for exactly this issue. We pull recorded easements from county records and include instrument references on every plan we produce.
4. Driveway and Access — What Fire and Engineering Reviewers Check
Driveways are not just for cars. They are fire access routes.
Engineering reviewers check width, slope, turning radius, and how the driveway interacts with drainage swales or ditches. Fire reviewers check whether emergency vehicles can actually reach the structure.
What gets flagged:
- “Driveway width not labeled.”
- “Turning radius insufficient for fire truck access.”
- “Driveway approach conflicts with drainage easement.”
A rejected driveway means a rejected permit. And fixing it after the fact often means moving walls or re-pouring concrete.
Most homeowners discover this after a correction letter arrives.
5. Utilities — The Underground Surprise
Utility lines — water, sewer, gas, electric — must be shown on the site plan. Not noted as “connected.” The reviewer needs to see where the connection point is, and whether any proposed structure is in conflict with it.
What gets flagged:
- “Utility connection point not shown.”
- “Gas line location unclear.”
- “Water meter access blocked by proposed structure.”
One of the most common reviewer comments we see on ADU submissions: “Show the location of utility lines to the proposed ADU.”
Building over a gas line isn’t a correction. It’s a stop-work order. Reviewers flag ambiguous utility layouts specifically to prevent that outcome.
6. Flood Information — Required Even Outside Flood Zones
Many homeowners believe that if their property isn’t in a flood zone, flood information doesn’t belong on their site plan.
Wrong.
Even properties in Zone X — the lowest-risk FEMA designation — require a note referencing the FEMA panel number. Without it, the reviewer cannot confirm you checked. It becomes an automatic “incomplete” stamp.
What gets flagged:
- “Flood zone reference missing. FEMA panel number required.”
- “Base Flood Elevation not shown.”
We’ve seen this exact comment on Charlotte pool addition submissions, Phoenix garage plans, and Austin ADU applications. The property was in Zone X every time. The note was still required.
We include the FEMA panel number and flood zone designation on every plan. No exceptions.
7. Building Footprints — Existing vs. Proposed Must Be Unmistakable
Reviewers need to see what exists today and what you’re building. If they cannot immediately distinguish between the two, they cannot approve the plan.
Ambiguity triggers rejection. Reviewers do not guess.
What gets flagged:
- “Cannot determine which structure is existing vs. proposed.”
- “Building footprint does not match site plan dimensions.”
Existing and proposed structures must be clearly differentiated — different line types, hatching, or explicit labels. This is a basic requirement that DIY drawings routinely miss.
8. Lot Coverage and Impervious Surface — The Math Reviewers Run
Most residential zoning districts cap the percentage of a lot that can be covered by buildings, driveways, patios, and other non-absorbent surfaces — typically 40–60%.
If you don’t show the calculation, the reviewer can’t confirm compliance. If you show it incorrectly, they’ll reject it.
What gets flagged:
- “Lot coverage calculation missing or does not match zoning district limit.”
- “Impervious area exceeds maximum allowed.”
Exceeding the limit requires a variance. Variances take months and are not guaranteed. The time to discover this is before submission, not after.
9. Grading and Drainage — Where Water Goes Is a Reviewer's Responsibility
Water does not respect property lines. Stormwater that runs off your property onto a neighbor’s is a liability — and permit reviewers know it. They reject ambiguous drainage plans specifically to prevent downstream disputes and flooding claims.
What gets flagged:
- “Grading and drainage information incomplete – flow arrows missing.”
- “Drainage not designed — just shown.”
- “How water runoff will go not shown.”
On a Denver submission we revised, the reviewer’s exact comment was: “How water runoff will go not shown.” The plan showed grade contours. It didn’t show where the water went. That distinction cost 3 weeks.
Flow arrows. Stormwater management notes. Existing and proposed grades on sloped lots. These are not optional.
Real Permit Corrections. Real Delays. Real Costs.
These are actual reviewer comments from submissions we’ve worked with. Not hypotheticals.
Phoenix — Detached Garage
“Utility easement shown without recorded instrument number.”
The plan showed the easement. It didn’t include the book and page reference from county records. Phoenix requires the instrument number.
Delay: 3 weeks.
Austin — ADU
“Setback dimension missing – side property line. Measured from foundation, not eave.”
The homeowner measured from the foundation. Austin measures from the eave. Two-foot error. Two resubmissions.
Delay: 5 weeks.
Charlotte — Pool Addition
“Flood zone reference missing. FEMA panel number required.”
Zone X property. Low risk. Still required the panel number. Missing it was an automatic incomplete.
Delay: 4 weeks.
“ADU requires its own address. The plan set must reflect the assigned address.”
The ADU didn’t have a separate address on the plan. Clark County assigns them separately from the primary structure.
Delay: 2 weeks.
Denver — Grading Plan
“How water runoff will go not shown.”
No flow arrows. No drainage narrative. Grade contours were present. Direction of flow was not.
Delay: 3 weeks.
Each of these corrections was simple to fix. Each one cost weeks. And none of them would have appeared if the plan had included them from the start.
What a Permit Delay Actually Costs You
The correction letter isn’t the expensive part.
Here’s what happens after the stamp:
Resubmission queue. Your plan goes to the back of the line. In most cities, that’s 4–6 weeks added to your timeline — immediately.
Contractor availability. Your contractor doesn’t wait. They take another job. When you’re finally approved, they may not be available for months.
Carrying costs. Construction loan interest, property taxes, and insurance don’t pause while you’re in revision cycles.
Inspection windows. Seasonal construction windows close. Missing a start date in Phoenix or Denver can push your completion by an entire season.
Permit expiration. Some permits expire if construction doesn’t begin within a set timeframe. A drawn-out revision cycle can force a full reapplication.
Cascading design changes. A setback correction often triggers grading revisions. A grading revision may require updated engineering. Hourly rates apply.
The hidden cost of a rejected plan is rarely the permit fee.
It’s the weeks. The rescheduling fees. The missed window. The contractor who isn’t available anymore.
What "Permit Ready" Actually Means
“Permit ready” is not a marketing phrase. It is a technical standard.
A permit-ready site plan answers the reviewer’s questions before they’re asked.
Every required element present. Every dimension shown. Every note exactly where the reviewer expects it.
The difference between a rejected plan and an approved plan is not design quality. It is documentation completeness.
We see this across hundreds of submissions. The projects that sail through review aren’t the most elegantly designed. They’re the most completely documented.
Why Homeowners Order From SitePlans.us Instead of Drawing Their Own
You have three options.
Draw it yourself. Risk rejection. Risk five weeks of delay. Risk missing your contractor’s schedule. Spend hours learning city-specific requirements that reviewers already know by memory.
Hire a local drafter. Wait 2–6 weeks for a quote. Pay hourly rates. Hope they’ve pulled the specific checklist for your city and your permit type.
Order from SitePlans.us. Upload your address. We pull the parcel data, verify setbacks, locate recorded easements, add the required FEMA notes, calculate lot coverage, show drainage flow — and deliver a PDF ready to attach to your permit application.
24-hour turnaround. Fixed pricing starting at $89. Free revisions if the city asks for changes.
We already know what gets flagged. We build around it.
Frequently Asked Questions
How fast can I get a site plan? Most residential site plans are delivered within 24 hours. Complex projects — grading exhibits, subdivisions, commercial — may take longer. We’ll quote you upfront.
What if the city requests revisions? We revise for free. Send us the correction letter. We update the plan at no additional charge.
Do I need a survey before ordering? Not for most projects. We work from recorded plats, deeds, and county GIS data. If your property has a known boundary dispute, we’ll let you know if a survey is needed.
Can you prepare plans for pools, ADUs, garages, sheds, and additions? Yes. We’ve produced hundreds of residential site plans across dozens of cities and permit types.
Do your plans include easements, flood notes, and drainage? Yes. Every plan includes recorded easements with instrument references, FEMA flood panel numbers, and drainage notes where applicable.
Will the city accept your plan? We build every plan to the submittal checklist of the specific city. If a reviewer requests an additional note, we add it for free.
Stop Researching. Start Submitting.
You don’t need to become a zoning expert.
You don’t need to learn Phoenix’s eave projection rules, Austin’s watershed protection overlay, or Denver’s drainage manual notation requirements.
You need a plan that passes review the first time.
Upload your address. We pull the parcel data, verify setbacks, identify easements, add required notes, and deliver a permit-ready PDF within 24 hours. Fixed pricing. Free revisions.
Based on public municipal submittal checklists and permit correction letter patterns reviewed across the United States. City requirements change — we track updates so your plan doesn’t get caught by a rule that shifted last quarter.
Official Authority References:
- “What makes a site plan permit ready?”
Answer: A permit-ready site plan includes all elements on the reviewer’s checklist — property boundaries, setbacks measured from eaves, recorded easement references, FEMA flood panel numbers, utility connection points, building footprints with existing/proposed distinction, lot coverage calculations, and drainage flow information. - “Why do site plans get rejected?”
Answer: Most rejections are documentation gaps, not design flaws. Missing setback dimensions, unlabeled easements, absent flood notes, and unclear drainage are the most common reasons. - “What do permit reviewers check?”
Answer: Reviewers work from checklists. They check property boundaries against the recorded plat, setback measurements from the correct projection point, easement instrument numbers, driveway access dimensions, utility connection locations, flood zone references, building footprint clarity, lot coverage calculations, and stormwater drainage direction.