Research by DoINeedAPermit Research Team · Updated May 2026
The Short Answer
Fences under 6 feet in rear or side yards are typically permit-exempt in Wildwood; front-yard fences, masonry fences over 4 feet, and all pool barriers require permits regardless of height.
Wildwood uses a location-based height exemption that differs from some neighboring Missouri municipalities. The City of Wildwood Building Department exempts non-masonry fences under 6 feet in rear and side yards — but the moment that fence is in a front yard (including corner lots), ANY height requires a permit. This is where Wildwood's code diverges from some St. Louis suburbs: a handful of nearby cities exempt front-yard fences under 4 feet, or apply a uniform 'anywhere' 6-foot rule. Wildwood is stricter on corner-lot sight-line enforcement because the city's zoning overlay addresses intersection visibility. Additionally, all pool barriers must be permitted and inspected, regardless of height or location — this applies citywide and is non-negotiable. Masonry, stone, or vinyl-over-concrete fences over 4 feet also require permits in Wildwood, even in rear yards, because they trigger footing-depth review (30-inch frost depth in this zone). Owner-builders can pull permits themselves for owner-occupied property, but HOA approval is entirely separate and must be obtained before any permit is filed — Wildwood does not waive or cross-check HOA restrictions.

What happens if you skip the permit (and you needed one)

Wildwood fence permits — the key details

Wildwood's exemption for rear and side-yard fences under 6 feet (wood, vinyl, or chain-link) is straightforward, but the location rule is the critical dividing line. Any fence in a front yard — including the front portions of a corner lot — requires a permit. The City of Wildwood Building Department bases this on sight-line safety and aesthetic control in the public-facing streetscape. Masonry, stone, or decorative block fences jump to a 4-foot threshold for exemption, meaning a 5-foot masonry fence in your backyard still needs a permit and footing inspection. The code does not exempt replacements of existing fences unless you are reinstalling the identical structure in the exact same location using the same footprint; if you move a fence 2 feet inward or raise it 6 inches, you've changed scope and must permit. The 30-inch frost depth in Wildwood's zone (USDA Zone 4A, loess-soil region with karst features to the south) means footing inspection for masonry is non-negotiable — shallow footings heave and fail, creating liability for the city.

Pool barriers are always permitted in Wildwood, regardless of height or location. IRC AG105 (the Model Energy Code pool-barrier section, adopted by Missouri) requires self-closing, self-latching gates at least 42 inches high with a 4-inch or less opening and immediate audible warning devices. The city's plan reviewer will scrutinize pool-fence applications for gate-closing mechanism photos, latch specifications, and proof that the barrier encloses the pool on all four sides or is part of a licensed residential pool alarm system. If you are installing a pool fence, submit a site plan showing the pool perimeter, gate location, swing clearance (the gate must not swing into the pool area), and material specs. Many homeowners skip this step and request a verbal 'okay' from the building department — this is a mistake. Pool-barrier violations carry potential liability exposure far beyond the permit process itself; your homeowners insurance will scrutinize compliance.

Front-yard and corner-lot fences in Wildwood trigger setback and sight-triangle rules tied to the city's zoning ordinance. On a corner lot, a fence cannot block driver sightlines at the intersection — typically, fences must be set back at least 25 feet from the street corner property line, or kept under 3 feet high if closer. The City of Wildwood Building Department reviews corner-lot fence applications against a sight-triangle diagram; if your lot is a corner and you want a privacy fence on the front-facing side, expect a rejection unless you're willing to set it back or lower it significantly. This is where many Wildwood homeowners discover their fence plan is infeasible without redesign. Front-yard fences also require setback from the street right-of-way; typically 10 feet minimum, but some lots have variable setbacks recorded on the plat. Always pull your plat or request the city's site-plan requirements before you design or order materials.

Wildwood permits for fences typically cost $50–$200, depending on linear footage and material. The city charges a flat permit fee ($75–$100) for most residential fences under 100 linear feet, with additional plan-review fees if your application requires a site survey or structural engineering review (common for masonry over 4 feet or corner-lot sight-line disputes). Some homeowners assume they can walk a sketch to the building department counter and leave with a permit; this works for simple rear-yard under-6-foot cases, but most applications require a site plan showing property lines, proposed fence location, dimensions, and material callouts. The city's online permit portal (accessible through the Wildwood city website) allows you to upload plans, but the fastest route is to call the City of Wildwood Building Department first (phone available on the city website), describe your project, and ask whether your fence qualifies for over-the-counter approval or requires plan review.

Owner-builders can pull their own permits in Wildwood for owner-occupied single-family homes, but HOA approval must be obtained separately and BEFORE you submit a permit application. Many Wildwood properties, especially in newer subdivisions, are subject to deed restrictions or HOA covenants. The city does not enforce HOA rules, but the HOA will enforce its own restrictions — and if your fence violates the recorded covenants, the HOA can levy fines or force removal even if the city's building department approves the permit. Always contact your HOA or check the recorded deed restrictions on your property before moving forward. If your property is not in an HOA-controlled subdivision, you are free to pull the permit directly. Inspections for non-masonry fences are typically final-only (no footing or mid-construction check); for masonry fences over 4 feet, expect a footing inspection before backfill and a final inspection after completion. Wildwood's inspection timeline is usually 3–5 business days for scheduling, with most results issued same-day or next-day.

Three Wildwood fence (wood/vinyl/metal/chain-link) scenarios

Scenario A
6-foot wood privacy fence, rear yard, non-corner lot, Wildwood subdivision with HOA
You own a 0.35-acre rear-loaded lot in a newer Wildwood subdivision. The lot has HOA restrictions, and you want to install a 6-foot pressure-treated pine privacy fence (6x6 posts, 1x6 boards, concrete footings) along the rear property line to screen your neighbor's view and create a play area. The fence is 125 linear feet. Under Wildwood code, a 6-foot fence in a rear yard is exempt from permitting — the exemption applies because it is not in a front yard and does not exceed the 6-foot limit. However, you MUST obtain written approval from your HOA before you order a single post. Check your deed restrictions or contact the HOA management company (usually identified in your closing documents or property tax statement). Most Wildwood HOAs allow rear-yard fences up to 6 feet, but some restrict materials (no chain-link), colors (stain or natural, not painted), or require architectural review. If the HOA approves, you do NOT need a city permit — no application, no fee, no inspection. You can hire a contractor or build it yourself. The contractor does not need a city business license for a no-permit fence, but verify this before hiring. Your footings should be 30 inches deep (Wildwood's frost depth) to prevent heave. Budget $3,500–$6,000 for professional installation; $1,500–$3,000 if you DIY. Timeline: HOA review 5–10 business days, construction 3–5 days.
No city permit required (rear yard, ≤6 ft) | HOA approval REQUIRED before work begins | 30-inch concrete footings (frost depth) | Pressure-treated pine or cedar heartwood recommended | Total project cost $3,500–$6,000 | No city permit fees
Scenario B
4-foot decorative vinyl fence, front yard corner lot, no HOA, sight-line dispute
Your corner lot in an older Wildwood neighborhood (no HOA, no deed restrictions) has a busy street intersection at the southeast corner. You want a 4-foot white vinyl privacy fence along the front-facing (south) property line to screen your yard and front porch. A 4-foot vinyl fence would normally be exempt in a rear yard, but because it is in the FRONT yard, the City of Wildwood Building Department requires a permit regardless of height. Additionally, because your lot is a corner lot, the city will apply a sight-triangle analysis to ensure the fence does not obstruct drivers' sightlines at the intersection. The sight-triangle typically extends 25 feet back from the corner property line and requires fences to be under 3 feet high within that triangle (or set back further from the street). Your fence, as proposed, will likely violate the sight-triangle rule and get rejected. Options: (1) reduce the fence height to 3 feet within 25 feet of the corner, then step up to 4 feet further from the intersection; (2) set the fence back from the front property line (losing privacy in the closest area); (3) redesign as an open picket fence that does not obstruct sightlines. You'll need to submit a site plan showing the lot corners, intersection, proposed fence line, height profile, and material specs. The City of Wildwood Building Department will require a surveyed plat or a detailed hand-drawn site plan (costs $200–$500 if you hire a surveyor; free if you sketch it yourself and the city accepts it). Permit fee is $75–$125. Plan review takes 5–10 business days. If rejected, you revise and resubmit (another 5–10 days). Expect a final inspection once erected.
Front-yard fence requires permit (any height) | Corner-lot sight-line review applies | Sight-triangle likely restricts height to ≤3 ft within 25 ft of corner | Site plan required ($0–$500 for survey) | City permit fee $75–$125 | Revised design likely needed before approval | Total project cost $2,000–$4,000 (fence + survey/design)
Scenario C
6-foot masonry/vinyl-clad fence, rear yard, pool barrier requirement (12x12-foot above-ground pool)
You have a rear-yard above-ground swimming pool (12 feet by 12 feet, 4 feet deep) in an older Wildwood neighborhood. Your insurance company requires a pool barrier, and you want to enclose the pool with a 6-foot vinyl-clad masonry fence (concrete block with vinyl facing). Even though the fence is in the rear yard and you'd normally be under 6 feet, this is a POOL BARRIER, so a permit is required by IRC AG105 and Wildwood city code regardless of height. Additionally, because the fence is masonry (4-foot threshold for masonry in Wildwood), the 6-foot height triggers footing-depth review. You must submit a site plan showing the pool location, the proposed barrier enclosure on all four sides, the gate location (42 inches high minimum), gate-closing mechanism spec (automatic close, self-latch, max 15-second close time), and latch height (48 inches or higher for adult-proof). A 12x12 pool with a 6-foot fence on all sides is roughly 60 linear feet. The city will require a footing-detail section drawing showing 30-inch-deep concrete footings (Wildwood's frost depth), post spacing (typically 4–6 feet on center), and block-height callouts. If you cannot draw this yourself, hire a fence contractor who provides shop drawings; cost $150–$300. You'll submit the permit application with site plan, footing details, gate spec, and pool-barrier certification. Permit fee is $100–$150. Plan review is 5–10 business days. Footing inspection is required before backfill (you call the city for inspection once post holes are dug and posts are set). Final inspection after fence is complete and gate is operational. Total timeline: 3–4 weeks from permit issuance to final. Cost: $5,000–$9,000 for masonry fence (contractor); $100–$150 for permit.
Pool barrier requires permit (IRC AG105) | Masonry fence >4 ft triggers footing review | 30-inch concrete footings required | Footing inspection + final inspection required | Gate spec must be self-closing, self-latching, 42 in. minimum height | Site plan and footing details required | City permit fee $100–$150 | Total project cost $5,000–$9,000

Every project is different.

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Wildwood's frost-depth and soil-specific fence requirements

Wildwood sits in USDA Zone 4A with a 30-inch frost depth — one of the deeper frost lines in the Missouri region. This matters for any fence with below-ground structural elements (posts, masonry footings, metal fence footings). Frost heave occurs when water in the soil freezes, expands, and lifts the post or footing upward; when it thaws, the structure settles unevenly, leading to leaning, cracking, or gate misalignment. The City of Wildwood Building Department requires footing inspections for masonry fences over 4 feet specifically because masonry failures from shallow footings create liability — a collapsed fence can injure neighbors or damage property. Wood and vinyl fences under 6 feet in rear/side yards (permit-exempt) are not subject to footing inspection, but this does not mean you can ignore frost depth. Smart homeowners install posts 30 inches deep even for exempt fences to prevent sagging gates and post-drift within 2–3 years.

Wildwood's soil is primarily loess (a silt-rich deposit) in the northern and central areas, with karst features (caves, sinkholes, subsurface voids) to the south. Loess is stable when dry but can settle and become unstable when saturated. If your lot is south of the main commercial corridor (toward Highway 100 or further south), a soil-boring test may be required by the city for masonry fences or pool barriers. The city's plan reviewer may request a soil-boring report if your site-plan application raises red flags (prior sinkhole activity in the neighborhood, poor drainage, etc.). Cost for a single boring is $300–$600; this is rare but not unheard of. Always mention poor drainage or previous ground settling in your permit application — transparency here prevents costly rejections after work has started.

For chain-link and vinyl fences, frost depth is less critical because these materials are lighter and more forgiving of minor settling. A 6-foot chain-link fence in a rear yard can be installed with 24-inch deep footings and will tolerate 1–2 inches of heave without significant aesthetic or functional degradation. However, Wildwood inspectors still prefer 30-inch depth on all residential fences as a best practice. If you're hiring a contractor, confirm they understand Wildwood's 30-inch standard; some contractors from warmer regions or neighboring states use shallower depths and will resist deeper digging if not specified in the contract.

HOA and deed-restriction enforcement in Wildwood subdivisions

Wildwood has undergone rapid residential growth since the 1990s, and most newer subdivisions (built after 2000) have HOA restrictions recorded in the St. Louis County Recorder's Office. When you purchase a property, the deed or title commitment will note these restrictions, and the closing attorney should provide you with a copy. However, many homeowners file these documents away and forget to check them before starting a home project. The City of Wildwood Building Department does NOT cross-reference HOA covenants; the city issues permits based on city code alone. This means you can obtain a city permit for a fence that violates your HOA, and the city will inspect and approve it — but the HOA can then fine you or force removal. Always pull your deed or contact your HOA management company (often listed in property-tax notices or on the county assessor's website) and request a copy of the restrictions. Look for language like 'no fences except white vinyl, maximum 4 feet, rear yard only' or 'HOA approval required for all exterior modifications.' Some HOAs require architectural-review approval before any fence work; this process can take 2–4 weeks.

Wildwood's HOAs vary widely in enforcement. Some are active and vigilant; others are dormant and rarely enforce. Do not assume a restriction is unenforceable because you've never seen it enforced. A new HOA board, a property sale in the neighborhood that triggers new scrutiny, or a neighbor complaint can activate enforcement overnight. The safest approach is to obtain written HOA approval for any fence project, even in a rear yard where city permits aren't required. Cost of HOA approval is usually zero (it's an administrative review), but timeline is 1–2 weeks. If the HOA rejects your design, you can either redesign and reapply, or — in rare cases — appeal to the HOA board or seek a variance if the restriction is ambiguous. Litigation over HOA enforcement is expensive ($5,000–$20,000+), so it's far better to get written approval upfront.

Older Wildwood neighborhoods (pre-1990) often have no formal HOA but may have deed restrictions from the original subdivision platting — these are recorded restrictions that bind all future owners. These restrictions can be difficult to locate; you may need to hire a title company or attorney to search the chain of title. Some old restrictions are outdated (e.g., 'no fences permitted anywhere on the lot'), but they are still technically enforceable by a neighbor who cares. If you discover a restrictive covenant against fences on your property, you have two options: (1) apply for a variance or modification through the city's planning department (rare; costs $500–$2,000 and is uncertain); (2) obtain a neighbor sign-off (informal, but provides legal protection if later challenged). Again, clarity upfront saves heartache later.

City of Wildwood Building Department
City of Wildwood, Wildwood, MO (contact city hall for building department address)
Phone: Contact Wildwood city website or call city hall for building permit line | https://www.ci.wildwood.mo.us/ (check for online permit portal or application guidance)
Monday–Friday, 8 AM–5 PM (verify with city; some departments close noon–1 PM)

Common questions

Do I need a permit to replace my existing fence in Wildwood?

If you are replacing a fence with the exact same material, height, and location, you may qualify for an exemption — but you must confirm this with the City of Wildwood Building Department first. Call or visit the building department and describe your existing fence and your replacement plan. If the new fence differs in height, location, or material from the original, it is treated as new construction and follows all permit rules. Masonry replacement fences over 4 feet always require a permit. Document your original fence with photos before removal; the city may request them.

What is the difference between a city permit and HOA approval in Wildwood?

The city permit ensures your fence complies with municipal code (height, setback, sight-line rules). HOA approval ensures it complies with your subdivision's deed restrictions. Both are separate processes. You need a city permit only if required by city code; you need HOA approval only if your property is subject to HOA restrictions. Many Wildwood properties require BOTH. Always check your deed for HOA language before you apply for a city permit.

My corner-lot fence got rejected for violating the sight-triangle. Can I appeal?

Yes, you can appeal or request a variance through the City of Wildwood Planning and Zoning Department. However, variances for sight-line violations are rarely granted because they reflect public-safety concerns (intersection visibility). Instead, work with the building department to redesign your fence — reduce height within the sight-triangle, set it back further from the corner, or switch to an open picket design that does not obstruct views. A revised site plan costs little to resubmit and is more likely to succeed than a variance.

Can I build a fence myself in Wildwood, or do I need to hire a contractor?

Wildwood allows owner-builders to pull permits for owner-occupied single-family homes. You do not need a contractor license to build a fence on your own property. However, if your fence requires footing inspection (masonry over 4 feet or pool barrier), you must schedule inspections with the city — the building department will provide inspection phone numbers and timelines in the permit. If you hire a contractor, they can pull the permit or you can pull it yourself; confirm with your contractor either way.

What happens if I install a fence without a permit and the city finds out?

The City of Wildwood Building Department can issue a stop-work order and fine you $100–$300. You will be ordered to either remove the fence or pull a retroactive permit (usually at double the standard fee). If you choose to permit it retroactively, footing inspections may be difficult to complete after the fence is built, and the city may require excavation or structural engineering to verify compliance. Your best option is to halt work, contact the building department, explain the situation, and ask for guidance. Many building departments will work with you on a retroactive permit if you are cooperative.

Is a chain-link fence exempt from permits in Wildwood if it is under 6 feet in a rear yard?

Yes, chain-link fences under 6 feet in rear and side yards are typically exempt from permitting in Wildwood, just like wood and vinyl. However, if the chain-link fence is in a front yard, it requires a permit. Also, confirm with your HOA if your property is subject to restrictions — many Wildwood HOAs do not allow chain-link and require wood or vinyl, regardless of city code.

My pool barrier fence is 6 feet tall. Do I need a permit, and what gate specs does Wildwood require?

Yes, all pool barriers require permits in Wildwood under IRC AG105, regardless of height. The gate must be at least 42 inches high, self-closing, self-latching, with a maximum latch height of 48 inches (adult-proof). The gate must close and latch within 15 seconds, and there must be no more than a 4-inch gap between the gate and fence posts. Submit a site plan showing the pool perimeter and gate location, along with gate-mechanism specifications (photos and product spec sheets are helpful). Plan for footing and final inspections.

How long does the Wildwood fence permit process typically take?

For permit-exempt fences (under 6 feet, rear/side yard, non-masonry), no timeline applies — no permit needed. For permitted fences, the city typically takes 5–10 business days for plan review. If your application is incomplete (missing site plan, setback details, gate specs), the review clock resets. Footing and final inspections can usually be scheduled within 3–5 business days. Total timeline from permit issuance to final inspection: 2–4 weeks, assuming no revisions.

What if my fence is partly in an easement? Does Wildwood require utility company permission?

If your fence crosses a recorded easement (utility, drainage, or maintenance), the city will flag this during plan review and require written permission from the easement holder (utility company, drainage district, etc.). This is non-negotiable. Contact the utility companies that serve your property (electric, gas, water, sewer, cable) and ask if an easement is recorded on your deed. If yes, request a letter of permission for fence installation. This can take 2–4 weeks and sometimes requires a site walk. Never assume the easement is inactive; utilities may enforce access rights decades later.

I live in a historic district in Wildwood. Does that affect fence permits?

Wildwood has historic district overlays in some older neighborhoods. If your property is in a historic district, the city's Design Guidelines or Historic Preservation Commission may have additional requirements for fence materials, colors, styles, or heights. Check your property record or contact the City of Wildwood Planning Department to confirm if you're in a historic overlay. Historic-district fences often require architectural review, adding 2–4 weeks to the timeline and potentially costing $100–$300 extra. Design standards are usually available on the city website or from the planning department.

Disclaimer: This guide is based on research conducted in May 2026 using publicly available sources. Always verify current fence (wood/vinyl/metal/chain-link) permit requirements with the City of Wildwood Building Department before starting your project.