After 45 years of installing fences across St. Louis, we’ve seen almost every fence mistake a homeowner can make, and we’ve fixed most of them. Some are expensive. Some are heartbreaking. All of them are avoidable. Here are the five fence mistakes we encounter most often, why they happen, and what to do instead.
This isn’t a generic list of “fence regrets.” Every mistake below is one we see regularly in St. Louis specifically — because our climate, our soil, our HOA landscape, and our neighborhood layouts create conditions that lead to these problems more than in other parts of the country.
Mistake #1: Choosing the Wrong Material for Missouri Weather
This is the single most common fence mistake we see, and it’s the one with the longest-lasting consequences. A homeowner picks a material that looks great in the showroom or on a website, without considering how it will perform through St. Louis summers and winters.
Here’s what happens: untreated or poorly maintained wood rots faster than expected because Missouri’s humidity and freeze-thaw cycles ⬈ accelerate decay — especially at the post base, where our clay-heavy soil holds moisture against the wood. We’ve seen cedar fences in Kirkwood that look beautiful at 18 years because the homeowner stained on schedule, and pine fences in the same neighborhoods falling apart at 7 because they weren’t treated after installation.
The fix: match the material to your maintenance tolerance and our climate. If you’re willing to stain every 2–3 years, wood is a great choice. If you’d rather not think about your fence after it goes up, vinyl lasts 25–30 years with almost zero upkeep. For a detailed breakdown of how every material performs in our area, see our guide on which fence materials last longest in St. Louis.
Mistake #2: Not Checking HOA Rules Before Buying
This fence mistake hits homeowners in the wallet after the fence is already up. They pick a material, style, or height that violates their HOA’s architectural guidelines, and they find out when they receive a violation notice — sometimes after they’ve already paid thousands for installation.
St. Louis County has one of the highest concentrations of HOAs in Missouri. Many neighborhoods in Chesterfield, Wildwood, Des Peres, Town and Country, and parts of west county have specific rules about fence materials (some prohibit chain link entirely), approved colors (white, tan, and natural wood tones are the most commonly required), maximum heights (often 4 feet in front yards, 6 feet in back), and even which direction the “finished” side of the fence must face.
The fix: check your HOA covenants before you do anything else — before you shop, before you get quotes, before you fall in love with a design. Our guide on HOAs, property lines, and permits walks through exactly what to look for. When you work with Kirkwood Fence, we review your HOA requirements as part of the consultation and make sure the design we recommend is compliant from the start.
Mistake #3: Ignoring Property Lines
This fence mistake creates problems not just with your fence, but with your neighbors. A fence installed even a few inches onto a neighbor’s property can trigger disputes, required removal, and in the worst cases, legal action. It happens more often than you’d think.
The most common version we see: a homeowner assumes the old fence line or a landscape feature (like a row of bushes or a change in grass height) marks the property boundary. It often doesn’t. Property lines from the original survey can differ by feet — not inches — from what looks like the boundary at ground level.
In St. Louis County, you can request a copy of your plat from the county recorder’s office, but for fence installation, a fresh survey from a licensed surveyor is the safest approach. The St. Louis County Ordinance Guidebook ⬈ outlines the basics of property line requirements for residential improvements.
The fix: confirm your property lines before installation, not after. Kirkwood Fence reviews your property documents during the consultation and flags any areas where a survey may be needed. The cost of a survey is a fraction of the cost of moving a fence.
Mistake #4: Choosing Price Over Value
Budget matters — we understand that. But the fence mistake we see more than almost any other is a homeowner choosing the cheapest possible option and regretting it within a few years.
The problems show up fast in our climate: posts set too shallow in Missouri’s clay soil start leaning after the first winter. Thin-gauge hardware rusts through. Cheap wood that wasn’t properly treated warps and splits. And the labor shortcuts that made the installation cheap — skipping concrete footings, not calling 811 to mark utilities, not accounting for slope — create structural problems that cost more to fix than a quality installation would have cost upfront.
The National Association of Realtors’ Remodeling Impact Report ⬈ found that 92% of REALTORS recommend improving curb appeal before selling, and a well-built fence can recover 50–70% of its cost at resale. A fence that’s falling apart does the opposite — it signals neglect and lowers the perceived value of your home.
The fix: compare lifetime cost, not just upfront price. A vinyl fence costs more on day one but requires zero maintenance for decades. A well-built cedar fence with proper footings and quality hardware will outperform a bargain pine fence by years. Our guide to vinyl vs. wood fencing breaks down the real math. And if upfront cost is the constraint, we offer financing options that let you invest in quality without the full amount up front.
Mistake #5: DIY Installation on Difficult Terrain
We’re not against DIY projects. But this fence mistake specifically bites St. Louis homeowners because our terrain and soil conditions make fence installation harder than it looks in a YouTube tutorial.
Missouri’s clay soil is dense and holds water. Posts need to be set deeper than in sandier soils to get below the frost line and into stable ground. Yards across west and south county often have significant slope — a flat-looking yard can have 2 to 3 feet of grade change across a fence line, which requires racking or stepping the panels. And utility lines in older St. Louis neighborhoods are sometimes in unexpected locations.
The result of underestimating these conditions: leaning posts within the first year, uneven fence lines with visible gaps at the bottom, gates that don’t close properly because the posts have shifted, and no warranty to fall back on when things go wrong.
The fix: be honest about whether your yard’s conditions are DIY-friendly. A flat lot with sandy soil and a simple rectangular layout? DIY can work. A sloped yard with clay soil, mature trees near the fence line, and an HOA that requires a specific finished appearance? That’s where professional installation pays for itself. Our breakdown of DIY vs. professional fence installation covers the real costs and risks. And our guide to the wood fence installation process shows exactly what a professional installation looks like from start to finish, so you know what you’re comparing against.
The One Thing All These Fence Mistakes Have in Common
Every fence mistake on this list comes from the same root cause: making decisions without enough local information. National “how to choose a fence” articles don’t tell you about Missouri’s clay soil. Generic material comparisons don’t account for St. Louis freeze-thaw cycles. And no website can substitute for someone walking your actual yard and seeing the slope, the soil, the trees, and the neighbor’s sightlines.
That’s what our free design consultation is for. We’ll walk the property with you, talk through your priorities, review your HOA requirements, and make sure every decision is informed by the specific conditions of your yard — not generic advice.
For a complete decision framework, see our guide to choosing the right fence for your St. Louis home. If you’re specifically looking at privacy, our guide to privacy fence options for St. Louis homes covers materials, styles, and local regulations. And if your fence needs to contain pets, our guide to the best fences for dogs addresses jumping, digging, and gate security.
We serve homeowners across Kirkwood, Webster Groves, Chesterfield, Ladue, Ballwin, Des Peres, Town and Country, Manchester, Wildwood, Fenton, and surrounding communities.
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