Gate Installation & Repair in St. Louis, MO

A well-hung gate is the difference between a fence that works and one that doesn't. Whether your driveway gate sags after a hard winter, your privacy gate won't latch, or you need a new entrance built from scratch, gate installation and repair in St. Louis requires square framing, proper hardware, and hinges that hold up to ground movement and weather. St. Louis homeowners in neighborhoods from Kirkwood to Florissant rely on gates to secure driveways, separate yards, and control access. We build and repair wood, vinyl, metal, and automatic gates that function reliably season after season, with the same crew handling your job from start to finish.

Why Gate Installation and Repair Matters in St. Louis Homes

A gate is load-bearing infrastructure. The hinges carry the full weight of the door, the frame must be perfectly square or the gate will bind and sag, and the posts must be set deep and solid. Ground movement, moisture at the post base, and hardware corrosion are the primary failure modes. A sagging gate is not cosmetic, it is a sign that the frame is racking or the hinges are wearing. Fixing it early costs less than replacing the entire gate after the stringer rails have warped beyond adjustment.

We diagnose whether a gate can be repaired with new hinges, anti-sag bracing, and hardware adjustment, or whether the frame itself needs replacement.
We set posts in concrete below the frost line and hang gates on adjustable hinges that compensate for ground settling.
We build gates square and plumb so the gap remains consistent and the latch engages cleanly after months of use.
We work with self-closing and self-latching hardware for privacy and security gates, and linear operators for automatic driveway gates.

A gate that works is a gate that lasts, and a gate that lasts protects the value of your fence and your property.

Key info: St. Louis homeowners often find that a gate sagging within two to three years is caused by posts set in soil without concrete, or by hinges that are not rated for the weight and swing cycle. We always set posts in concrete and specify hinges rated for the gate size and material. Check your local building department for setback and height rules before installation, as they vary by city and county across the Greater St. Louis area.

For more on the full range of fence repair work we perform, see our fence repair service page.

How We Install and Repair Gates in St. Louis: Our Process

Gate work begins with a clear understanding of the opening, the ground, and what you want the gate to do. We measure the opening, confirm the post locations and depth, and design the frame to be square and the hinges to be level. For repairs, we inspect the frame for twist and warp, test the hinges and latching hardware, and recommend whether adjustment, reinforcement, or replacement is the right move. For new gates, we build to your material choice, wood, vinyl, or metal, and hang the gate on hardware that holds.

We locate underground utilities using Missouri 811 before digging any post holes.
We set posts in concrete at a depth that meets local code and resists ground movement.
We build the frame with rails and stiles sized for the opening and material, ensuring square corners and straight edges.
We hang the gate on adjustable hinges, set the gap, and install latching hardware that engages smoothly.
We test the gate through a full swing cycle and make final adjustments to hinge height and latch alignment.

The result is a gate that opens and closes freely, latches securely, and maintains its fit as the ground and weather change.

Local example: A homeowner in Chesterfield had a wood privacy gate that sagged at the top corner after settling. We reinforced the frame with anti-sag bracing, replaced the hinges with adjustable hardware, and reset the latch. The gate now operates smoothly and the gap is consistent. Repair cost was a fraction of replacement, and the gate is good for years to come.

If you are considering a new fence and need an entrance gate, see our wood and privacy fence installation service for details on material and design options.

Gate Installation and Repair Methods

Approach	Description	Best for
Hinge and Hardware Repair	Replace worn or corroded hinges, adjust latch engagement, tighten bolts and fasteners.	Gates that operate but sag or bind slightly, or hardware showing surface rust and wear.
Frame Reinforcement and Anti-Sag Bracing	Add diagonal bracing or tension cables to prevent racking and maintain square geometry under load.	Gates with minor frame twist, or large gates where deflection is visible but the frame is still sound.
Post Replacement and Reset	Remove and reset posts in concrete, or replace rotted posts at the ground line with new pressure-treated or composite material.	Posts showing rot, severe tilt, or settling that causes binding and misalignment at the hinge and latch.
New Gate Frame and Installation	Build a new frame from scratch in wood, vinyl, or metal, set new posts, and hang on heavy-duty hinges and latching hardware.	Frames that are warped beyond repair, or when a new gate is desired to match a new fence or driveway entrance.
Automatic Gate Operator Installation	Install linear or cantilever gate operators, safety loops, and remote or card-reader access control.	Driveway gates, commercial entrances, and homeowners seeking hands-free or remote-controlled access.

Gate Installation and Repair Cost in St. Louis: What to Expect

Gate repair and installation pricing depends on the size of the opening, the material, the condition of existing posts and hardware, and whether you need a new frame or just adjustment and hardware replacement. A simple hinge and latch repair on an existing gate starts at around $495 and includes diagnosis, hardware replacement, and functional testing. A new wood or vinyl gate built and hung on a sound post structure typically runs higher and depends on width and height. Automatic gate operators add significantly to the cost but provide convenience and security that many homeowners find worth the investment. Ground conditions, access to the opening, and the need for post replacement all affect the final price.

The best way to understand your cost is to request a free estimate. We will visit your property, assess the opening and the condition of existing posts and hardware, discuss your goals, and provide a clear quote. Two or three estimates from different contractors will give you a sense of market pricing and let you compare the scope and confidence each crew brings to the job. Call (314) 668-1539 for a free, no-obligation estimate, or visit our pricing page for general cost guidance across our full range of services.

Gate Installation and Repair Near Me in St. Louis: What to Look for When Hiring

Finding a gate contractor you trust means looking beyond price. A good contractor listens to what you want, diagnoses problems accurately, and explains whether repair or replacement makes sense. Ask whether the crew that estimates the job is the crew that does the work, because continuity matters. Request references from recent gate jobs and follow up with those homeowners. Check whether the contractor is fully insured and can provide a certificate of insurance. Understand whether your city or HOA has rules on gate height, material, or color, and confirm that the contractor is aware of those rules before work begins. In St. Louis and surrounding cities like St. Peters, O'Fallon, and Ballwin, HOA architectural guidelines are common in master-planned communities and often govern gate appearance and materials.

Verify that the contractor will call Missouri 811 to locate utilities before digging post holes, as required by state law.
Ask how the contractor handles permit requirements, which vary by city and county across Greater St. Louis.
Request a written estimate that breaks down labor, materials, and any travel or site prep costs.
Confirm the warranty or guarantee on labor and materials, and what it covers.
Check that the contractor is a member of a recognized trade association, such as the American Fence Association, which signals commitment to industry standards.

A contractor who takes time to understand your needs and explains the work clearly is one you can trust to build or repair a gate that works. Contact us today to discuss your gate project and schedule a free estimate.

Gate Installation & Repair in St. Louis: Pricing Guide

Service	Price	Details
Gate Hinge and Hardware Repair	Starting at $495	Diagnosis, hinge replacement, latch adjustment, and functional testing on existing gate frames and posts
Wood or Vinyl Gate Installation (Single Leaf)	Starting at $1,200	New frame built and hung on existing sound posts, including hinges, latch, and gap adjustment for smooth operation
New Post Installation and Gate Hanging	Starting at $1,800	Posts set in concrete, new or existing frame hung on adjustable hinges, including utilities locate and site prep
Automatic Driveway Gate Operator	Starting at $2,500	Linear or cantilever operator, safety loops, remote or access control, installation and programming included
Estimate	Free	On-site assessment and written quote within 24 hours, no obligation to book or move forward

Indicative pricing, the exact cost depends on square footage, finish, and site access. Free personalized estimate within 24h at (314) 668-1539.

Frequently asked questions: Gate Installation & Repair in St. Louis

Why does my gate sag?

A sagging gate is usually caused by posts that are not set deep enough or solid enough, hinges that are worn or undersized for the gate weight, or frame racking from ground movement and moisture. Posts set in soil without concrete will settle over time, especially in freeze-thaw cycles. Hinges that are corroded or loose lose their ability to hold the gate level. The fix depends on the cause: if the posts are sound and level, new hinges and anti-sag bracing often restore function. If the posts have settled or rotted, they need to be reset or replaced in concrete. A professional inspection will tell you whether repair or replacement is the right move.

How much does a fence gate cost in St. Louis?

Gate cost depends on size, material, and condition of existing posts. A simple hinge and hardware repair starts around $495. A new wood or vinyl gate built and hung typically runs $1,200 to $2,500 or more, depending on width and height. Automatic driveway gate operators start around $2,500. The best way to know your cost is to request a free estimate. We will assess your opening and provide a clear quote based on what you need.

How wide should a fence gate be?

Gate width depends on what you want to move through it. A pedestrian gate is typically 3 to 4 feet wide. A driveway gate for a single car is usually 10 to 12 feet wide, and for two cars or larger vehicles, 14 to 16 feet or more. Check your local building department and HOA rules, as some jurisdictions set maximum heights or require sight-line clearance at corners. We recommend 6 inches of clearance on each side of the vehicle or person to avoid binding and ensure smooth operation over time.

How long does gate installation take?

A simple repair or hinge replacement takes a few hours. A new gate installation on existing posts typically takes one to two days. If new posts need to be set, add one to two days for concrete curing before the gate can be hung and tested. Automatic gate operators add a day for electrical work and programming. We will give you a realistic timeline when we provide your estimate.

Do I need a permit for a gate in St. Louis?

Permit requirements vary by city and county across Greater St. Louis. Some jurisdictions require a permit for any fence or gate work, others only for gates over a certain height or in setback areas, and some do not require a permit for residential gates at all. We recommend checking with your local building department before starting work. If a permit is required, we can help you understand what is needed. HOA communities almost always have architectural guidelines for gates, including height, material, and color, so verify those rules with your HOA before design and installation.

What is the difference between a wood gate and a vinyl gate?

Wood gates are classic, can be stained or painted any color, and are less expensive upfront. They require periodic staining or sealing to resist moisture and rot, especially at the post line where water sits. Vinyl gates are maintenance-free, do not rot or splinter, and hold their color for years. They cost more initially but save on upkeep. Both can be built to the same size and hung on the same hardware. The choice depends on your budget, aesthetic preference, and willingness to maintain the gate over time.

Can you repair my gate, or do I need to replace it?

We assess every gate to determine whether repair or replacement is the better spend. If the frame is square and the posts are solid, we often can restore function with new hinges, hardware adjustment, and anti-sag bracing. If the frame is warped, the posts are rotted or severely settled, or the gate is very old, replacement is usually the smarter choice. We will explain the options and the cost of each so you can make an informed decision.

Do you install automatic gates?

Yes. We install linear and cantilever gate operators for driveway gates, with remote controls, keypad entry, or card readers for access control. Automatic gates offer convenience and security for residential and commercial properties. We handle the electrical work, safety loop installation, and programming so the gate operates smoothly and safely. Call (314) 668-1539 to discuss your automatic gate project.

Are you fully insured for gate installation and repair?

Yes. We are fully insured and can provide a certificate of insurance on request. We are also an American Fence Association member installer, which means we follow industry standards for materials, installation, and workmanship. Our insurance covers liability and property damage during the job, and we carry workers compensation for our crews.

What areas of St. Louis do you serve for gate installation and repair?

We serve St. Louis and all surrounding cities, including St. Charles, St. Peters, O'Fallon, Florissant, Chesterfield, Ballwin, Kirkwood, Webster Groves, University City, Wildwood, Maryland Heights, Arnold, Fenton, Ferguson, Hazelwood, Clayton, Creve Coeur, Manchester, and Bridgeton. We respond to free estimates within 24 hours and travel is included in our pricing. Call (314) 668-1539 or visit our contact page to request a free estimate for your gate project.