Free on-site gate assessment - hinges, posts, and your LiftMaster or Nice gate operator checked before anything is quoted
The assessment is free and the quote is the invoice.
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AfterFast, Reliable Gate Installation Across Mountlake Terrace
Gate installation in Mountlake Terrace, WA typically runs $2,800-$9,500 depending on gate style, material, and whether you’re replacing posts or starting fresh. We’re Gatewood Fence & Gate, and we’ve been building and hanging gates since 2001. Hal Gatewood owns the shop, works the jobs, and answers the phone. When you call (877) 610-2993, you get a live person, not a voicemail.
Mountlake Terrace has a particular problem: most of its homes were built in the 1950s and 1960s, which means most of its driveway gates are hitting 60-70 years old at the same time. We’ll get into that below, because it changes how a gate should be installed here.
Key Takeaways
- Gate installation in Mountlake Terrace averages $2,800-$9,500, quoted upfront before any work starts.
- Clay soil heave and saturated ground are the two biggest local causes of gate failure here.
- Swing gates and double gates dominate Mountlake Terrace because lots are narrow.
- Every job carries the 90-Day Done Right Promise in writing.
- Call (877) 610-2993 for a free estimate. A live person answers.
Why Gatewood Fence & Gate Is Mountlake Terrace’s Preferred Gate Installation Company
We’re locally owned and owner-operated. Hal Gatewood’s name is on the shop and on every invoice. You can drive to our office and look him in the eye. That’s not a slogan, it’s how the business runs. The name is on the shop, and the shop is down the road, that is the oldest accountability there is.
Mountlake Terrace customers call us because a gate that sags in the hinge post, not in the middle, and that is where we start. We don’t swap parts that don’t need swapping. We fix the panel without the post and you’ll fix it twice, so we do it right the first time. On-site welding means your gate stays in your driveway while we work on it.
We answer every call with a live person, 24 hours a day, 7 days a week. If your gate fails on a Saturday night in the rain, you’ll talk to a human. Not a call center, not an answering service. We’ve built our reputation in Snohomish County over 29 years, and in Mountlake Terrace that reputation is built one gate at a time, because the whole city was built in one era, and when those gates start failing, they fail together.
Our Gate Installation Services in Mountlake Terrace
Here’s what we actually install, and how it applies to Mountlake Terrace homes:
Driveway Gate
Most Mountlake Terrace driveways are single-width, built for one car. A driveway gate here is usually a swing gate, not a sliding gate, because the lot widths are narrow and uniform. We size the gate to your opening, set the hinge posts in concrete with proper drainage, and hang the gate so it clears the ground through the wet season. A new driveway gate in Mountlake Terrace typically runs $3,200-$7,500 for steel or aluminum, depending on whether we’re replacing posts or reusing good ones. Wood gates run lower, but they need more maintenance in this climate.
Pedestrian Gate
Pedestrian gates in Mountlake Terrace get a lot of abuse, especially near 44th Ave W and the streets feeding into the Transit Center, where foot traffic is constant. We build them to handle that. A pedestrian gate with a new post, hardware, and latch typically runs $900-$2,200 in Mountlake Terrace, depending on material. If you’re putting a pedestrian gate next to a driveway gate, we’ll match the hardware and style so it looks intentional, not patched together.
Sliding Gate
Sliding gates are less common in Mountlake Terrace because most lots are 50 feet wide or less, and a sliding gate needs room to travel sideways. But they do show up on the wider lots near Lake Ballinger and on the few commercial properties in the city. A sliding gate installation in Mountlake Terrace runs $5,500-$12,000 with a tracked or cantilevered system. Sliding gates hold up better in wind because the load is carried differently than a swing gate.
Swing Gate
Swing gates are the workhorse of Mountlake Terrace. Single and double swing gates fit the narrow lots and short driveways that define this city’s housing stock. A new double swing gate in Mountlake Terrace typically runs $4,800-$9,500, installed with new posts set below the frost line and through any clay into stable soil. In the blocks near Lake Ballinger, we set footings deeper, because the water table sits higher and post bases rot faster than they look from above. A gate sags in the hinge post, not in the middle, so that is where we start, and in Mountlake Terrace the hinge post is usually the weak link.
For more detail on what goes into a new gate, see our Gate Installation page, which covers the process from measure to final walkthrough.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Mountlake Terrace
We install and service operators from FAAC, BFT, Linear, and Viking, among others. These are the brands most common on Mountlake Terrace gates, and we stock parts for them locally so we’re not ordering small hardware from across the country while your gate sits open. If you have an existing operator that’s still good, we’ll build the new gate around it. If it’s failing, we’ll tell you straight what it costs to replace and what it costs to keep it running another few years. No pressure, just numbers.
Common Gate Installation Problems We See in Mountlake Terrace Homes
- Clay soil heave. Mountlake Terrace sits on a glacially deposited plateau with heavy clay-bearing soils. Those soils expand when wet and contract when dry. Every fall, when the 38-42 inches of annual rain starts saturating the ground, wooden and metal gate posts heave out of plumb. A gate that swung fine in August starts binding at the latch by November. The fix is a deeper footing with gravel drainage, not shimming the hinges and hoping.
- Rotted cedar and fir hinge posts. Most 1950s and 1960s Mountlake Terrace homes got cedar or fir gate posts at the original build. Sixty-plus years of wet winters have turned a lot of those below-grade sections into sponges. We see posts that look fine above the soil line but have nothing solid holding them below. That’s why we probe the base before quoting any gate that’s more than 20 years old.
- Saturated ground near Lake Ballinger. The east side of Mountlake Terrace, especially the blocks closest to Lake Ballinger and along McAleer Creek, sits in lower-drainage zones where the water table stays elevated well into summer. Gate posts there show accelerated base rot and corrosion, sometimes on gates that look sound from the street. This is a pattern local techs learn to check for before quoting a simple hinge replacement.
- Wind load on solid infill gates. Fall storms bring wind that hits solid gate panels like a sail. If the hinge posts are already weakened by age and moisture, those storms are when hinges rip out or frames twist. We build Mountlake Terrace gates with the wind load in mind, not just the dead weight. That means heavier hinges, through-bolts instead of lag screws, and posts set in concrete with the right depth for the soil, not just the minimum code.
Pricing for Gate Installation in Mountlake Terrace, WA
Here’s what you can expect to pay in Mountlake Terrace, with the understanding that every gate is different and we quote exactly before any work starts:
| Gate Type | Typical Mountlake Terrace Price Range |
|---|---|
| Pedestrian gate (wood or steel, new post, hardware) | $900 - $2,200 |
| Single swing driveway gate (steel or aluminum) | $3,200 - $7,500 |
| Double swing driveway gate (steel or aluminum) | $4,800 - $9,500 |
| Sliding driveway gate (tracked or cantilevered) | $5,500 - $12,000 |
| Gate operator/automation (added to any gate) | $1,800 - $4,200 |
What moves the price? Whether we’re replacing posts or reusing them, the soil conditions where the posts go in, and whether you want solid infill or open pickets. Solid infill costs more in material and needs stronger hardware for the wind load we get around Mountlake Terrace.
We quote the full price before any work starts, and the price we quote is the price you pay. No trip charge inside the county, a free second opinion on any written estimate, $40 off any repair over $200, and a permanent 10% discount for seniors and veterans. Call (877) 610-2993 and we’ll give you a real number.
We Also Serve Cities Near Mountlake Terrace
We cover all of Mountlake Terrace and the surrounding area, including Alderwood Manor, Brier, Lake Forest Park, and Edmonds. If you’re a few minutes from the city line, you still get the same live-answer phone, the same upfront pricing, and the same 90-Day Done Right Promise. Hal Gatewood’s name is on the shop, and the shop is down the road. That applies to every job we take.
Serving Mountlake Terrace, WA - Our Local Coverage Area
We’re based in the Mountlake Terrace area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Gate Installation in Mountlake Terrace
Clay soil expands when wet and shrinks when dry, which pushes shallow-set gate posts out of plumb over a single rainy season. In Mountlake Terrace, we set post footings deeper than the minimum, through the clay layer wherever possible, and we add gravel at the base of the hole for drainage. This keeps the post stable through the wet winter months when the ground swells. Call (877) 610-2993 and we’ll assess the soil at your gate site before quoting.
Yes, if it’s built for it. Solid wood infill catches wind, so the hinges, posts, and frame need to be sized for that load, not just the weight of the gate. In Mountlake Terrace, we use heavier hinges on solid gates, through-bolt them where we can, and set posts deeper than a standard install. The gate itself is rarely the failure point, it’s the hinge connection and the post footing. We build all three to handle the fall storm season.
The elevated water table near Lake Ballinger keeps the soil saturated for weeks after a rain, and that soft ground lets the hinge post shift. Combine that with a cedar or fir post that’s been in the ground since the 1960s, and the base is likely rotting below grade. We recently installed a new double swing gate on 56th Ave W near Lake Ballinger, where the original cedar hinge posts had rotted below grade in exactly this way. We set two pressure-treated post footings in concrete with gravel drainage, hung a LiftMaster operator with safety photocells, and that gate has stayed plumb through the fall rains. Call us at (877) 610-2993 and we’ll probe the post bases before we quote anything.
Usually not. Sliding gates need space to travel sideways, and most Mountlake Terrace lots are 50 feet wide or less, so there isn’t room without eating into the yard. A swing gate, single or double, fits the narrow driveways better. The exception is a wide lot near Lake Ballinger or a commercial property, where a sliding gate makes sense. We’ll measure and tell you what actually fits, not what we’d rather sell you.
Every automatic gate operator has a manual release, usually a keyed lock or a pull handle on the operator itself. Pull the release to disengage the motor, then push the gate open by hand. Do not force it, and do not try to re-engage the motor while the gate is moving. If your operator is a LiftMaster, FAAC, BFT, or Viking, we can show you exactly where the release is when we install it so you know what to do in a blackout. If you ever can’t get the gate open, call (877) 610-2993, we answer live 24/7 and will walk you through it, and if needed, someone will come out.
Call Gatewood Fence & Gate for Gate Installation in Mountlake Terrace
If your gate is old, sagging, storm-damaged, or just not doing its job anymore, we’ll give you a straight answer and a written price. We install swing gates, double gates, security gates, and sliding gates, plus operators and access control, all backed by the 90-Day Done Right Promise in writing. Call (877) 610-2993 for a free estimate. A live person answers, day or night. Hal Gatewood’s name is on the shop, and the shop is down the road.
Written by Hal Gatewood, Owner at Gatewood Fence & Gate, serving Mountlake Terrace since 2001.