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.
Before
After
Before
After
Before
AfterFast, Reliable Gate Installation Across Mercer Island
A new automatic gate on Mercer Island typically runs $4,800 to $18,500 installed, depending on whether you’re doing a simple single swing gate or a custom double slide gate with intercom and camera integration. Most installations on the island take two to five working days once materials are on site, with a detailed written quote agreed before any work starts. We’ve been building and hanging gates here long enough to know that Mercer Island isn’t like the mainland, and the hardware specs have to reflect that. Call (877) 610-2993 and you’ll get Hal or one of his crew on the line, not a recording.
Why Gatewood Fence & Gate Is Mercer Island’s Preferred Gate Installation Company
We’re locally owned and owner-operated, which on Mercer Island means something specific. Hal Gatewood founded this company in 2001 and still answers the phone himself half the time. The other half, it’s someone who’s been on our crew for years and knows the difference between a hinge post on East Mercer Way and one on a Satterlee ridge lot. Our Gate Installation work carries the 90-Day Done Right Promise in writing. If a gate we installed sags, creaks, or drifts out of alignment within 90 days, one call brings us back. No runaround, no “we’ll see what we can do.” It’s right there on the invoice.
Mercer Island customers don’t tend to hire the cheapest bid. They’ve been through that with national outfits that quote one number on the phone and pad it at the door. What they want is a name they can verify, a shop address they can drive past, and a crew that actually shows up when promised. That’s us. We schedule Mercer Island work with realistic windows because we know the bridges back up and nobody needs a gate crew idling in traffic on I-90. We’ve installed gates off Shore Club Drive, up by Gallagher Hill, and along the winding stretches of East Mercer Way where driveways climb and every post footing matters.
Key Takeaways:
- Written quotes agreed before work starts, no surprises at the door
- 90-Day Done Right Promise on every installation
- Live person answers 24/7 at (877) 610-2993
- We stock marine-grade hardware for Mercer Island’s humidity
- Free estimates, $40 off any repair over $200, permanent 10% discount for seniors and veterans
Our Gate Installation Services in Mercer Island
Driveway Gate Installation
The long private driveways on Mercer Island’s estate properties are exactly where a heavy, well-built gate earns its keep. We fabricate and hang driveway gates that open smoothly for years, not months. On the island’s newer luxury builds, we’re frequently asked to match the gate’s finish to the home’s custom metalwork, so we powder-coat on order and weld on site rather than hauling anything off to a shop off-island.
Pedestrian Gate Installation
A separate pedestrian gate keeps foot traffic off the driveway gate, which matters on Mercer Island lots where the driveway doubles as a play area or garden path. We install pedestrian gates with the same hardware quality as the main driveway gate, using sealed hinges and stainless fasteners so the gate doesn’t seize up in the island’s damp winters. These gates are often paired with the same access system as the main gate, so one intercom or keypad controls both.
Sliding Gate Installation
Sliding gates are the practical choice on Mercer Island driveways that slope toward the house and can’t accommodate a swing gate’s arc. We’ve installed rack-and-pinion slide gates on teardown-rebuild lots off West Mercer Way, integrating LiftMaster and DoorKing operators with the homeowner’s smart-home system and adding safety photocells and loop detectors to prevent entrapment. On near-shore lots, we spec sealed operators and marine-grade stainless fasteners because the lake humidity eats standard hardware faster than you’d believe.
Swing Gate Installation
Swing gates remain the most common style on Mercer Island, especially on the 1950s and 60s ramblers and split-levels that make up much of the island’s original housing stock. Many of those older homes still have their original operators, which lack modern entrapment protection. We retrofit safety photocells and edge sensors under UL 325 standards as part of any swing gate job. On a 2008 custom estate off East Mercer Way, our crew replaced a sagging double swing gate with a new FAAC hydraulic operator and reinforced the hinge posts using deeper post footings after frost-heave shifted the original alignment.
We also build and install double gates for wide estate entrances and security gates with integrated intercom, camera, and keypad access. Mercer Island’s expectation for a security gate isn’t just a barrier, it’s a matched component of the home’s entry architecture. We fabricate custom ornamental designs and weld on site so the gate stays in your driveway and the work stays under our control.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Mercer Island
We’re certified to service nine major gate brands, and for Mercer Island installations we lean heavily on three: FAAC for hydraulic swing operators that handle the island’s heavy custom gates, LiftMaster for slide gates and smart-home integration, and DoorKing for reliable access-control systems on estate properties. We stock common parts for these brands at our Seattle office, which means a Mercer Island repair or tune-up usually doesn’t wait a week for parts to ship. When a homeowner asks about Ghost Controls for a lighter gate or Viking for a commercial-grade barrier arm, we can quote and source those too, but we’ll tell you straight what suits the gate and the site, not what we happen to have on the shelf.
Common Gate Installation Problems We See in Mercer Island Homes
- Accelerated rust on iron hinge posts and gate frames: The persistent lake humidity in Mercer Island corrodes exposed steel faster than inland Eastside suburbs, and we routinely see sag correction needed within five to seven years on near-shore lots that never sat on the water in anyone’s mind. We counter by specifying marine-grade stainless fasteners and sealed operators even on properties that map-read as inland.
- Frost-heave shifting post footings: Wet Pacific Northwest winters cause subtle soil movement on Mercer Island that throws swing gate auto-close alignment out of spec and strains the operator until it fails. Deeper post footings and proper drainage at the base of the post are the fix, and we inspect that on every install.
- 1970s-era operators lacking entrapment protection: Aging estates with original swing-gate operators often don’t meet current UL 325 safety standards for photocells and edge sensors. We retrofit these during installation, which matters on Mercer Island where kids and delivery drivers use the same driveway daily.
- Operator seals and circuit boards degrading early: The island’s damp air shortens the life of operator internals, particularly on near-shore lots where seals fail and moisture gets at the circuit boards. We spec sealed operators and gasketed enclosures as standard, not as an upgrade on the quote.
Mercer Island’s fully lake-surrounded geography means gate hardware on near-shore lots corrodes at a pace closer to a saltwater coastal installation than an inland Seattle suburb. That’s the single most important spec difference on this island, and it’s one that a crew that only works the mainland won’t catch. We’ve pulled rusted hinge pins out of gates that were “installed last year” by someone who used zinc-plated hardware from a big-box store. The gate looked fine from the road. The metal told a different story.
What this means for your Mercer Island gate: We specify marine-grade stainless fasteners, sealed operators, and powder-coated finishes even on properties that don’t appear to be waterfront on a map. The lake’s humidity doesn’t care about your property line. On the island’s many lakefront and near-shore lots, gate hardware corrodes on a timeline closer to a coastal installation than a standard Seattle-area spec. That’s not a guess. It’s what we’ve seen across 98040 for over two decades.
Pricing for Gate Installation in Mercer Island, WA
We quote every Mercer Island job in writing before any work starts. The price we agree on is the price on the invoice, period. Here’s what typical installations run:
- Pedestrian gate installation: $1,800 to $4,200 for a standard ornamental steel gate with sealed hinges and stainless hardware
- Single swing driveway gate: $4,800 to $9,500 depending on width, weight, and operator type
- Double swing gate with operator: $7,500 to $16,000 for a custom fabricated gate matched to the home’s metalwork
- Sliding gate with operator and safety edges: $6,200 to $14,500, with rack-and-pinion drives and smart-home integration on the higher end
- Full security gate with intercom and camera integration: $12,000 to $18,500 for a complete access-control system on a custom gate
What moves the number on Mercer Island specifically: the size and weight of the gate, whether the posts need replacing or can be reinforced in place, the operator brand and type, and how much custom fabrication the design calls for. The island’s humidity means we don’t cut corners on hardware, and property setbacks and slope conditions sometimes mean more extensive post work. Estimates are free. Call (877) 610-2993 and we’ll schedule a measure, give you a written price, and never change the number at the door.
We Also Serve Cities Near Mercer Island
If you’re just off the island in Newcastle, Bellevue, Bryn Mawr-Skyway, or Boulevard Park, we handle gate installation there too. Our Gate Installation in Mercer Island work covers the whole 98040 zip code, and scheduling for nearby cities works the same way: written quote, agreed price, no surprises. Dispatch and scheduling are coordinated from our Seattle office, with crews serving Mercer Island locally.
Serving Mercer Island, WA - Our Local Coverage Area
We’re based in the Mercer Island 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 Mercer Island
Because Lake Washington wraps the entire island, the humidity level on Mercer Island is measurably higher than inland suburbs like Bellevue or Issaquah, and that moisture reaches every lot on the island, not just shoreline properties. Standard zinc-plated hardware corrodes years earlier here, so we use marine-grade stainless fasteners and sealed operators on every gate installation across 98040. It costs a little more up front and saves a hinge-post replacement five years in. Call (877) 610-2993 for a quote that specs the right hardware from the start.
Sometimes, and when we can’t, a slide gate is usually the better answer. A swing gate needs flat, level ground for its full arc, and on a sloped Mercer Island driveway that arc can bind or strain the operator. We assess the grade, measure the setback, and if a swing gate won’t survive there, we’ll tell you before you spend a dollar and quote a sliding gate that runs parallel to the driveway instead. That’s the kind of decision you want made honestly, not after the gate’s been hung and starts fighting the slope.
Marine-grade stainless fasteners, sealed hinge bearings, and a powder-coated finish applied after welding are the three things that keep an ornamental iron gate from rusting prematurely near Mercer Island’s shore. We weld on site, grind the welds clean, and then send the gate for powder coating, which seals the metal far better than wet paint. For near-shore lots in 98040, we also spec sealed operators and gasketed enclosures so the electronics don’t fail from the damp air alone. If an existing gate has already started to rust, we can often repair and refinish it rather than replace it.
Yes, and that’s exactly the kind of repair-first job we prefer. The gate itself is usually still solid, and the problem is the operator and possibly the hinge posts. We can mount a new FAAC hydraulic operator on the existing gate, rebuild the hinge posts if they’ve sagged, and add modern safety photocells under UL 325, all without tearing out a gate that’s been on the house since the 1960s. You keep the look, lose the grinding noise, and gain entrapment protection that wasn’t required when the original operator was installed.
Yes. Any automatic gate operator installed in Mercer Island, Washington must meet UL 325 safety standards, which means photocells, edge sensors, or both, depending on the gate type and location. That applies to slide gates, swing gates, and barrier arms on both residential and commercial properties. We install and test entrapment protection as standard on every job, and we’ll show you how it works before we leave, not just wave at it from the truck.
Written by Hal Gatewood, Owner at Gatewood Fence & Gate, serving Mercer Island since 2001.
Call (877) 610-2993 for a free estimate on gate installation in Mercer Island. A live person answers, the price is in writing, and the work is done right or we come back.