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.
Fast, Reliable Gate Repair Across San Anselmo
When your gate stops opening, starts grinding, or sags so badly it scrapes the driveway, you need a repair crew that knows San Anselmo’s particular quirks. Most properties here sit on narrow, sloping lots off Sir Francis Drake Blvd, which means gate post footings shift, operators strain, and safety sensors go out of alignment after a wet winter. Calder Gate Repair handles all of it: electric gate repair, automatic gate repair, hinge and post work, gate realignment, lock repair, and weld and rust repair. We’re the dedicated gate repair specialist inside the Relay Home Co. family, and our technicians arrive in uniform with a live, trackable arrival time. Call (903) 417-0793 and a real person answers, 24/7.

Why Calder Gate Repair Is San Anselmo’s Preferred Gate Repair Company
San Anselmo homeowners tend to ask the same question: can you actually fix the footing, or are you just going to tighten the hinge and hope for the best? We fix the footing. Our crew has worked driveways off San Anselmo Ave, along Red Hill, into Sleepy Hollow, and up the hillsides near Fairfax, so we know what happens when winter rain saturates clay-heavy soil and posts start leaning. That local pattern recognition is why our Gate Repair approach starts with the post and the ground it sits in before we touch the operator.
Every San Anselmo job carries three guarantees that are written, not implied: a written price before any work starts, a written guarantee on every repair, and a free second visit if the repair fails within the 365-Day Done Right Promise. We’re part of Relay Home Co., established 2009, and each location is independently owned and operated under The Relay Visibility Guarantee. You’ll know who’s coming, when they’ll arrive, and what the job costs before a single bolt is turned. Led by Nico Alvarez, our San Anselmo crews are background-checked and factory-familiar with the brands on your gate.
Response time matters, and we don’t hand you a four-hour window. You get a live arrival time you can track from your phone. For non-emergency repairs in San Anselmo, we typically schedule within one to two days. For an emergency, like a gate stuck open overnight or a broken opener trapping a car inside, we prioritize same-day dispatch whenever a crew is available.
Gate Welding in San Anselmo
Gate Welding in San Anselmo is the fix most homeowners don’t know they need until a hinge tears out of the frame or a decorative picket snaps. A sagging gate on a sloped lot concentrates stress at the hinge line. The gate frame cracks, the weld fails, and suddenly the whole panel hangs crooked. We cut out the damaged section, weld in new steel, and grind it back clean so the gate swings true again. Typical gate welding work in San Anselmo runs $180 – $450 depending on the extent of the crack, the thickness of the steel, and whether we need to add a reinforcing gusset plate.
When Welding Is the Right Fix
Not every sag calls for welding. Sometimes the issue is the post, not the gate panel. We tell you which it is before we start, because welding a gate that’s actually sitting on a shifted post just moves the failure point. A proper repair addresses the structure that’s causing the crack.
Rust Repair and Structural Reinforcement
Gate bottoms near sprinkler overspray rust first. We weld in patch plates, reinforce thin sections, and treat the area so the repair holds through San Anselmo’s wet months. Weld repairs on rusted gate panels run $220 – $500, including grinding, patching, and protective coating.
Commercial Gate Repair in San Anselmo
Commercial Gate Repair in San Anselmo covers apartment complexes, office parking lots, and the small retail plazas along Sir Francis Drake Blvd and San Anselmo Ave. Commercial gates here don’t sit on flat, forgiving terrain. They’re often slide gates on tracks that have been resurfaced over, or swing gates on posts that pick up runoff from poorly pitched lots. We work on Viking, DoorKing, and Elite operators, plus LiftMaster and FAAC when those show up on mixed-use properties. Commercial gate repair in San Anselmo typically runs $250 – $800 for a service call and common component replacement, with full operator replacement running higher based on brand and control hardware.
Slide Gate Track and Safety Circuit Work
When a commercial slide gate stops mid-travel, it’s usually the safety photocell tripping because the track shifted after driveway work. We realign the track, re-level the operator, and test the reversal system so the gate doesn’t close on a car or a person. That safety circuit work is part of every commercial repair, not an upsell.
Operator and Loop Detector Replacement
San Anselmo’s wet season is hard on loop detectors, especially on creekside properties in the flats. When a loop detector shorts, the gate stops reading vehicle presence and starts behaving erratically. We replace the detector, tune the sensitivity, and verify the full open-close cycle. Operator replacement on a commercial gate in San Anselmo typically runs $1,200 – $2,800 including programming and safety testing.

Trusted Brands We Service in San Anselmo
We’re factory-trained on nine major gate opener brands, including Viking, Ghost Controls, DoorKing, and Elite. That matters in San Anselmo because a hilltop estate gate running a Viking operator needs different programming than a Sleepy Hollow driveway gate on a Ghost Controls board. We keep common control boards, limit switches, and safety photocells in our Bay Area parts inventory, which means faster turnaround for San Anselmo customers who don’t want to wait a week for a sensor. If we don’t have the part on the truck, we know exactly what to order and how long it takes to get here.
Common Gate Repair Problems We See in San Anselmo Homes
- Sagging swing gate panels that fail at the hinge post: Winter soil movement on sloped San Anselmo lots shifts post footings. The gate frame itself is fine; the post is the problem. We re-plumb the post, repour the footing, and only then address hinge wear.
- Slide gate operators out of alignment after driveway work: When a driveway gets resurfaced or drainage gets rerouted, the track elevation changes. The gate starts tripping its safety photocell and stopping mid-travel. We re-level the track and reset the operator limits.
- Control boards and loop detectors corroded by wet-season runoff: Gates near creek-adjacent properties, especially in the flats near Fairfax, see more moisture than the electronics are rated for. We replace corroded boards and seal the housing properly.
- Keypad and intercom systems malfunctioning after storms: Intermittent entry is often a low-voltage wiring issue or a failing keypad board, not the operator itself. We diagnose the whole circuit, not just the panel.
Pricing for Gate Repair in San Anselmo, CA
Here’s what you can expect before you call. A service call and diagnostic in San Anselmo runs $85 – $125, and that fee is waived when we do the repair. Common electric gate repair work, like replacing a limit switch (the small sensor that tells the gate when to stop) or a safety photocell, runs $180 – $340. Operator board replacement typically runs $350 – $650, and a full opener replacement on a residential gate runs $900 – $2,400 depending on brand and horsepower. Gate welding runs $180 – $500 as covered above. Every quote is written and agreed before work starts. The number on the invoice is the number you approved at the door. Call (903) 417-0793 for an exact quote, estimates are free.
We Also Serve Cities Near San Anselmo
If you’re in Fairfax, Kentfield, San Rafael, or Larkspur, our crews cover those areas too. The same written guarantees and trackable arrival times apply. See our full Gate Repair in San Anselmo service area details or call (903) 417-0793 to book.
Serving San Anselmo, CA - Our Local Coverage Area
We’re based in the San Anselmo 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 About Gate Repair in San Anselmo
The hinges aren’t your problem. Most San Anselmo properties sit on sloped lots where winter rain saturates clay soil and the hinge post footing shifts, so the post leans and the gate sags no matter how many times you tighten a bolt. The fix is re-plumbing the post and repouring a deeper footing, then re-hanging the gate. We also cut and weld reinforcement plates when the gate frame has cracked from the repeated stress. Call (903) 417-0793 and we’ll assess whether the post, the gate, or both need work.
A proper automatic gate installation includes the gate and operator plus the concrete groundworks for posts, the electrical power run, safety edges or photocells, and reversal testing so the gate stops and reverses if it hits an obstruction. We also verify that the gate’s speed and force settings meet current safety standards. In San Anselmo, where sloping driveways and narrow access points are common, we pay extra attention to the post foundations and drainage so your gate doesn’t shift after the first winter. Installation is measured, ordered, and scheduled, with a free measure and written price first.
Most San Anselmo gate repairs are completed in one to three hours on site. Simple fixes, like a failed limit switch or a misaligned photocell, can often be done same-day when you call before mid-morning. Larger jobs, like repouring a shifted hinge post or welding a cracked frame, take longer because concrete and weld work need cure time. Emergency calls, like a gate stuck open overnight, get priority dispatch whenever a crew is available. Call (903) 417-0793 and we’ll give you a straight answer on timing.
Yes. Our technicians are factory-trained on LiftMaster, FAAC, and DoorKing, along with Viking, Ghost Controls, and Elite. We carry common boards, limit switches, and safety sensors for these brands in our Bay Area parts inventory, so San Anselmo customers aren’t waiting on a backordered part from across the country. We diagnose the whole operator circuit, not just the board, so a recurring problem doesn’t come back in three weeks.
Yes. Automatic gates in residential and commercial settings must have functioning safety devices, like photocells or contact edges, that stop and reverse the gate when something is in the path. That’s not just a manufacturer recommendation; it’s a safety requirement for operators installed under current standards. We test the reversal system on every repair and every installation we do in San Anselmo. If your gate doesn’t reverse when it meets pressure, don’t use it until it’s fixed. Call (903) 417-0793 and we’ll send a technician.
If your gate is sagging, grinding, or refusing to open, call (903) 417-0793 now. Calder Gate Repair serves all of San Anselmo, from the flats near San Anselmo Ave to the hills off Sir Francis Drake Blvd, with written pricing, real arrival times, and a 365-Day Done Right Promise on every job. A live person answers, day or night.
Written by Nico Alvarez, Owner at Calder Gate Repair, part of the Relay Home Co. family.





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