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 Brentwood
Gate repair in Brentwood usually means one of three things: a swing gate that’s dragging or sagging, a slide gate that’s grinding or stalling, or an opener that’s stopped responding entirely. Most repairs we handle in Brentwood run $180 – $340 before parts, and we can typically have a technician out the same day you call. If your gate is stuck open, stuck shut, or making a sound it shouldn’t, call us at (903) 417-0793 and a live person will answer, day or night.

We know Brentwood’s streets, its newer subdivisions east of Highway 4 and the older ranch properties off Balfour Road and Concord Avenue. We know the soil shifts. We know what those shifts do to gate posts. And we quote a written price before any work starts, so the number we agree on is the number you pay.
Why Calder Gate Repair Is Brentwood’s Preferred Gate Repair Company
Calder Gate Repair is the dedicated gate repair specialist inside the Relay Home Co. family, founded in 2009. We’re not a handyman service that occasionally looks at a gate. We’re a team that works on gate openers, hinges, posts, tracks, and safety systems every day, and we dispatch uniformed, background-checked technicians with a live, trackable arrival time. No four-hour windows. You see where we are, when we’ll arrive, and who’s coming.
Brentwood homeowners tell us the same things matter: a real person on the phone, a price that doesn’t change at the door, and a repair that holds. That’s why every Calder job includes the 365-Day Done Right Promise. If the repair fails within 365 days, we come back at no charge. It’s written on every job, not buried in fine print. We also follow what we call the Relay Standard: live arrival time, before-and-after photos, and a digital invoice you pay from a link. No paper chase, no phone tag.
We answer calls 24/7 with a live person, not a voicemail tree. When your gate won’t close at 11 p.m. and your dog is eyeing the opening, that matters. Nico Alvarez, who leads Calder Gate Repair, has built the team’s reputation on showing up when we say we will and fixing the actual problem, not the symptom.
Sliding Gate Repair in Brentwood
Sliding gate repair in Brentwood often comes down to the rack and pinion, the toothed bar and gear that move the gate along its track. Our local site conditions are tough on this system. Dust and grit from open lots, driveway gravel, and dry summer conditions work into the rack teeth and accelerate wear. We regularly see slide gates stalling or reversing mid-travel on FAAC and BFT operators because the rack has worn unevenly and the motor is fighting itself.
A Brentwood slide gate that grinds or shudders as it moves usually needs a new rack section, a clean and re-greased track, and operator recalibration so the motor isn’t over-torquing. In some cases, the post footing has settled and the whole track is out of level. Repairs like this typically run $260 – $450 depending on how much rack needs replacing and whether the track needs re-bedding.
Rack and Pinion Replacement
When rack teeth wear down or snap, the pinion gear slips. You’ll hear a rapid clicking or grinding, and the gate will lurch. We replace worn rack sections with new material matched to your operator, then set the motor torque limits properly so the new rack isn’t immediately hammered.
Old rack on a new motor is a waste of money. We won’t sell you that job.
Track Re-Leveling and Post Footing Repair
Brentwood’s clay-heavy soil expands and contracts with moisture, and that movement can drop one end of a slide gate track. The gate then drags on the wheels or rides up over the stop. We re-level the track, repair the footing, and set the gate so it travels cleanly. Expect this to cost $300 – $550 when footing work is needed.
Wrought Iron Gate Repair in Brentwood
Wrought iron gate repair in Brentwood is common on the older custom homes and ranch-style properties that line streets like Balfour Road and Marsh Creek Road, where ornamental gates are part of the curb appeal. Bent pickets, cracked welds, sagging hinge posts, and rust at the base are the typical calls. When a wrought iron gate sags, Brentwood homeowners often assume the gate itself is bent, but the real culprit is frequently the hinge post rotating in the ground.
Because Brentwood sits on expansive clay, a hinge post can lean outward over a single wet winter. The gate then drops at the latch side, the panels separate at the seams, and the gate won’t close without being lifted. Re-hanging the panel without re-setting the post fixes nothing. We set the post in a properly sized footing with proper depth, then re-hang and re-weld as needed. Wrought iron repairs typically run $220 – $480, depending on how much material needs cutting, welding, or replacing.

Post Re-Setting in Expansive Clay
We dig out the old footing, re-set the post plumb, and pour a new footing that can hold against Brentwood’s soil movement. Then we re-hang the gate so the weight loads the hinges correctly. This is the durable fix, and it’s what our Gate Repair team does most often on iron gates in this area.
Weld and Rust Repair
Cracked welds at the hinge mounts and rust-through at the bottom rail are the two most common structural failures we see on Brentwood wrought iron gates. We grind out the old weld, re-weld with proper penetration, and treat rusted areas before they compromise the gate’s frame. Small weld repairs start around $150; full bottom-rail replacement runs more.
Trusted Brands We Service in Brentwood
We’re factory-familiar with nine major opener brands, including LiftMaster, FAAC, BFT, Linear, and Viking. That means we diagnose by behavior and error codes, not guesswork. For Brentwood customers, we carry common control boards, limit switches, remotes, and safety sensors on our trucks, so many repairs are done in one visit. If we need to order a part, we tell you exactly when it arrives and schedule the return visit before we leave.
Common Gate Repair Problems We See in Brentwood Homes
- Hinge post rotation on swing gates. Brentwood’s expansive clay lets moisture in and pushes posts outward. The gate sags at the hinge side first, then the latch side drops. We fix the post, not just the panel.
- Rack and pinion wear on slide gates. Dust from nearby open lots and gravel driveways grinds into the rack teeth. FAAC and BFT operators then stall or reverse mid-travel because the motor is fighting a worn rack.
- Safety sensor failures from sun and debris. Photocell eyes get coated with dust, spider webs, and pollen, and direct sun can blind them. The gate stops mid-cycle or refuses to close, and UL 325 entrapment protection is no longer reliable until the sensors are cleaned, shielded, or replaced.
- Opener capacitor and limit switch failures. Hot Brentwood summers put extra load on opener electronics. A gate that hums but won’t move, or one that travels too far and bounces back, usually points to a failed capacitor or a bad limit switch, the small sensor that tells the gate when to stop.
Pricing for Gate Repair in Brentwood, CA
Most gate opener repairs in Brentwood run $180 – $340 before parts. Sliding gate rack and track work runs $260 – $550. Wrought iron gate repairs, including post re-setting and welding, typically run $220 – $480. A full operator replacement, if the motor is beyond repair, starts around $750 including installation and safety testing. Every price is written down and agreed to before we turn a single bolt. Estimates are free, and the 365-Day Done Right Promise means if our repair fails within a year, we return at no charge. Call (903) 417-0793 for an exact quote.
We Also Serve Cities Near Brentwood
Beyond Brentwood, our teams regularly handle Gate Repair in Brentwood and the surrounding East Contra Costa communities. We serve Oakley, Discovery Bay, Antioch, and Clayton, bringing the same written pricing and same 365-Day Done Right Promise to every job. If you’re just outside Brentwood, call and we’ll let you know our next available time.
Serving Brentwood, CA - Our Local Coverage Area
We’re based in the Brentwood 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 Brentwood
The hinge-side sag points to the post moving in the ground, not a bent gate panel. Brentwood’s clay-heavy soil expands when wet and shrinks when dry, which slowly pushes gate posts outward. The gate then drops at the hinge side, and the latch misaligns. The durable fix is re-setting the post in a proper footing, then re-hanging the gate. Call (903) 417-0793 and we’ll confirm what’s moving before quoting the job.
Your gate should have two independent safety systems: photocell sensors across the gate opening and a reversing edge or current-sensing system that stops and reverses the gate if it hits something. If your gate doesn’t stop and reverse when you block the photocell beam with your hand, the entrapment protection is not working. This is a safety issue under UL 325 standards, so we recommend a trained technician test and repair it. We check both systems on every Brentwood gate repair we do.
Stalling halfway is usually a worn rack and pinion, a track that’s out of level from soil movement, or both. The motor is fighting resistance and tripping its internal limits. In Brentwood, dust and grit from open lots and gravel driveways accelerate rack wear, and our clay soil drops track sections out of level. We’ll inspect the rack, track, and footings and tell you exactly what’s failing before we quote the repair. Estimates are free.
Yes. We cut out bent sections, straighten what’s salvageable, and weld in new material as needed. Depending on how the gate was hit, the hinge posts may also be out of plumb, so we check those before deciding the scope. Wrought iron repairs in Brentwood typically run $220 – $480 for moderate damage. Call (903) 417-0793 and we’ll give you a written price on-site.
We do both. If your existing operator is repairable, we’ll fix it and tell you honestly if the repair will last. If it’s beyond saving, we’ll quote a replacement with installation and full safety testing. New operator installations are measured, ordered, and scheduled, so we never promise same-day installation. We do promise a free measure and a written price before any work begins.
Call Calder Gate Repair in Brentwood
If your gate is stuck, grinding, sagging, or refusing to close, call (903) 417-0793 now. A live person answers 24/7. We’ll schedule a technician with a trackable arrival time, diagnose the problem at your Brentwood home, and put a written price in your hand before any work starts. The 365-Day Done Right Promise covers every repair, and if something isn’t right, we come back at no charge. That’s the Calder standard, and it’s what Brentwood homeowners deserve.
Written by Nico Alvarez, Owner at Calder Gate Repair, serving Brentwood and the surrounding East Contra Costa communities with honest gate repair and written pricing.





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