Automated gate repair, maintenance and upgrades
Service, repair and access control for industrial, commercial, HOA and residential gates across King and Pierce County. Our own technicians, every major brand, and the gates other companies installed.
Trinity Gate job photoRepair, maintenance and upgrades for the gate you already have
Our focus is the gates already in place: diagnosing failures, scheduled maintenance, and bringing older systems up to date. We take on a small number of new installs each year.

Gate repair
Diagnosis and repair for industrial, commercial and residential automated gates and access control.

Maintenance plans
Scheduled inspections and upkeep from $30/mo per operator, with repair and dispatch discounts.

Upgrades & access control
New operators, call boxes, keypads, cellular entry and UL 325 safety retrofits on the gate you have.

New gates
A small number of new installations each year, mainly for existing commercial clients.
Priced per operator, published up front
Scheduled visits catch worn rollers, loose wiring and dirty sensors before they shut the gate down. Commercial gates: two to three visits a year. Residential: at least one.
Platinum
- Repairs, labor & parts20% off
- Dispatch chargeFree
- Maintenance visits1 or 2 a year
- Priority schedulingYes
Gold
- Repairs, labor & parts15% off
- Dispatch charge50% off
- Maintenance visits1 or 2 a year
- Priority schedulingYes
Silver
- Repairs, labor & parts10% off
- Dispatch charge10% off
- Maintenance visits1 or 2 a year
- Priority schedulingYes
Bronze
- Repairs, labor & parts10% off
- Dispatch charge10% off
- Maintenance visitsNone
- Priority schedulingNo
All plans include access to 24-hour emergency dispatch. HOAs, multi-gate sites and commercial properties get custom pricing.
From a single driveway to a substation fence line
Industrial
Security gates and access control that restrict entry to authorized personnel, including crash-rated barrier gates.
Energy & infrastructure
Perimeter security for oil, gas and energy sites, data centers and other critical infrastructure.
Commercial, HOA & multi-family
Slide, swing and traffic-control gates for property managers, HOAs, storage facilities and multi-unit buildings.
Residential
Custom gates with your builder or designer, and service for the gate you already have.

In-house technicians, not subcontractors
Our work is done by our own crews. Customers name them in their reviews: Greg, Nathan, Tommy, Freddy and Brandon in the field, and the office team who set up maintenance plans and follow up after the visit.
We service equipment from a wide range of manufacturers, so an aging operator or an outdated keypad doesn’t automatically mean a new gate.
- LiftMaster
- Chamberlain
- FAAC
- HySecurity
- DoorKing
- CellGate
- DoorBird
- Linear
- Viking
- Byan
- KnoxBox
Recent gate work
“We have owned 5 gate Systems over the last 40 years and done business with a host of product and service providers but Trinity Gates are head and shoulders above the rest. The technicians are extremely polite and professional and their product and service knowledge is truly impressive.”
“Very knowledgeable and friendly service for a gate that suffered a rodent intrusion. Broad range of knowledge concerning all the gate mechanism (Liftmaster) and all the related add-ons - vehicle triggered auto-open, keypad, buried detection loops, photo cells, Click2. Will be using them for a regular maintenance contract.”
“We have an older gate that has very few parts available anymore. Trinity Gate had the discontinued part (in their words, they are hoarders)…”
Based in Enumclaw, working across the Puget Sound
- Auburn
- Bellevue
- Black Diamond
- Bonney Lake
- Bothell
- Buckley
- Enumclaw
- Federal Way
- Issaquah
- Kent
- Kirkland
- Maple Valley
- Mercer Island
- North Bend
- Puyallup
- Redmond
- Renton
- Sammamish
- Seattle
- Shoreline
- Tacoma

Gate questions we get
How often should an automated gate be serviced?
Industrial and commercial gates with heavy traffic: two to three times a year. Residential gates: at least once a year, depending on traffic.
My gate won’t close. What should I check first?
Look for anything blocking the gate’s path, then check that the power is on: outages, a tripped breaker or a damaged power line are among the most common causes. If you can’t find a simple fix, call us for repair.
How long does an automated gate last?
A good-quality gate that was installed correctly can last 15 to 20 years with routine maintenance.
Can you work on a gate another company installed?
Yes. Most of our days are spent servicing gates other companies installed, across a wide range of manufacturers.
Can I upgrade my keypad or call box without replacing the operator?
In many cases, yes. Access control and the operator do different jobs, so a keypad, call box, intercom or credential system can often be upgraded while a serviceable operator stays in place.
Can an old manual gate be automated?
Sometimes. It is treated as a new installation, because it usually needs power at the gate, conduit, controls and UL 325 safety equipment. The gate and posts also need to be sound enough to carry an operator.
Gate down? Call the office.
Talk to a person Mon–Fri 8am–4pm. We work on every major brand, including gates other companies installed.