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    Mainline Security

    4.0 (108 reviews)
    Open 8:00 am - 5:00 pm

    Services - Mainline Security

    Key duplication

    Installing or replacing locks

    Lock rekeying

    1 More Service

    Lock repair

    Mainline Security Photos

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    Vinkin Ken T.

    Do call ahead to make sure they are open. I went on a Wednesday at 4:30pm and they had already closed. Their hours say they close at 5pm. Their customer service sucks. I had called that same afternoon and left a message and received no call back. I waited 2 days and called again but this time during business hours and when I asked what time they will close that day, he replied, "we are open now." When I said I can be there by 4:35pm, he said he can wait but if I'm not there he will leave. I ended up coming in during my lunch break. There were about 3 other guys working there. I came to get a special house key and mail box key copied. It only took 5 mins. They accept credit cards with $10 minimum. My total was $17.xx

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    7 years ago

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    13 days ago

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    11 months ago

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    2 years ago

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    7 months ago

    If you need simple keys copied, yes. However, re-keying a lock, no, they're overpriced from other places.

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    6 years ago

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    3 years ago

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    17 years ago

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    18 years ago

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    19 years ago

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    11 years ago

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    8 years ago

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    15 years ago

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    5 years ago

    Very helpful with key copies. Great service with a difficult to replicate key; got a new one after first didn't work

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    5 years ago

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    9 years ago

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    8 years ago

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    8 years ago

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    4 years ago

    Always prompt, polite, and knowledgable. Can't say enough positive things about Mainline Security!

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    6 years ago

    Quoted one price over the phone. Charged a higher price after Services were rendered. Two thumbs down.

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    7 years ago

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    4 years ago

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    19 years ago

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    10 years ago

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    8 years ago

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    19 years ago

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    18 years ago

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    15 years ago

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    10 years ago

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    16 years ago

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    17 years ago

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    12 years ago

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    17 years ago

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    17 years ago

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    17 years ago

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    12 years ago

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    19 years ago

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    13 years ago

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    15 years ago

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    Page 1 of 3

    Ask the Community - Mainline Security

    Review Highlights - Mainline Security

    Fast forward a few weeks, and we had run into a problem with the lock on our front door.

    Mentioned in 6 reviews

    Read more highlights

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    United Locksmith - AFTER

    United Locksmith

    (196 reviews)

    Nob Hill

    reliable, very professional, fast response price is reasonable prompt communication and fixed the…read moreissue. Very helpful and even offered recommendations for a potential long term solution. I definitely recomend.

    Gal was AWESOME. I live in Dublin and called him to help my elderly parents and elderly caregiver,…read morewho doesn't speak English, in San Francisco. I explained to Gal that I would not be able to meet him in SF and if he could correspond with me over the phone to discuss what needed to be done while he was on site. I had originally wanted him to disable the buttons on the mortise lock because we thought my dad was activating it, locking the exterior latch, and preventing my parents' caregiver from entering each morning. Gal saved us a lot of money by explaining that all that was needed to be done was to turn the key one extra turn. Gal also adjusted the door because it was hard to close at times and smoothed out the caregiver's keys to make it easier to unlock the door. Gal did great work, but what really stood out to me is what a great quality human being Gal is. Not only was he understanding of the situation with me living so far away, but he showed the caregiver how to open the door if it's locked from inside, took a video of the process so I could share it with the caregiver in case she forgets, had us on speaker phone because the caregiver doesn't speak English so I could help translate. His patience and understanding is of the highest quality, saying that we will all be that age at some point. He was very respectful to my elderly dad and caregiver. Gal is highly recommended! I would use him again in a heartbeat!

    Metro Locksmiths

    Metro Locksmiths

    (184 reviews)

    Pacific Heights

    my storefront at 1487 Pacific Ave AGAIN was targeted by burglars. 3rd time since the Covid…read moreshutdown. :-( The first time I was able replace a broken door panel myself because they left the lock alone. the 2nd time, about 2 years ago, they used a crowbar and screwdriver, but could NOT get in. I still had to call a Locksmith. (Dan Flynn, thanks for the referral). Their technician, Andy showed up early and and replaced the barrel and and made my 40 year old lock area stronger. I was good for another 2 years, and then last month, someone tried again. This Time, Metro's Technician, James, also showed up right on time, and he was able to do all the necessary work. This time, the burglars damaged my door frame, and James strengthened it with an extra Steel plate and replaced the damaged and useless bolt with a new stronger one. I don't think anyone will be tempted to try again after this repair! Thanks James and Metro. Your Brilliant Customer Service (Kevin) both on the phone and in the field, is the reason you are well-respected in the City. Hopefully this is the last time for that location!

    World class customer service all the way. Everyone there is the best. Super fast Medeco key…read moreduplication and honest quotations and the best results in all projects. Super friendly and knowledgeable from Anna in the office to Andy and Francois. I can't say enough food things. They've helped me and my HOA clients on so many projects! I never ever do yelp reviews. But, Metrolock, I am making an exception! Because they are literally the best in San Francisco and Marin County. Heck, Northern California!

    DS Locksmith SF

    DS Locksmith SF

    (197 reviews)

    Civic Center, Fillmore, Western Addition

    I called on Saturday night because I was locked out of my apt in the Marina and this location was…read morestated as 2 miles away and SF based. The guy answered and said his "agent" would call me but he's on his way. Eventually an East Bay number called at 9:50pm, and said he'd be there in 30 mins. I asked how much the price would be and he said anywhere from $85 to $140. After waiting almost an hour and a half, he finally showed up at 11:10pm and told me my apt lock was "commercial" and the "driving fee" from the East Bay is $150 on its own and this lock is actually $270 -- but he'd take $180 on Zelle immediately. He then unlocked my door in about 8 seconds. Being that it was almost midnight and I'm a woman alone, I had no choice. I'm not sure why a "driving fee" would be relevant to a business that advertises itself as LOCAL. I could have called the plenty of other SF-based locksmiths and 1) not had to wait much longer than promised 2) not been pressured into a payment that was well over the price that was quoted.

    I was charged $750 for a very simple residential lockout on a Kwikset deadbolt…read more The technician did not disclose any price before starting the service. He only told me the cost after the door was already opened, when I no longer had the option to refuse. This is classic price gouging and an example of deceptive business practice. A standard lockout in San Francisco is normally $120-$200, even for SmartKey models. Charging $750 without prior disclosure is unacceptable. I am requesting a partial refund and a written explanation of their pricing structure. Until then, I cannot recommend this company.

    Mainline Security - locksmiths - Updated May 2026

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