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    Port Chester Locksmith: King Street and the Byram River

    Larchmont Locksmith NY• August 19, 2026• 6 min read

    Most lock trouble on the residential side of Port Chester comes down to two doors: the shared street door of a multifamily building and the door to your own unit. If you live above a shop on Main Street or in a house toward King Street and the Byram River, start by working out who owns the lock that is giving you trouble. The building owner looks after the shared entry. The unit door belongs to the owner too, but it is the one a tenant uses every day. Larchmont Locksmith NY repairs, replaces and rekeys both, anywhere in the Village of Port Chester, any hour.

    Port Chester's residential side

    Port Chester is a village in the Town of Rye, on the Connecticut line. The Byram River runs along its eastern edge with Greenwich on the far bank, and King Street follows the state line north. Rye Brook, a separate village, borders Port Chester. Neither Rye Brook nor Greenwich is one of the twelve towns we cover, which is worth knowing if you are searching for a Port Chester locksmith near Rye Brook and live on the far side of the line.

    Inside the village, the shops along Main Street and Westchester Avenue get most of the attention, from the Capitol Theatre to the storefronts near the Metro-North station. Our post on storefront doors and roll-down gates in Port Chester covers that side. This one is about the places people live: the apartments above those shops, the multifamily houses on the side streets, and the houses on the residential streets toward King Street.

    Apartments above Main Street shops: the street door

    A building with shops on the ground floor and apartments above usually has one street door for every tenant. That door takes more abuse than any other lock in the building. It opens dozens of times a day, slams in the wind, and gets propped open for deliveries.

    The common problems:

    • The door does not latch. The closer pulls it shut, but the latch misses the strike and the door rests against the frame, unlocked. Often the strike plate has shifted or the hinges have sagged.
    • The key turns hard or not at all. A worn cylinder, a cheap copy of a copy, or grit in the keyway.
    • Nobody knows how many keys exist. Tenants come and go, keys get copied for friends and relatives, and after a few years the street door is not much of a lock.

    All three are the owner's call. A tenant should report a broken street door to the landlord or manager rather than arrange a repair alone, because a new cylinder there means new keys for everyone in the building. If you own the building, rekeying the street door is worth doing whenever a key goes missing or a tenant leaves without returning theirs.

    Apartment doors

    The unit door is usually a knob or lever lock plus a deadbolt. At a turnover, the owner should rekey that door so the new tenant starts with keys nobody else holds. That is cheaper than new locks, and the hardware stays.

    If you are a tenant and want a better deadbolt, or a lock that turns more easily, read your lease first and ask the landlord. Many leases say the landlord must keep a key to every unit, so plan on handing one over. A landlord who agrees will often just arrange the work.

    If the trouble is the mailbox key rather than the door, that is a separate lock with its own owner, often the Post Office. Our guide to mailbox lock replacement explains how to tell who to ask.

    Houses toward King Street and the Connecticut line

    On the residential streets running toward King Street, the buildings are mostly houses, and some of them hold two or three units. Those change the key question.

    • Separate entrances. Each unit may have its own outside door, and there may be a shared door to the basement or the yard. Decide who gets a key to each one, and write it down.
    • One key per tenant. A locksmith can usually key a tenant's unit door and the shared door so one key opens both, while that key opens no other unit. Ask for it when you rekey.
    • Back and basement doors. These are the doors people forget. They are often older, sometimes with a deadbolt that never fully throws, and they face a yard rather than the street.

    For an owner who lives in one unit and rents the others, the same rule applies as anywhere else: rekey at every turnover, and keep a list of who holds what.

    Our residential lock services cover all of this, from fixing a door that will not latch to installing a new deadbolt on a back door that never had a proper one.

    A typical call, and getting there

    A typical call from a Port Chester apartment sounds like this. The street door will not latch or the unit's deadbolt has started to stick, the landlord has said yes, and someone needs it looked at today. Have the address, the unit number and the brand of the lock if you can see it. Say whether you are the owner or a tenant with the landlord's go-ahead.

    Port Chester is the furthest of our Sound Shore towns from Larchmont, where two of our three technicians live. It sits beyond Mamaroneck and beyond the City of Rye, which is itself a short drive up the Sound Shore. Our average response is about 25 minutes, and you can call any hour. Service starts at $125. Ask for the total before work starts.

    If you live in Rye itself, the Rye locksmith page covers the city, and the Port Chester locksmith page has more on the village.

    Frequently asked questions

    Do you cover the King Street side of Port Chester, near Rye Brook?

    Yes, every street inside the Village of Port Chester, including those toward King Street and the Byram River. Rye Brook and Greenwich are separate places outside the twelve towns we cover.

    Can a tenant change the lock on a Port Chester apartment?

    Check your lease and ask the landlord first. Many leases require the landlord to have a key to every unit, so expect to give one over. This is general guidance, not legal advice.

    Who fixes the street door of a building on Main Street?

    The building owner or manager. A new cylinder on a shared door means new keys for every tenant, so it should be planned by whoever runs the building. Tenants should report the problem rather than arrange the repair themselves.

    Can one key open my unit and the building's front door?

    Usually, yes. When the locks are rekeyed, the unit door and the shared door can be set so a tenant's key opens both but no other unit.

    Something wrong with a door between Main Street and the Byram River? Call Larchmont Locksmith NY on (914) 255-6611.

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