If you lost the key to your mailbox, moved to a new house, condo, or apartment, and you are the owner or legal tenant, you can rekey or change the lock and the key. The cost to remove and install new post in cement would be $140 which would include assembly and attachment of new mailboxes. Tips for Postal Customers with Centralized Mailboxes. Buy Replacement Locks factory direct from mailboxes.com. We've got some helpful tips - including what to do if you need a new lock for your mailbox. The price of a replacement key can vary by community, costing a renter on average between $100 and $400. A residential mailbox costs $12-$900. How do I replace my lost Mailbox key. $100.00. Salsbury Industries offers replacement locks and key blanks for commercial mail boxes. ... Universal Locks for 4B+ Horizontal and Vertical Style Mailbox Door with 2 Keys Per Lock - 5 Pack Model # 1190-5. A locking mailbox protects against mail theft. Features a die-cast cylinder with a nickel plated face. The letter carrier doesn't have a key to your individual box. If you wanted a custom post designed from cedar wood that would support 2 mailboxes you would ad $80 to estimate. If you had a key lost, stolen, or damaged, you might have to pay to replace it per your lease. Many Postal Service™ customers have centrally located, or cluster, mailboxes that all residents of their apartment, townhouse, condominium, or housing complex use.Using these handy tips and tags will help the Postal Service to provide you with accurate and uninterrupted mail delivery service. Satin nickel 5-Cam threaded mailbox lock. Mailbox Lock, 5 Cam, Nickle Finish, National Keyway, Opens Counter-Clockwise, 90 Degree Rotation Satin nickel 5-Cam threaded mailbox lock. When I delivered mail for the USPS, I would try to remove the old one, for a customer that had lost their key, in order to save them $30-$50, I had to replace mailbox keys for three clients. If your box is in a cluster, he has a key that opens up the entire column of boxes at once. Mailboxes are sold at hardware and home improvement stores such as Home Depot, Lowe's, Sears and Ace Hardware. Mailbox clusters sometimes belong to the neighborhood association and sometimes belong to the post office. If you’re looking for locking mailboxes, residential options, such as locking wall-mount mailboxes, are available. ... or at a locksmith shop. The lock itself, can be purchased at any hardware store for about $5, but you need a locksmith to get the old one out. It makes an effective replacement for locks from many manufacturers. Average costs and comments from CostHelper's team of professional journalists and community of users. How much does it cost to replace a mailbox lock? You can do whatever you want with it. Most mailbox locks cost $10 or less and are very easy to replace. ... CT. What do you do if there's no mailbox key in your new home? Or, replace your standard mailbox with a more secure mailbox with a locking mailbox insert or look for locks for boxes. How much a residential mailbox should cost. This lock includes an assortment of 5-cams. It costs $23 if it’s a new lock replacement (new resident). The lock attached to your box belongs to you. Look over your lease agreement for the actual amount you might owe for a replacement apartment key.