Mark Loewenberg PA 561-214-0370: To Basic Lockbox or REALTOR Lockbox that is the question?

To Basic Lockbox or REALTOR Lockbox that is the question?

So often I pull up showing instructions and see the following: 

  • the code is R A D (initials of the listing company), my assumption is so that it is easy for their agents to remember
  • 1 2 3 4 (uh yes this is a well used one)
  • 2 4 6 8  (same as above, unbelievable? )
  • the house number (gee how long will it take me to try 1234, 4321, 2468, 8642 and then the house number?)
  • four corners of the lock box clockwise, yes or sometimes counterclockwise too
If you were a seller and actually knew that any of these were the "secret code" that protected not only your investment, but your valuables inside, would you feel comfortable? Sorry this is SO rhetorical as we all know the answer.  Oh and let's just guess at other folks that may just happen by and guess their way in as well, then you may find either a trashed property or remnants of a weekend get together!

SupraHere in South Florida we use the SUPRA system and when I go on a listing appointment, I show the seller not only the electronic lock box, but also our electronic wireless key that opens the SUPRA. I educate them that once opened by only authorized persons, the SUPRA key automatically sends the data from that entry to SUPRA servers that immediately puts the information of who showed the property, what company, when they showed it too on the internet for instant access.

My sellers love this system and even though it is possible to save about 70-80% by purchasing a cheap lock system, I know that the extra expense I go through is well appreciated by my client sellers.

What are your thoughts on the SUPRA system?

Mark Loewenberg PA


Broker Associate
Keller Williams REALTOR®

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Mark Loewenberg






Comment balloon 23 commentsMark Loewenberg • July 10 2012 07:54PM


Mark: I love that system for my clients. Unfortunately lots of agents have their own boxes. These are usually on REO's (of which we have many in Del Norte County).  It could be that our association doesn't have many supras, they send out a plea every now and again for agents to return those they are not using.

Posted by Hella Mitschke Rothwell, Hawaii & California Real Estate Broker ((831) 626-4000) about 8 years ago

This is too funny, what's your point. Will a supra lockbox stop a break in. I don't care what one uses as long as I can easily get it and show the house.

Posted by Charles Stallions Real Estate Services, Buyers Agent 800-309-3414 Pace and Gulf Breeze,Fl. (Charles Stallions Real Estate Services Inc) about 8 years ago
SUPRA is a great system for the reasons that you've listed. I see them on many homes in our area but the "traditional" boxes are still making a strong presence as well.
Posted by Mark Delgado, Benicia and Vallejo, Property Management, rental h (houses for rent, Solano County & Glen Cove) about 8 years ago

Hi Mark, I definitely want a supra on my house, its good to know who is stopping by and when.

We bought a REO a few months ago that did have the address as the code, seems the agent could have come up with something a little more random, but it did make it a little easier for me and my agent.

Posted by Bob Crane, Forestland Experts! 715-204-9671 (Woodland Management Service / Woodland Real Estate, Keller Williams Fox Cities) about 8 years ago

plus those buyers too, when they show up unannounced they may try a few codes and bingo they are in... and if they like the property..well let's just say that the next person/agent that tries to show it may be facing an empty lockbox!

Posted by Mark Loewenberg, KW 561-214-0370 (KW of the Palm Beaches) about 8 years ago

We use the electronic lockboxes here in Maryland, a much safer way to practice Real Estate.


Posted by Margaret Rome Baltimore 410-530-2400, Sell Your Home With Margaret Rome ( HomeRome Realty 410-530-2400) about 8 years ago

We don't have lockboxes here in Manhattan, but I can see the advantages of the SUPRA system, a much higher level of security and reporting that would make any seller feel more comfortable than a regular lockbox.

Posted by Eileen Hsu, LICENSED REAL ESTATE SALESPERSON (Douglas Elliman Real Estate) about 8 years ago

Mark, there a a lot of pluses and benefits to using the electronic key boxes.

Posted by Michael Setunsky, Your Commercial Real Estate Link to Northern VA about 8 years ago

I like Supra but in Northern Virginia we use SentriLock.... Either way, I believe the family living in the home is safer with an Electronic Box. It is also a good selling point when trying to secure a listing.

Posted by David Burrows, No Pressure, Just Seriously Devoted to Real Estate (Classic Realty) about 8 years ago

Here in Las Vegas if you use a mechanical lockbox you have to get a seperate permission form filled out by the owner for our Association...and besides with the Ebox you know who and when someone showed your home and you can send a feedback request...You can even get discounted (used) boxes here

Posted by Jacob Mitro, I can help you buy, sell, and manage your home. (LIFE Realty District) about 8 years ago

Mark, very (sadly) funny post, in Denver the electronic lock box has not caught on, maybe 1 in 50 agents use them.

However, Last week I was showing a home to a family with two young rambunctious boys, we stepped out onto the porch after the showing and the sky opened up, a much needed downpour. So we decided to enjoy the rain from the porch, after  a few minutes the boys got bored so I suggested they try to "unlock" the lock box, figuring it would keep them busy for 10-15 minutes about the length of a rainstorm in Denver, they had it open in less than 30 seconds. This was an alpha combo lock with no rhyme or reason to the combo, but these two little boys figured it out. I put it back on and asked them to try again and thankfully they could not.

Might have to get me one of those electronic lock boxes for my listings.

Posted by John Marshall - FORE!, Specializing in Golf Course Properties (LoKation Real Estate) about 8 years ago

We have been on Supra since I began my career in 1999, so it's very rare that a combo lockbox will be on the door.  Mostly combos are used on REO properties.  I love them, personally.  

Posted by Carla Muss-Jacobs, RETIRED (RETIRED / State License is Inactive) about 8 years ago

Mark- congrats on the Feature. I'm  surprised that all Realtors don't use the electronic boxes. 

Posted by Kathy Streib, Home Stager - Palm Beach County,FL -561-914-6224 (Room Service Home Staging) about 8 years ago

I only use the Sentrilock electronic keyboxes.   It's a fantastic system.  

Posted by Linda Metallo DiBenardo (RE/MAX Impact, Lockport, Illinois) about 8 years ago

I tried to use them, but we are so rural and the other agents didn't have the supra keys, so I had to put BOTH lockboxes so I didn't have to go let them in every time. I sure wish they would catch on. They are wonderful!

Posted by Joni Bailey, Your Huntsville / Lake Livingston Area REALTOR® (101 Main St. Realty) about 8 years ago

great thought on using both lockboxes, BUT still a risk to the seller.  sometimes out of area realtors come into our "hood" and do not have the tools which does make it tough as well, but if they have a great prospect, I just meet them and help them out!

John tells the story well! you never know who may be able to crack the code!

sounds like a lot of folks do have the benefit of great electronic systems  and kudos to those that use them for their seller's sake too!

great comments rainers!

Posted by Mark Loewenberg, KW 561-214-0370 (KW of the Palm Beaches) about 8 years ago


We use the supra lockboxes and I have an ekey.  I do not like combo boxes.  They are too easy to break into and they don't look as professional as the supra lockboxes.

Posted by Evelyn Kennedy, Alameda, Real Estate, Alameda, CA (Alain Pinel Realtors) about 8 years ago

I use the Supra EKey and love it.  Its on my phone and some of my clients think I'm so techie.  I don't like combo boxes because they're often a pain to open (or they open too easily as you mentioned).  The biggest reason I don't like them is broken nails LOL

Posted by Iris Stuart (none) about 8 years ago

Mark - I like the fact that we can see who has been in the house with the Supra.  It makes sense.

Posted by Christine Donovan, Broker/Attorney 714-319-9751 DRE01267479 - Costa M (Donovan Blatt Realty) about 8 years ago

yes Christine, the ultimate win win for our clients is letting them know who and when folks are in the home...

Posted by Mark Loewenberg, KW 561-214-0370 (KW of the Palm Beaches) about 8 years ago

Hi Mark, also with the combo lockboxes some agents when you call to request code, don't really check to see if your an active agent - they just give it out. 

Posted by Eva Aliaga, Boca Raton & Delray Beach: SE Florida Real Estate (Partnership Realty Inc) about 8 years ago

yes, could be the neighbor down the street that wants to "check it out" or maybe they have a friend coming in town that needs a cheap "motel" room to live in for the weekend!

Posted by Mark Loewenberg, KW 561-214-0370 (KW of the Palm Beaches) about 8 years ago

Mark, I use the Supra lockboxes so that I get an email as soon as another agent enters one of my listings.  I think that it's much more controllable than other 3 to 4 letter combo locks.

Posted by Carol Faaland-Kronmaier, PhD, e-PRO, Manville, Hillsborough, Somerset NJ (Weichert, Realtors; Hillsborough) about 8 years ago