Someone Is Renting Your House for a Month. What to Do About the Wi-Fi Before They Move In.

Somebody is about to live in your house for a month, or for the winter, and everything in it is still yours. The Wi-Fi is on your account. The television is signed into your streaming subscriptions. The front door has a keypad with codes in it going back years. The printer is on the network, the thermostat is in your app, and there is a camera in the hall.

This is an extremely common arrangement in Southern California — a furnished seasonal let, a corporate or relocation stay, a house handed to a family member for a few months — and it is almost completely unwritten about. Search for it and you will get two kinds of page, neither of which is yours. One kind is written for a short-stay host and tells you to rotate the Wi-Fi code between guests. The other is written for a landlord with an empty unit and a twelve-month lease, and is really about whether to offer internet as an amenity at all. A month-plus let in a furnished house is neither of those, and a specific handful of things go wrong only at that length.

That is what this is: the handover, from the owner's side, for a stay long enough that the person becomes the household. We are not attorneys and none of this is legal advice — it is the technical half, which is the half we get called about.

Why the length of the stay changes the whole job

A three-night guest brings a phone and a laptop and uses almost nothing. They do not print. They do not pair anything. They will not notice the thermostat schedule and they will not exhaust anything you are billed for. Isolating them from your equipment costs them nothing, because they never needed to reach it.

Somebody staying thirty to a hundred and eighty days is a different animal, and the difference is not that they are less trustworthy. It is that they are actually living there. They will want the television, the printer and the thermostat, because those are the things you advertised. They will accumulate a month of streaming. They will have a package delivered and want the doorbell to work for them rather than for you. They will hit an internet outage — over a season it is not a question of whether — and somebody will have to fix it.

So the standard advice does not just get weaker at this duration. On several points it inverts. The rest of this is the points where it inverts.

Invert the guest network: they are the household now, and you are the guest

The universal instruction is to put visitors on the guest network. For a weekend that is exactly right, and we have written the mechanics of guest networks up at length elsewhere — what the isolation switches actually separate, and why printing and casting are the first two things to break when a wall goes up in the wrong place.

For a month-long tenant that instruction produces a house that does not work. A guest network with client isolation on is designed to stop exactly the local chatter that makes a television appear in the cast menu and a printer appear in the print dialog. Put your tenant behind it and you have not secured anything meaningful — you have broken the amenities and guaranteed yourself a phone call.

The useful move is to turn the question around. Stop asking how to fence the tenant off from the house network, and start asking what of yours is still on it that should not be. For the duration of the let, the tenant is the household: main network, main Wi-Fi, printer, television, thermostat, all of it. What comes off is your side — a network drive or backup disk, a work laptop, the office printer, anything in a locked room, and the cameras discussed below. Physically unplug what you can rather than trusting a setting, put in a cupboard whatever you are keeping, and if there is genuinely something that must stay online at the property, that is what the second network is for.

This is a five-minute inventory and almost nobody does it, because the mental model everybody arrives with is "guest," and a guest is somebody you keep out. A seasonal tenant is somebody you hand the house to, minus your own belongings.

The sticker on the router has two passwords on it, and only one of them is the Wi-Fi

Nearly every router and ISP gateway ships with a label on the underside carrying a network name, a Wi-Fi password, and — separately — an administrator username and password for the settings pages. People hand over the whole sticker, or photograph it and text the photo, because as far as they are concerned it is "the Wi-Fi details."

For three nights this rarely matters. Over three months it can, and not usually through malice. Somebody with a month of evenings and a slow connection will eventually go looking in the router settings, and from the admin page they can change the Wi-Fi password, change the network name, reassign ports, turn off the guest network, or lock you out of your own gateway entirely. Undoing that generally requires the reset pinhole, which requires being in the building — which, if you are the absentee owner, is the one thing you are not.

The fix is not dramatic. Before the handover, sign into the router and change the administrator password to something that is not on the sticker and not the Wi-Fi password. Write it down where you keep the rest of the property paperwork. Then hand over the Wi-Fi network name and Wi-Fi password only, which is all anyone needs to get a laptop online.

One useful piece of leverage if you are on an ISP-supplied gateway: on several providers the phone app that manages the gateway is tied to your account login rather than to the box's admin password, so you keep a way in even if something changes at the property. Check whether yours behaves that way before you rely on it, not after.

The television is signed in as you, and Netflix is the one that bites

A smart television left signed into streaming services hands over more than the shows. An account screen typically shows the email address the account is under, and the billing page behind it can show the last four digits of a card, the plan and the renewal date. Profile switching is right there. Anything with a purchase or rental option — a set-top box, a games console, a smart TV's own store — may have one-tap buying enabled with no prompt.

But the specific trap at this duration is Netflix, and it is worth understanding rather than guessing at, because the obvious helpful reaction makes it worse.

Netflix defines a Netflix Household as "a collection of devices connected to the internet at the main place where you watch Netflix." Its help pages say that "you can update your Netflix Household when signed in to Netflix from most TVs connected to your internet," and that "if you want to watch Netflix on a device that is connected to a Wi-Fi network using a different ISP account or that has a different external IP address, you may be asked to verify that device as part of your Netflix Household."

Now run that through a seasonal let. Your tenant turns the television on and gets stopped, because the television is now sitting behind a different internet connection from the one your household is set to. They text you a photo of the screen. You, being helpful and two hundred miles away, walk them through it and pass along the verification code that arrives on your phone — and what you have just done is not "let them watch." Depending on which option was taken on screen, it can be the step that moves your Netflix Household to your rental property. Netflix's own guidance is to "update your Netflix Household from a device that is connected to your preferred or most used internet connection," which is precisely the advice you have just acted against. The people this catches are the accommodating ones.

There are two clean ways out and both are better than improvising at the moment the text arrives. The first, and our recommendation, is to sign the television out of your accounts entirely before the handover and let the tenant sign into their own — they almost certainly have subscriptions, and this ends the whole category of problem including the billing screen and the one-tap purchases. The second, if you have genuinely agreed to include streaming, is to know that Netflix documents a travel path: "choose the I'm Traveling or Watch Temporarily button" and "follow the steps to get a one-time code so we can confirm it's you." That is a different button from the one that updates your household, and the difference is the whole point.

Do the same sign-out sweep on the other services while you are in front of the television, and do not forget the ones that are easy to miss: the store account on the TV itself, a games console signed into a library, and anything with a saved payment method.

Your data plan is measured by the month. So is their stay.

This one is pure arithmetic and it is invisible until the bill arrives. A weekend guest cannot meaningfully move a monthly data allowance. A household streaming in 4K every evening for thirty days absolutely can, and the account is in your name.

Whether it matters depends entirely on who your provider is, and in Southern California that splits geographically. Cox — the dominant cable provider in San Diego County, in North County around Oceanside, and in pockets of south Orange County — states on its own data-usage page that "all Cox Internet plans include 1.25 TB (1280 GB) per month of data usage," that "for data usage in excess of plan, 50 GB blocks of data will be automatically added for $10 each (max overage charge of $100 per month)," and that "unused data does not roll over." It also says that "if it's your first time exceeding your data limit, we'll apply a one-time courtesy credit to cover any overage charges for that billing cycle."

Read that courtesy clause carefully, because it is the part that stings. It is a one-time credit — so the tenant who overruns it costs you nothing, and the next one costs you real money. An owner who lets a property for several seasons will meet this eventually and will have no idea why the bill changed.

Spectrum, which is the cable provider across most of Los Angeles County, the Inland Empire and the Coachella Valley resort cities, publishes the opposite position: its own pages state that it does not impose data caps on home internet plans. If that is your provider, this section does not apply to you and you can stop worrying about it.

One thing to keep straight, because it changed in 2026 and the two halves are easy to run together: Cox and Spectrum are now the same company — Charter completed its purchase of Cox on August 20, 2026 — but that did not convert anybody's plan. Cox's own site still publishes the 1.25 TB allowance, so the paragraph above still applies to a legacy Cox plan even though the name on the bill has changed. What decides this is the plan you are actually on, not the brand.

If you are on Cox and letting the place for a season, there are two sane options. Add one of Cox's additional data plans for the months the tenant is there and take it off afterwards, treating it as a cost of the let. Or leave it alone but turn on the usage notifications so you find out in week three rather than on the invoice. What is not sane is asking a paying tenant to ration their streaming.

Door codes need an end date, and app access is a separate thing from the code

A keypad lock in a house that gets let repeatedly accumulates codes: the cleaner, the pool service, a contractor from two years ago, the last three tenants, and one nobody can identify. Before a new arrival, the job is to read the list, delete everything you cannot account for, and issue a fresh code for this stay.

If the lock supports scheduling, use it. Schlage documents code scheduling in its Home app for the Arrive, Encode Series and Sense locks, with three options: "Always," which it describes as a code that "will work continuously until removed"; "Recurring," to "schedule specific days and times for the code to be active," which is the right shape for a weekly cleaner; and "Temporary," to "set a specific period for the code to be active." A tenancy with a known start and end date is exactly what the third one is for. Check the behaviour on your own model rather than assuming — brands differ on this, and so do models within a brand.

The part people get wrong is that a keypad code and app access are two separate grants. If you also added the tenant to the lock's app so they could let a delivery in, removing the code at the end does not remove that, and vice versa. Whatever you granted, write it down at the start of the tenancy, because in four months you will not remember. The same applies to any other shared app on the property — a garage door opener, an alarm, a video doorbell, a thermostat.

While you are in the lock app, check the batteries and hand over the fact that they exist. A lock that dies in week six with a tenant on the other side of the door is a locksmith call and an unhappy conversation about who pays for it.

Indoor cameras come down. Outdoor ones get disclosed.

This is short and there is not much nuance in it. Cameras inside a dwelling somebody is living in should be off, and off in a way you can point at — unplugged, or physically removed, not merely "disabled in the app." That includes the ones people forget because they do not think of them as cameras: a display speaker with a lens, a baby monitor, a webcam on a desktop in the study, a robot vacuum with a camera on it.

Outdoor cameras and video doorbells are a different question and are generally reasonable to keep running for the property's security, but tell the tenant they are there, in writing, before they arrive, and say what they cover. It is a courtesy, it prevents an argument, and it saves you the discovery three weeks in.

There is also a practical annoyance worth heading off. A doorbell camera that still notifies your phone will notify you about their visitors, their deliveries and their comings and goings for the entire stay, which is both tedious for you and not really your business. Turn the motion notifications off on your phone for the duration and leave the recording on if you want the record.

The things that are still signed in as you

Beyond the television, walk the house looking for anything that authenticates as you. The printer is the most common: a multifunction unit set up to scan to email is holding a mail account and password in its settings, and scan-to-folder is pointed at a share that may be yours. The simplest handover is to leave printing working and turn the scan-to-destination features off until you are back.

Then the rest of the sweep. A desktop or laptop left in the house should be signed out or, better, put away. Any shared computer should have the browser signed out of your accounts and its saved passwords dealt with, not left on a profile called "Office." A smart speaker linked to your voice, calendar and shopping list should be reset or removed — a speaker that will read your calendar aloud to whoever is standing in the kitchen is a genuine privacy problem, and it is one nobody thinks of. And anything with a stored payment method — a console, a tablet on the wall, the TV store — is either signed out or gone.

The rule of thumb we use on site: if a device would let a stranger buy something, read something, or unlock something in your name, it either leaves the house or gets signed out. Everything else can stay.

Who calls the internet company at 11pm — and why the obvious fix deserves a think

Over a stay of a month or more the connection will drop at least once, and the tenant cannot do much about it, because the account is not theirs. Providers will not discuss an account with somebody who is not on it. So the outage escalates to you, wherever you are, and you end up on hold on their behalf.

The instinctive fix is to add the tenant to the account as an authorised user. Think about that one before doing it. On the major providers that role is defined broadly — it is a person permitted to act on the account holder's behalf, which on published descriptions extends to things like changing service and scheduling work, not merely reporting a fault. Read what the role can actually do on your provider, in their own documentation, before you grant it, and check whether there is a lesser sub-user or view-only role that covers reporting an outage without the rest.

Our usual advice for a single-season let is simply to stay the point of contact and make that easy rather than heroic. Leave a card on the fridge with the provider's name, the account holder's name, the service address and the support number, plus one line telling the tenant to try a power cycle first and then text you. You will get the occasional call and it will take five minutes, which is cheaper than handing over the ability to change your service.

For a property that is let continuously, it is worth asking the provider directly what options exist for a managed or property account, because the answer varies and it is not always the one on the website.

Put the router where they can reach it

This is the smallest item on the list and it prevents more calls than anything else here.

Owners like to tidy the networking gear away — into a locked utility cupboard, into the garage, into the owner's closet that stays locked for the duration. It looks neat and it is the single most expensive decision in this article, because it converts every ordinary five-second internet blip into a phone call to you and possibly a call-out. A power cycle fixes a large fraction of home internet faults and requires nothing but the ability to reach a plug.

So leave the modem, router and any mesh node somewhere the tenant can physically get to, and leave a note taped nearby with the order to do it in: modem off, wait, modem on, wait for its lights to settle, then the router. If the gear genuinely must live in a locked space for another reason, put a switched outlet or a smart plug on it that the tenant can operate, or accept that you have signed up for the calls.

While you are there: label the cables, and label which box is which. The tenant standing in front of two identical black boxes at eleven at night is not going to guess correctly.

What to do when you get the house back

The handover has a second half and it is the one that gets skipped, because by then the tenancy is over and everybody has moved on.

Change the Wi-Fi password. This is the single most effective item, because it invalidates every device that was ever joined — theirs, their visitors', the ones you never knew about — in one action. Expect to re-enter it on your own gear afterwards, which is the mild cost of doing it, and be aware that anything smart-home is going to need re-joining. Then change the door codes and remove any app access you granted, using the note you wrote at the start.

Then walk the network. Open the router or mesh app and look at the connected-devices list for anything you do not recognise, which after a tenancy is a genuinely useful exercise rather than a paranoid one. Check whether anything got changed while you were away — a guest network turned off, a device-pause schedule set up for their household, a DNS setting altered, port forwarding added. Sign back into the television. And on Netflix specifically, if anything was verified during the stay, go and set your household from a television on your own connection.

Finally, check what the empty house did to the equipment, particularly out in the desert cities. A house shut up through the summer with the air conditioning set high is hard on a router, a modem and any external drive left running, and gear that has been cooking quietly for three months has a habit of failing in the first week somebody is back in the building.

The Southern California version

The seasonal shape of this is specific here. Across the Coachella Valley the winter season runs roughly November to April, which means the handovers cluster in the autumn as people arrive and again in the spring as they leave — so the time to do the work in this article is now, before the arrival, rather than in the week the tenant lands. Along the coast and inland the same pattern shows up as corporate and relocation lets, which are less seasonal but land on exactly the same problems.

Rancho Mirage is worth naming as the edge case, because it changed the character of the market there: the city prohibits short-term rental activity citywide, with its own code defining a short-term rental as a stay of twenty-seven consecutive days or less. The practical consequence for an owner is that the only lawful let is the long one — which is to say, the exact scenario this article is about, with none of the three-night-guest advice applying at all.

And the provider split decides whether the data section above matters to you: Cox territory across San Diego County and North County means a metered month, while Spectrum across most of Los Angeles County, the Inland Empire and the desert resort cities does not. If you are not certain which you are on, the bill will tell you in one line.

The handover, on one page

Before they arrive: change the router administrator password off the sticker; take your own equipment, drives and work machines off the network and out of the house; sign the television and any console out of your accounts and clear saved payment methods; turn off scan-to-email and scan-to-folder on the printer; delete every door code you cannot account for and issue one for this stay, with an end date if the lock supports it; unplug indoor cameras; disclose outdoor cameras in writing; remove or reset any smart speaker tied to your accounts; check your data allowance if you are on a metered provider; and move the networking gear somewhere they can physically reach it.

Hand over: the Wi-Fi network name and Wi-Fi password only — never the admin credentials; the power-cycle order on a note by the router; the door code; a card with the internet provider, the account name and the support number; and one line telling them to text you before they call anyone.

When they leave: change the Wi-Fi password, change the door codes, revoke app access, review the connected-device list and any settings that changed, sign back into your accounts, reset your Netflix household from a television on your own connection, and check the gear that sat in an empty house through the heat.

How we can help

This is a job we do, and it is usually one visit. We will set the network up so the tenant gets a house that works and you keep what should stay yours, change the credentials that need changing, sweep the house for devices still signed in as you, get the lock codes and app access into a state you can actually audit, and leave you a one-page handover sheet and a written list of what to undo at the end. For owners who let repeatedly we will set it up so the turnaround is a fifteen-minute job rather than a rediscovery every season.

We cover the Coachella Valley, Orange County, the San Gabriel Valley, the Inland Empire, San Diego County and the Los Angeles area, and we are happy to do the end-of-tenancy reset as a separate short visit. We do not manage properties and we do not do locksmithing — we do the network, the smart-home configuration and the accounts.

Bottom line

A stay of a month or more is not a long weekend and it is not a lease. Treat the tenant as the household rather than as a guest, and the job becomes obvious: give them the house working, and take your own things off it first.

The five that only bite at this length are worth committing to memory. The administrator password on the sticker. The streaming account that can quietly relocate to the rental if you are helpful at the wrong moment. The monthly data allowance with your name on it. The door code with no end date. And the router in a cupboard they cannot reach. Everything else on the list is tidy-up; those five are the ones that cost money or cost you a season's worth of phone calls.