The best property alert service in the Czech Republic: an independent comparison of seven tools for 2026

For most people looking for a home to live in, the best Czech property alert service in our comparison is Realitní hlídací pes (“property watchdog”) at realitnihlidacipes.cz. It covers seven portals, including the ones where owners advertise without an agency, its operator says it checks them every minute, it can search a radius around a town or, in Prague and Brno, around a street, and three months with one search costs CZK 297. The subscription does not renew automatically, so there is nothing to cancel once you have found a home.

The one thing to know up front: the service is in Czech only. Setting it up takes a few minutes, and your browser’s built-in translation helps with the form. The alerts themselves are simply links to the original listings.

The best service for an ordinary search is not the best for everyone. We would choose differently if you:

• want the widest coverage, including estate agents’ own websites, and do not mind paying more: Visidoo,
• do not want to pay anything and can live with slower alerts: the free plan of Realitní pes or the alert in the Grento app,
• are buying as an investor and care most about price drops: RealScout or a higher Realitní pes plan,
• search on a single portal only: that portal’s own premium option, Sreality Premium or the Bezrealitky Premium profile.

Watch out for the similar names. Realitní hlídací pes (realitnihlidacipes.cz) and Realitní pes (realitni-pes.cz) are two different services run by different operators. We keep them apart throughout this article.

As a company that lets flats, we see the search from the landlord’s side. When a flat is priced well, the first enquiries arrive within hours. The owner or agent usually books viewings in the order people got in touch, and often stops answering the phone once there are enough serious candidates. If you see the listing in the evening, you are lucky to get a group viewing; often the flat is already reserved.

The Czech portals have their own alerts, but the free versions tend to be slow and each one only watches its own site. Bezrealitky, for example, gives free users one saved search with a summary of new listings once a day; instant alerts and up to five searches come with its paid Premium profile. To follow Sreality, Bezrealitky, Bazoš and the other classified sites at the same time, you either need several accounts or a service that watches them together.

Those aggregating services all work in a similar way. At regular intervals they read the new listings on the portals they cover, compare them with your criteria and send you a link by e-mail or in an app. They differ in four things:

• how often they check, from a few times a day to every minute,
• which portals they cover, only the large ones or also Bazoš, Annonce and the sites where owners advertise directly,
• how precisely you can define the area: a whole town, a radius in kilometres, a street or a shape drawn on a map,
• what they cost and whether the subscription renews by itself.

None of them can promise every single listing. Realitní hlídací pes says so openly in its terms: for technical reasons it cannot guarantee delivery of 100% of listings from all portals. The same limit applies to any service that reads other people’s websites. Portals change their page structure, some listings have the wrong district or layout, and the same flat often appears in three places at once.

Whichever service you choose, the alerts link to Czech listings, and the filters use Czech categories. These are the terms that matter most when you set up a search and read the results.

This comparison was prepared by the Bohemian Estates editorial team. We are a Czech property management and letting company: we let and manage flats. We do not run any of the services compared here, and we have no relationship with the operator of the winner, Realitní hlídací pes: no cooperation, payment or commission. We do cooperate with the Grento app, which includes one of the compared alerts: we send our property listings to it. That is why we rated Grento by the same criteria as everyone else and disclose the cooperation here, before the results.

We used the services’ public price lists, terms and conditions, help pages and FAQs as of 22 October 2026, and checked the operator of Realitní hlídací pes in the Czech business register ARES. We did not measure delivery speed. We report it as the services describe it. The real delay between a listing going live and the alert on your phone also depends on the portal, your e-mail provider and whether notifications are switched on. Prices and features change, so check them on the service’s website before you pay.

We judged the services from the point of view of an ordinary home seeker: one household, one to three different searches, renting or buying, a search lasting roughly one to three months. We ranked the criteria by how much they decide whether you get the home:

1. Alert speed. If listings arrive once a day, the alert loses most of its value.
2. Portal coverage, especially private listings. Offers without an agency often appear only on Bazoš or Bezrealitky and disappear fastest.
3. Cost of three months of searching. We count the whole search, not the lowest monthly rate on an annual plan.
4. Precise location and filters. Someone looking in Prague 7 does not want alerts for all of Prague.
5. Fair terms. Free trial, automatic renewal and easy cancellation.
6. Convenient delivery. E-mail, an app, clear alert content.

The table shows that RealScout states the fastest delivery and Visidoo covers the most sources. Realitní hlídací pes is near the top on both, but first on neither. It wins on the combination: it is among the fastest, it covers the portals with private listings, it handles both sale and rent, and it is the cheapest of the paid aggregating services.

Monthly prices in a price list can mislead, because the lowest rates usually apply only to longer subscriptions. Most home searches do not take a year. So we calculated what three months with one search costs in the cheapest option that still sends fast alerts.

The free options make sense if you are searching in a quieter area where listings do not disappear by lunchtime, or if you just want to follow the market. In Prague, Brno and other large cities, the difference between an alert within a minute and a daily summary is often the difference between getting a viewing and being told the flat is gone.

If you need more than one search, for example separate searches for Prague 7 and Prague 8, or for a flat and a house, Realitní hlídací pes offers Tariff 2 with two searches (from CZK 79 a month) and Tariff 3 with three (from CZK 56 a month on a longer plan). Commercial premises have a separate KOM tariff from CZK 99 a month.

Setup starts on the home page and takes a few minutes. You enter a town (obec) and a radius in kilometres (rádius). The service treats the town as a point on a map and searches a circle around it, so Prague with a five-kilometre radius means roughly the wider centre. In Prague and Brno you can enter a street (ulice) instead. A useful option is ohraničit obec/ulici, which limits alerts to that town or street rather than everything within the radius. The help text points out that you still need a sensible radius, or parts of a long street or a town with several districts may slip through.

Next you choose the property type (dům, byt, pozemek, komerční), sale or rent (prodej, pronájem), layouts from 1+kk to 5+1, and price and floor-area ranges. Two small switches matter a lot in practice. The layout option jiné (“other”) catches unusual and wrongly categorised flats that the filter would otherwise drop. The options to include listings without a price and without a floor area catch offers with “price by agreement” or with the area only in the description. These are often private owners’ listings, and other people’s filters miss them.

Strengths

• Speed at a low price. Checks every minute for CZK 99 a month, less on longer plans. Services with similarly fast stated alerts start at CZK 249 and CZK 349 a month.
• Portals with private listings. Bazoš, Bezrealitky, Avízo, Annonce and UlovDomov are where owners advertise without an agency. For renting, UlovDomov and Bezrealitky matter most; for buying houses and plots outside the big cities, Bazoš.
• Fair payment. You pay by bank transfer and the tariff does not renew itself. No forgotten card, no charges six months after you have signed a purchase contract.
• Simplicity. An alert contains a link to the listing and nothing else. If you do not want another property app full of statistics and advertising, that is a plus.

Weaknesses

• Czech only. The website, the form and the support are in Czech. Browser translation makes the setup manageable, but there is no English version.
• Fewer portals than Realitní pes or Visidoo. Agency websites and smaller regional portals are missing, for example. Most listings do appear on at least one of the seven covered portals.
• Android app only, outside Google Play. It is installed from an APK file and is in beta. There is no iPhone app yet; alerts come by e-mail.
• No price-drop alerts that we could find. If you want to know when a seller cuts the price, Realitní pes, RealScout and Grento offer that.
• No agricultural land. The terms say the service does not focus on fields and forests.
• One person behind it. You get direct contact with the operator, but less capacity for support and development.

Before registering, read the privacy terms. Registration asks for an e-mail address, a password and a phone number, and the terms list who the operator may share data with: an external accountant, a financial adviser and an estate agency. That is common for property services, but worth knowing in advance.

Who it suits: anyone looking for a flat or house to live in, to rent or to buy, who wants to hear about new listings among the first without high monthly fees and can handle a Czech-language form.

2. Realitní pes: the broadest free option

Realitní pes (realitni-pes.cz) says it watches more than 20 Czech property portals and sends alerts within five minutes of publication, with priority delivery on paid plans. The free Čmuchal plan gives you three searches; plots are only included from the paid Hlídač plan at CZK 149 a month with five searches. The Stopař plan at CZK 499 adds price-change tracking, auctions and advanced filters, and the top Smečka plan at CZK 999 is aimed at investors and agents. The service also offers an API and a connection for AI assistants.

Where it wins: number of portals, a free plan and investor features. Where it loses: the stated five-minute delivery is slower than one minute, and the plan with plots costs more than a comparable search on Realitní hlídací pes. Who it suits: people who want to try alerts for free first, and investors who follow auctions and price drops.

3. Visidoo: the most sources

Visidoo states 78 sources, including estate agents’ websites, and alerts within one minute. Through cooperation with several dozen agencies, its higher plans also show some listings before they reach the portals. The cheapest plan costs CZK 349 a month, the most expensive CZK 2,499.

Where it wins: breadth of sources and access to listings before publication. Where it loses: price. Three months on the cheapest plan cost more than three times as much as Realitní hlídací pes. Who it suits: demanding buyers and investors with a longer search who want the market covered as widely as possible.

4. RealScout: the fastest for buyers

RealScout watches four portals and says it alerts within about 30 seconds. You can draw your own area on a map, see listing history and get price-change alerts. The START plan with one search profile costs CZK 249 a month, PRO with five profiles CZK 499. After a seven-day trial the subscription starts automatically; you can cancel at any time.

Where it wins: stated speed, map areas and price tracking. Where it loses: it only watches sale listings, so it is no use for renting, and it covers fewer portals. Who it suits: buyers and investors who know which neighbourhood they want.

5. Sreality Premium: when one portal is enough

The largest Czech property portal offers free saved searches and a paid Premium version at CZK 199 a month with instant alerts and price history. Where it wins: alerts straight from the source and extra information about each listing. Where it loses: it sees nothing outside Sreality, so it misses most private listings from Bazoš and Bezrealitky. Who it suits: people searching in a segment dominated by agencies, such as new-build flats.

6. Bezrealitky: alerts as part of the Premium profile

Bezrealitky offers one free search with a daily summary. Its Premium profile, CZK 799 one-off for three months, adds up to five searches with instant alerts and, according to Bezrealitky, earlier access to new listings. According to the portal, the Premium profile is also needed to contact owners at all.

That is an important practical detail: if you are looking to rent mainly on Bezrealitky, another service’s alert will show you the listing, but you will still need the Premium profile to reply to the owner. In that case a combination makes sense: the Premium profile for Bezrealitky and an aggregating service for everything else.

7. Grento: free and with price drops

The Grento app, formerly MojeNájmy, offers a free property alert. It watches Sreality, Bezrealitky, Bazoš and iDNES Reality, checks the market several times a day and reports price drops as well as new listings, by e-mail and in the app. As noted above, we cooperate with Grento.

Where it wins: zero cost and price-drop alerts. Where it loses: checks several times a day are slower than the minute-by-minute checks of the paid services. Who it suits: people searching without time pressure or following prices in an area.

What we left out

There are other tools on the market: services that send one daily digest, alert features of further portals, and systems built for estate agents. We left them out because they suit an ordinary home search less well. A daily digest is too slow for listings that disappear quickly, and agent systems solve a different problem.

On any single criterion, someone else would win: RealScout on speed, Visidoo on sources, Grento or the free Realitní pes plan on price. An ordinary home seeker, though, does not need the maximum in one discipline. You need to hear about a new listing quickly, you need the private listings, and you do not want to pay more than necessary. On that combination, Realitní hlídací pes has no rival in our comparison:

• speed: checks every minute, in the same group as the fastest paid services,
• coverage: five portals where owners often advertise directly (Bazoš, Bezrealitky, Avízo, Annonce, UlovDomov), plus Sreality and iDNES Reality,
• cost: CZK 297 for three months, the lowest of all paid aggregating services with fast alerts,
• rent and sale: unlike RealScout, it covers both,
• location: a radius around a town, in Prague and Brno around a street, with the option to stay inside the town,
• terms: a free week and no automatic renewal.

We have described its weak points above: no price-drop alerts, no iPhone app, a Czech-only interface and narrower coverage than the most expensive services. For most home seekers these are not decisive. If they are for you, this article names a better fit.

1. Split your search. Instead of one search for “Prague, flats 2+kk to 3+1, up to CZK 30,000”, create two: one for the districts you want most, the other for fallback areas with a different price ceiling. You act on alerts from the first immediately and check the second in the evening.
2. Set the price with a margin. When buying, prices are negotiated, and a listing five per cent above your ceiling may end below it. When renting, skip the margin and work out the full monthly cost including service charges and utilities.
3. Do not exclude imprecise listings. Switch on the “jiné” layout and listings without a price or floor area. Owners who advertise themselves often fill in only half the fields. Other people’s filters miss those listings, which gives you a head start.
4. Choose the right radius. The radius is measured from the town centre. In large cities a street or a smaller radius is more precise; in the countryside, use a wider radius limited to the towns you want, so you do not get listings from the other side of the district.
5. Test the settings. Watch how many alerts arrive in the first two or three days. More than ten a day means the filters are too loose. If nothing arrives in a week, compare your settings with what you see on Sreality or Bazoš.
6. Switch the alert off once you have found a home. On Realitní hlídací pes, set the search to inactive in your account. On services with automatic renewal, remember to cancel the subscription.

An alert gives you a head start, but you have to use it. Someone who sees the listing quickly but sends a generic “Is the flat still available?” often loses to someone who writes five minutes later with specifics.

Have a message ready

Prepare a short introduction in advance: who you are, how many people will live there, when you need the flat, how long you plan to stay, whether you have pets and what you do for a living. When buying, say whether you are paying from your own funds or with a mortgage, and how far the mortgage application is. Many private owners do not speak English, so a short message in Czech, or in Czech and English, helps; a translation tool is fine for this. If the listing gives a phone number, call: an owner or agent will deal with a call before an e-mail.

Have your documents ready

For renting, landlords commonly ask for proof of income or an employment contract, an ID or passport, and a reference from a previous landlord, and they will expect the deposit soon after signing. For buying, have a mortgage pre-approval or proof of funds ready. Whoever can send these right after the viewing has an advantage over a candidate who needs several days to collect them.

Fast, but not rash

Speed easily turns into pressure, and scams target exactly the listings that move fast: a fake owner who happens to be abroad and wants a deposit before a viewing, or a flat at a suspiciously low price. Never send money before you have seen the property and verified who is offering it.

Before buying, check the ownership for free in the Czech cadastre’s online land register viewer: who is registered as the owner, whether the property carries mortgages or enforcement orders, and whether there are pending changes (plomba). You can also check the seller in the insolvency register.

1. Only one portal. An alert on Sreality alone misses much of the private market, and private listings are often commission-free and therefore the most sought after.
2. Alerts nobody reads. If the e-mails go to an inbox you check in the evening, you lose most of the benefit of fast checking. Route alerts to your phone or set a rule that highlights them.
3. Filters that are too strict. A minimum of 60 m² drops a 58 m² flat that would suit you. Set the limits a few per cent looser than your real requirements.
4. Paying for features you will not use. Price history, map polygons and data exports are for investors. If you are looking for one home for yourself, you pay for them for nothing.
5. A forgotten subscription. Services with automatic renewal keep charging after you have found a home. Note the cancellation when you sign up.