RealtySync CZ/SK Aggregator

Query all four Czech and Slovak real estate portals in a single run — Sreality.cz, Bezrealitky.cz, Bezrealitky.sk, and iDnes Reality. Get a deduplicated, normalized dataset with a consistent schema across all sources.

What does this Actor do?

This Actor runs all four RealtySync portal scrapers concurrently and merges the results:

1. Fetches listings from each selected portal in parallel
2. Normalizes all results into the same field schema (price, area, GPS, contact, images)
3. Deduplicates by (source, listing_id) so you never get the same listing twice
4. Tags each listing with its source field so you know where it came from

Pick any combination of portals, apply filters per portal (region, location), and get one clean dataset.

Why use the Aggregator?

Running four separate actors and merging the output manually is tedious and error-prone. The Aggregator handles concurrency, normalization, and deduplication in one step. Use it when you need:

• Full Czech market coverage — Sreality + Bezrealitky + iDnes cover ~80%+ of CZ listings
• Cross-border CZ/SK data — add Bezrealitky.sk for Slovak listings
• Price comparison across portals — same property listed at different prices on different portals
• One API call instead of four

How to use the Aggregator

1. Create a free Apify account at apify.com if you don't have one.
2. Open this Actor in the Apify Console and click "Start".
3. Select sources — check which portals to include (all four by default).
4. Set filters — offer type, estate type, and per-portal location filters.
5. Click Run and download the merged dataset from the Output tab.

Input example

{
    "sources": ["SREALITY", "BEZREALITKY_CZ", "IDNES"],
    "offerType": "SALE",
    "estateType": "APARTMENTS",
    "maxResultsPerSource": 50,
    "fetchDetails": true,
    "srealityRegionId": 10,
    "idnesLocationSlug": "praha"
}

Output example

{
    "listing_id": "sreality-2160546636",
    "source": "sreality",
    "title": "Prodej bytu 3+kk 75 m²",
    "property_type": "APARTMENT",
    "transaction_type": "SALE",
    "price_czk": 6500000,
    "currency": "CZK",
    "locality": "Praha 5 - Smíchov",
    "area_m2": 75.0,
    "latitude": 50.0755,
    "longitude": 14.4035,
    "seller_name": "RE/MAX Praha",
    "seller_phone": "+420 123 456 789",
    "seller_is_agency": true,
    "url": "https://www.sreality.cz/detail/prodej/byty/..."
}

Input parameters

Parameter	Type	Default	Description
sources	array	All four	Which portals to include: SREALITY, BEZREALITKY_CZ, BEZREALITKY_SK, IDNES
offerType	enum	SALE	SALE, RENT, ALL
estateType	enum	APARTMENTS	APARTMENTS, HOUSES, LAND, COMMERCIAL, ALL
maxResultsPerSource	integer	100	Max listings per portal (total output = this x active sources)
fetchDetails	boolean	true	Fetch full details (GPS, specs, images) per listing
srealityRegionId	integer	(all)	Sreality region filter (10 = Praha, 20 = Jihomoravsky)
bezrealitkyRegionOsmIds	array	[]	OSM IDs for Bezrealitky ([435514] = Praha). Find at nominatim.openstreetmap.org
idnesLocationSlug	string	(all)	iDnes location slug (praha, brno, etc.)

How much will it cost?

This Actor uses Pay-Per-Event pricing at $0.004 per listing (slightly higher than individual portal scrapers at $0.003 to cover the overhead of concurrent scraping and deduplication).

Volume	Cost
100 listings (from 1 portal)	$0.40
200 listings (50 x 4 portals)	$0.80
1,000 listings	$4.00
5,000 listings	$20.00

You only pay for successfully scraped listings saved to the dataset. Platform costs (compute) are billed separately by Apify based on your plan.

Tips

• Start with 2-3 portals and maxResultsPerSource: 50 to estimate run time and cost.
• Use location filters to avoid fetching nationwide data when you only need one city.
• Combine with Apify Scheduler to build a daily price-tracking pipeline across all portals.
• For a single portal, use the dedicated RealtySync scraper instead — it's slightly cheaper per listing.

Is it legal to scrape these portals?

This Actor extracts publicly available data from public web pages and APIs. Web scraping of publicly accessible information is generally permitted under applicable law. Always review the target site's Terms of Service and applicable regulations (including GDPR for EU data) before use. This Actor does not bypass authentication, paywalls, or CAPTCHAs. Use responsibly and respect rate limits.