Header
x-api-key required
string
This parameter defines the Piloterr private key to use for authentification.
Parameters
query
string
OnTheMarket listing URL or numeric listing ID.
Looking for the full API documentation?
Looking for the full API documentation?
Get Real-Time OnTheMarket Data via API, No Infrastructure Required
OnTheMarket listing pages carry the data agents publish at full depth, including complete address, EPC current and potential ratings, council tax band, lease terms with ground rent and service charge for leasehold flats, full image set, floorplans, and PDF brochure. The OnTheMarket Ad API returns the complete structured property record for any listing URL or numeric ID, in real time. Cloudflare bot protection on onthemarket.com is handled transparently by Piloterr, so you never manage proxies or HTML parsing on your side.
Application Scenarios for the OnTheMarket Ad API
- Enrich a buyer CRM with full listing data: Capture tenure, lease remaining years, EPC rating, council tax band, and the full feature list in a single call the moment a buyer signals interest in a specific OnTheMarket listing.
- Track price reductions on watched listings: Use the `reduced_at` timestamp to detect motivated sellers and alert buyer agents to time offers when the seller has just dropped the asking price.
- Audit competitor listings on the same street: Compare key features, EPC ratings, and price per square foot across rival agency listings without scraping the portal manually.
- Study EPC ratings across UK postcodes: Pull EPC current and potential ratings at scale to study correlations between energy efficiency, council tax band, and asking price across English, Scottish, and Welsh markets.
- Filter London leasehold flats by ongoing cost: Use ground rent and service charge fields to feed an investor dashboard that ranks leasehold flats by total ongoing cost burden, alongside live asking prices from OnTheMarket.
Why Use Piloterr Instead of Building Your Own Scraper
- No anti-bot management: OnTheMarket blocks automated requests with Cloudflare bot protection. Piloterr handles the bypass transparently so you never touch proxies, fingerprinting, or TLS configuration.
- Real-time data: Every call returns live data from OnTheMarket, not a cached snapshot or a stale dataset dump.
- Structured JSON: No HTML parsing, no fragile selectors. The response schema is stable and documented.
- No infrastructure costs: No proxy pool to buy, no headless browser cluster to maintain. Pay only for successful requests.
One Piloterr subscription gives access to the full public API catalog, including real estate, retail, search, and B2B endpoints. See the API documentation for authentication, parameters, and how credits are deducted.
Start Collecting OnTheMarket Data Today
Sign up for a free trial and get 50 free credits with no credit card required. See pricing to find the plan that fits your volume.
2 credits = JS rendering API request
3 credits = WebUnlocker API request
2 credits = JS rendering API request
3 credits = WebUnlocker API request
2 credits = JS rendering API request
3 credits = WebUnlocker API request
2 credits = JS rendering API request
3 credits = WebUnlocker API request
2 credits = JS rendering API request
3 credits = WebUnlocker API request
2 credits = JS rendering API request
3 credits = WebUnlocker API request
2 credits = JS rendering API request
3 credits = WebUnlocker API request
2 credits = JS rendering API request
3 credits = WebUnlocker API request
2 credits = JS rendering API request
3 credits = WebUnlocker API request
2 credits = JS rendering API request
3 credits = WebUnlocker API request
2 credits = JS rendering API request
3 credits = WebUnlocker API request
2 credits = JS rendering API request
3 credits = WebUnlocker API request
2 credits = JS rendering API request
3 credits = WebUnlocker API request
2 credits = JS rendering API request
3 credits = WebUnlocker API request
Get 50 free credits now!
Sign up now and enjoy 50 free API credits + full access to our premium endpoints!
"5* tool, reliable and efficient - works perfectly to collect Google data. Bonus, the support is really responsive."
Corentin Robert
Growth
"They know what they're doing and they know how to provide the best tools to helps startups to grow faster. Their solution is a no-brainer for every tech-marketing team. Plus, the best support I have ever seen in the SaaS industry..."
Polar Analytics
Paul-François, Lead Growth
"With Piloterr, testing an idea has gone from a few days to a few hours 🤯 The apis are super stable, respond quickly, they take care of proxies / infra...and are super responsive and add new APIs regularly based on our needs. It's a dream! Thanks guys!"
La Growth Machine
Brice, CEO
Browse more API endpoints
Frequently asked questions
Everything you need to know about our products & services.
We have implemented industry-standard security measures to ensure the safety of your data. Our platform uses SSL encryption to protect your API requests. We're also fully aligned with GDPR and CCPA compliance standards.
We are always adding new APIs to our platform based on customer demand and emerging technologies. If you have a specific API you would like us to add, please contact our support team and let us know.
Active plans can be upgraded, downgraded and cancelled anytime. Changes are immediate. When changing plan, the remaining unused requests of your current plan are added from your next invoice amount.
We understand that things change. You can cancel your plan at any time and we’ll refund you the difference that you already paid (annual subscriptions only and under the terms described here).
Your monthly subscription restarts with your monthly allowance of successful search credits on the first day of your billing cycle's subscription.
Yes! We are always happy to help users to be able to use our API! You can chat us and we'll try and get back to you within a single business day.
Only successful requests are counted towards your monthly searches. Errored and failed searches are not. For the credit system, please consult our documentation.
Of course! We are always expanding our code and building new APIs for different search engines. You can create a feature request on our Roadmap. We aren't able to build APIs for every websites for a variety of reasons but we do always make additions where they are needed and able to be done.
