Embed a tool that turns anonymous traffic into real sales leads. A ready-made widget with a lead management panel, or direct integration via API.
See sample reports
Many visitors come to an agency website with one question: what is my property worth? The widget answers it right away. The client gets a free valuation report, and you get in touch with someone who is considering a sale or rental.
The client enters basic information about the property they want valued.
The client enters contact details and agrees to be contacted.
The client receives an email with a link to the valuation report and content prepared by you. Next, you contact the client to offer your services.
Five sample reports from the widget, prepared for a demo agency, Agencja Przykładowa. The client gets a link to the report by email right after submitting the form and sees your logo and your text in the report header.
Siedmiogrodzka 1 in Warsaw, same parameters. Standard prices the property from current listings and estimates the transaction price with the NBP ratio. Advanced combines listings with transactions from the Real Estate Price Register (RCN) and explains the result – which is why the two valuations differ.
These property types are valued by AVM Advanced. Each report includes a location description, price rationale, price factors, and comparable transactions and listings.
The panel wizard takes you step by step: domain and consents, valuation model, appearance and copy, email templates and advanced settings. You see the result instantly in the preview.
Rentier.ioConnect the widget to your domain, company name and the address that receives leads.
Two consents of your company linked to your terms and privacy policy, plus a fixed Rentier consent to perform the valuation.
The model determines supported property types, data sources and report detail.
40+ themes, custom colours, logo in the report and email, any Google font.
Headers, buttons, success message, report header and the list of property types.
Separate templates for successful and failed valuations, per property type, with dynamic variables.
Accept valuations only from selected cities, verify phone numbers by SMS code and remove the Rentier logo from the report.
Connect your own GTM container. The widget fires a form-submitted event, so you track conversions in Google Ads, GA4 or Meta Pixel and measure campaign performance.
In the widget you pick the model in the wizard; in the API you choose it by endpoint. Every model values both sale and rent.
Widget Panel is where you configure the widget, review client valuations and manage your team. Only you see data from your domain.
Valuation table filtered by date, domain and email. The leads view groups valuations per client.
Every widget submission lands in your email immediately.
Download valuations to a spreadsheet in one click, e.g. for CRM import.
Anonymise client data with confirmation and a count of linked valuations.
Configuration changes go through approval; every version has a diff preview.
Agent sub-accounts, multiple domains per account, roles and permissions.
The same models as the widget, available via REST API. Send property parameters, get the price, range and accuracy index – and with Advanced models also price factors, location description and comparables.
POST /calculation/v1/avmPOST /calculation/v1/advanced/avmPOST /calculation/v1/advanced/avm/maxX-API-KeyPartner key assigned to your account.Request-IdRequest identifier – keep it when retrying.Idempotency-KeyOptional. A retry with the same key does not create a new valuation.AmountsStrings with two decimals, e.g. "750000.00". Missing price is null, not zero.curl -X POST https://apis.rentier.io/calculation/v1/advanced/avm \
-H "X-API-Key: $RENTIER_API_KEY" \
-H "Request-Id: 7f3c2a10-9b1e" \
-H "Content-Type: application/json" \
-d '{
"estate_type": "flat",
"transaction_type": "sale",
"address": "Kolska 11A, Warszawa",
"coordinates": {
"lat": 52.2388,
"lng": 20.9762
},
"country_code": "PL",
"area": 50,
"rooms": 2,
"bathrooms": 1,
"market": "secondary",
"floor": 3,
"total_floors": 6,
"build_year": 2008,
"building_type": "block",
"standard": "good",
"facilities": {
"balcony_or_terrace": true,
"garage_or_parking": null,
"elevator": true,
"storage_or_basement": false
}
}'200 OKillustrative example{
"meta": { "product": "advanced", "transaction_type": "sale" },
"valuation": {
"listing_price": { "value": "875438.00", "currency": "PLN" },
"transaction_price": { "value": "829000.00", "currency": "PLN" },
"price_range": { "min": "761266.00", "max": "958534.00" },
"confidence_score": 0.91,
"pricing_argumentation": "…",
"location": { "description": "…" },
"rent_breakdown": null
},
"key_factors": [ … ],
"evidence": {
"offers": { "count": 43 },
"transactions": { "count": 12 }
}
}estate_typeaddressareatransaction_typecoordinatescountry_codemarketroomsbathroomsfloortotal_floorsbuild_yearbuilding_typestandardfacilitiesplot_areaYou complete the configuration in the panel wizard. Once approved, you embed the widget on your site as an iframe – just paste one code snippet.
Your clients’ data goes only to you – to your email address and your panel. An agent only sees valuations from their own domain.
AVM Standard is the most affordable option and suits high volumes of apartment valuations. Advanced costs more but also covers houses, plots and commercial units, uses transaction data and gives a fuller report. Advanced Max accepts the widest set of property features, has the highest valuation cost and is currently available via API only.
The widget is a ready-made form with consents, emails and a lead panel. Choose the API when you want to show the valuation in your own interface – a CRM, portal or developer app – or when you want full control over the valuation flow and the form design.
Yes. Connect your own Google Tag Manager container; the widget fires an event when the form is submitted. Use it to set up conversions in Google Ads, GA4 or Meta Pixel.
Yes. In advanced settings you choose the cities the widget accepts submissions from.
You can enable SMS phone verification and choose the allowed countries.
Tell us about your website or system. We will help you pick the valuation model and integration path.