Why we built Knocknock request-first

Real-estate marketplaces have one default shape: a wall of listings, and you scroll. Filter, save, message — but the work is yours. The agent is the gatekeeper of the listing, and you spend your evenings re-explaining yourself.

We thought the geometry was wrong.

The reversal

In Knocknock, the client posts a request — budget, neighborhood, must-haves. Verified agents see the request and reply with concrete options that fit. You do not browse. You do not chase. The signal goes one way: from your brief to the matching offers.

Three constraints make it work:

Agents can only respond to a request. They cannot DM you first.
Each agent's reply must reference a real, available listing.
Your contacts stay private until you choose to chat.

The problem with listings portals

Anyone who has hunted for an apartment on Zillow, Rightmove, Domain, or Bayut knows the ritual: open four tabs, filter by neighborhood and price, save thirty listings, message a dozen agents. The next day you get seven phone calls — always at the wrong moment — from people who did not read what you wrote.

Three things have gotten worse over the last five years:

1. Stale listings. Verified-listing services like QuintoAndar in Brazil or Idealista in Spain solved part of this for their own inventory, but step outside their funnel and half the "available" properties on generic portals were leased weeks ago. You find out on the call.

2. WhatsApp (or text) as the default channel. Almost every agent wants to continue the conversation on whatever messaging app you both use. Result: eight parallel threads, each starting from zero. "Hi, is this Maria?" "Hi, I messaged you yesterday about the Marina apartment." "Which apartment?" You spend more time managing the inbox than seeing properties.

3. Cold calls and pushy DMs. You message a listing at 10pm. At 8:30am the next morning an agent rings. You are in the shower. They call again at 9:15. And at 11. That is the default operating mode — and portal ranking algorithms reward whoever responds fastest, not whoever responds best.

Knocknock does not compete with the search tab on Zillow or Rightmove. We compete with the part where you become hostage to your inbox. The brief is written once, and whoever replies replied because they read it — because you cannot reply without reading.

How a request works in practice

The first time you use Knocknock it takes about four minutes. The flow, in order:

You describe the request. Neighborhood (you can pick several), price range, number of bedrooms, type (rent or buy), what is non-negotiable (balcony, parking, pets allowed) and what is "would be nice" (view, high floor, furnished). No signup needed to write it. No photos to upload — only your brief.
We publish the request to verified agents who work in your neighborhood and your price band. Not all agents — only the ones that make sense. In a typical metro area, that is usually between 20 and 60 active agents per price band per neighborhood.
Agents reply with concrete options. Every reply is tied to a real listing available now — with approximate address, price, photos, and how it scores against each of your requirements. You see who is replying, how long the agent has been in the market, and their rating.
You decide what to open. Each offer has a "view details" and a "hide" button. There will be no phone call. There will be no WhatsApp ping. If an offer interests you, you open the chat — and only then can the agent message you back. Before that, all they can do is send options.
You arrange the viewing inside the platform. Address, date, time — all in the chat. You do not share your number until you want to.

In our soft-launch testing in Brazil, the average number of replies per request landed between 6 and 12 offers per request — depending on how specific the filter was. The first offer typically arrived within hours. These are preliminary numbers from soft-launch — we will update them as the product runs at scale.

Why verified agents respond

The natural question is: why would an agent reply to a request on Knocknock when they can just sit on their listing on Zillow and wait for the phone to ring?

Three reasons:

Economic incentive. A passive listing on a portal competes with 200 other listings in the same price band. The agent pays the subscription, gets cold leads, spends time on the phone qualifying. A request on Knocknock arrives already qualified by the client — neighborhood, budget, requirements, timeline. For the agent it is the difference between firing into the dark and firing at a target someone else already drew.

License verification. Every agent on Knocknock passes license-board verification — CRECI in Brazil, AMI in Portugal, state license in the US, and the equivalent in other markets. No shadow brokers, no informal middlemen, no "friend who knows an owner." For you that means if something goes wrong, there is a registration number and a regulatory body to escalate to.

Visible reputation. Every interaction inside Knocknock feeds the agent's public profile: how many offers they sent that the client opened, how many became viewings, how many became contracts. It is a track record built publicly — unlike WhatsApp threads that vanish at the end of the month.

Is it more work for the agent? Yes. Is it less friction for you? A lot less. We are betting that trade-off pays off for both sides — and the agent side (Knocknock.pro) has been live since 2024 with 1,500+ active brokers, so the bet has data behind it.

What to expect in the first 48 hours

Most requests in our launch markets receive a first offer within hours. But this varies by neighborhood and budget:

High-demand neighborhoods (downtown cores, popular expat areas, hipster districts): first offer typically within 1–4 hours. 48 hours total: between 8 and 20 offers.
High-inventory neighborhoods with steady demand (consolidated residential areas, secondary cities): first offer within 4–12 hours. 48 hours: between 4 and 10 offers.
Extreme price bands (well below or well above the local median): the window widens. First offer might take 12–24 hours.
Very specific requests (pets + 3 parking spots + sea view + furnished): fewer offers, more qualified. It is an intentional trade-off.

During soft-launch in May 2026, the average time-to-first-offer was [X] hours and the average count of offers in 48 hours was [Y]. We'll publish the stabilized average once we have enough volume across all bands.

What is not normal: zero offers in 48 hours. If that happens, three common causes: filter is too specific (loosen one criterion), price band is outside the local market (move it up or down), or the neighborhood has few active agents (rare in capitals). The app flags this and suggests adjustments.

What we are not

We are not a portal. We do not list properties. We do not sell ad slots. We do not hide the agent's identity — you see who is replying, and you choose whom to talk to.

When NOT to use Knocknock

Honest about limits: Knocknock is not the best tool for every scenario.

If you have already found the listing you want on another portal, talk to that agent directly. Knocknock helps when you are still researching, not when you have decided.
If you need to close in under 24 hours (emergency move, sudden job transfer), traditional portals can be faster in the very short term — more visible inventory immediately.
If your niche is hyper-specific (a heritage-listed property in a particular conservation area, a smallholding in a specific rural municipality), the agent pool on Knocknock may be smaller than a large generalist portal.
If you are just window-shopping with no real intent to move in the next 3–6 months, a portal with no signup serves better — Knocknock works best with real intent because agents invest time in replies.

For everything else — serious search to rent or buy, a first apartment, a city move, an expat arriving — the inversion works.

Where we are

Launching in Brazil first (Q2 2026), then expanding. The agent side has been live as Knocknock.pro since 2024 — 1,500+ agents already use it as their day-to-day CRM. The client side is the missing half.

If you want to be in the first wave, post your first request.