The Property AI Brain
The complete property knowledge. Plus the best memory system, growing with you. Works inside the ChatGPT, Claude or Gemini you already use.
More than 150 members have already implemented their Property AI Brain.
Powered by 
Since 2021, we have been the tech people of UK property:
data, property, technology and business.
Trusted and endorsed by the leading voices in property
What it is
Every AI learned from the same internet. What you give it next is your choice.
The whole internet
Your Property AI Brain
Plug Property Filter API/MCP (optional)
No prompts to write
Every job already has its command. Press it, and the finished work comes back to you.
/spot-motivated-sellers
Find properties
This morning's shortlist: the handful of listings worth your attention today, each with the reason it made the cut.
You scroll in the evening, on your phone, and see the same fifteen listings you saw yesterday.
Thirty-plus jobs like these, across the whole deal. Or just ask in plain English.
No tech skills needed
"You don't need to be IT literate.
Ten minutes and you'll be fine."
Darren H.Property AI Brain memberTestimonials
More than 150 members have already been through the transformation.
"It's told me to walk away from deals I thought looked really good. I stack it together and it's like: no, this doesn't work."
"It highlighted stuff I wouldn't have even thought to ask. It knows what questions to ask."
"If you are involved in property acquisition, it's a must. I wouldn't really see it as optional."
Morgan N.Moving into property sourcing"I have an amazing employee now, bringing me leads every single day."
"Rather than spending 90 minutes on a deal pack, which was the average before: it's 10 minutes, max."
"Today it found an investor enquiry I had missed for five days, draft me the reply and I pressed send."
David G.Deal sourcer, Manchester and Liverpool, six years"It has raised our self-esteem. So many times we were thinking: are we doing it right? Is it enough?"
"I feel like I have 40 employees. It takes me a week to do all of this by myself, and I can have it in 10 minutes."
"It doesn't allow us to give up on a potential deal. It keeps pushing."
"It's already saved me one day a week, at least."
"You would pay someone 4,000 pounds a month, maybe more, to do what Claude is doing. It's paid for itself 10 times over already."
"You don't need to be a technical person to do this. Once you've got Claude installed, he becomes your technical person."
Michael C.Manages around 25 serviced accommodation units in Leeds and Harrogate"It's completely changed my days. I spent time with my son. I could just ask it to do stuff, walk away and come back. It's done for me."
"It said: 'This is not part of your strategy, Hanna. Has something changed? Tell me.' I love it because it keeps you focused on what I said."
"It saves you concrete time. It's real time. And it declutters your brain."
"It's life-changing. It changes the way you look at life."
"Within three weeks, so much has changed, compared to three years."
"I'm not in a small little Volvo anymore. I'm in a Ferrari."
Serena L.Property investor, Reading, 3 weeks in"It's changed my life already."
"Fifteen minutes for a refinance assessment that would have delayed our board meeting by a week."
"It's replacing twelve grand a year of systems."
James B.Portfolio landlord, 29 properties and a construction business"It's made my life so much easier, and it's freed up so much time."
"It pushes back. It says: why are you looking at this? It's outside your area, it doesn't meet this criteria. Is it a shiny penny?"
"Every morning it assesses my emails: these need answering immediately, these are marketing."
Daniel B.Investor with a portfolio in Leeds, now looking at Reading"It's probably trebled my productivity. For the same amount of time, I'm getting three times the output."
"I've now got a business plan I would happily present to any bank in the city, because it is that tight."
"My confidence has gone through the roof since we've got it."
Paul B.Landlord for 40 years, now running serviced accommodation"Working out the deals is going really fast now."
"Everything I do is compounding. It's already there."
"The best alter ego you can have."
Armand P.Netherlands, IT contractor going full-time property"Property analysis including pulling comparables, and created a deal pack exactly the way I wanted it."
John Z.London sourcing agent"It's like having your own personal PA, without paying them."
"It throws spanners back at you. It actually says: are you sure you want to do this?"
"It's brilliant for reading legal packs. It'll say: you need to question this back to the solicitor."
Darren H.Runs a done-for-you sourcing business, Preston and the North West"Seeing your brain gave me the vision."
"I do love your product."
Iain G.Full-time job, builds evenings and weekends"It stopped me staring at my email and got me working."
Leo K.Investor and developer"Gave me an honest, numbered read on how strong my case actually was, not just reassurance."
"I didn't have to pay a solicitor a penny to get any of this done."
"Settled at £5,500 (from a £3,500 opening offer)"
Michael C.£6,500 damages claim, settled for £5,500"Why would I want to be running around when I can have an executive assistant that can do it for me? That's the no-brainer."
"I don't want to be busy for busy's sake. It takes away that being busy without any income-producing activity."
"This is my first ever software, and it's the best."
Eruvwu O.Starting out as a deal sourcer"So impressed."
"Its challenges were really reasonable."
"as a quick and rapid way to more diligently assess potential properties its been a massive help - saved me days and mental energy."
Alison S.Assessing a 10,000 sq ft commercial building"I ran our booking platform data against Xero for one of our SA units and it flagged £18k of bookings against £0 showing as income in the books, something I'd never have cross-checked manually."
"It’s giving me the system that holds the strategy together when I'm asleep, walking the dog and can't read a screen."
Paul B.Serviced accommodation, three weeks in"After the AI Brain Installation I had to get used to talking to Claude and make her do stuff for me that makes my life easier."
"She is now drafting e-mails, organising files and updating my calendar for me."
Koen D.After his Property AI Brain installation"Got the brain to pull the top 10 prospects for my area & strategy."
"It helped to stop me scrolling through lots of pages and immediately processed the data to give me 10 most likely leads to convert."
"I can really understand people saying that this feels quite welcoming to have a helper in your corner at any time of day or night who truly remembers everything."
Nicholas C.Can feel the stress fading already"My Brain did nearly all of it."
"A human webmaster would have blocked my number by edit twenty. My Brain did not flinch."
"I am not a software person, so if I can do it, anyone can."
Serena L.Built and published her website with her Property AI Brain"Wow! That is like an intense therapy session isn’t it! Really good to get some of those things off my chest actually! Super good! Excited where this will take me! Bring it on!"
Hugh B.Just finished his Property AI Brain onboardingWhy now
"AI will transform the global economy."Kristalina Georgieva, International Monetary Fund
For years, the biggest investors have had powerful technology behind their decisions.
BlackRock's Aladdin helps investment teams analyse risk and manage portfolios.
Now, tools like Claude AI put research, document analysis and financial modelling within reach of a small business.
Think what that means for your next property deal.
More opportunities assessed. Numbers ready sooner. More time to negotiate, secure funding and move a deal forward.
What it does
Six stages, from your strategy to your portfolio, five jobs each. Each job is one command, or just ask in plain English.
Lock onto the one strategy that fits your money, time and goal, and end the strategy-hopping.
Motivated-seller channels, direct-to-seller letters, lease options and agent relationships.
Net yield, cash flow, cash-on-cash, ICR, true cost. BTL, HMO and BRRR side by side.
The low offer, the creative offer, lease options and seller finance, with the delivery script.
The exact words for every pushback, before you pick up the phone.
BTL mortgages, bridging, development finance, the ICR test and the overleverage traps.
BRRR, HMO, serviced accommodation, options, commercial and supported living.
Refurb, planning gain, conversions, loft and roof, with real budgets and a tender pack.
Tenant pipeline, arrears discipline and room standards, self-managed or with an agent.
Flip, assisted sale, refinance-and-hold or assign the option. Know your way out first.
The exchange timeline, gazumping defence, down-valuations.
Pull your capital back out and scale past the wall most landlords hit.
Building regs, client due diligence, sourcing rules, mailing law, with the evidence trail.
Personal versus company, Section 24, incorporation relief, SSAS.
Sourcing models, partner structures, templates and systems.
Build the power team, and work with agents by knowing what they want.
The criteria system, the Lead Generator, ownership and EPC filters.
Live deal reviews, other investors' lessons, selling on what doesn't fit you.
Become the investor sellers call first.
The weekly review, SOPs for repeated jobs, books kept straight.
Your week, sorted
Every lead, letter and chase waits for your evening. Your Property AI Brain takes the repetitive part.
Your week today
Covered · ready for your yes
Anything that leaves your desk waits for your yes first.
Yours · empowered
The Time Machine
The months go in the wondering between the steps, not in the steps.
On your own
With your Property AI Brain
On your own
With your Property AI Brain
On your own
With your Property AI Brain
On your own
With your Property AI Brain
On your own
With your Property AI Brain
This morning, before you were up
Illustration
Nothing leaves without your yes. It drafts, you decide.
More than property
Most investors run property alongside a job or a business. Your Property AI Brain holds all three.
"It checks each lead before I see it: room sizes from the floorplan, price history, EPC, the rent on the street, signs of motivation, etc."
David G.Deal sourcer, Manchester and Liverpool"I'm building an AI-first business that will run before I wake up."
Paul B.Investor and broker"It's life-changing. It changes the way you look at life."
Serena L.Property investor, ReadingYour transformation
You don't need to be technical.
"It changes the way you look at life."Serena L., Property investor, Reading
"My AI Brain also calculated room sizes from floor plans saving me days on site on a commercial contract I’m working on."Paul B., Investor and broker
"One hour of dictating. A branded investor pack that used to take me a full day."Michael C., SA operator, Yorkshire
"It stopped me staring at my email and got me working."Leo K., Investor and developer
"Fifteen minutes for a refinance assessment that would have delayed our board meeting by a week."James B., Portfolio landlord
"We can now scale without me being the overthinking bottleneck."Paul B., Investor and broker
Getting there takes more than a clever prompt.
It takes AI connected to your property data, your tools and the way your business works.
The next deal will go to someone using AI. Make sure that someone is you.
The doubt we hear most
"It'll get things wrong on real money."
So we built the Property AI Brain around it.
Every figure, rate and rule points to a source. When it can't verify something, it tells you.
Offers, emails and analyses arrive as drafts for your call. It never sends or commits money on its own.
The hidden cost, the better exit, the deadline, the risk you hadn't seen.
It flags where finance, tax and lettings are regulated and signposts the right professional.
Who we are
Since 2021, Property Filter has built the technology property people use every day. We are experts in property data, property deals, technology and business, so we are the people to teach you AI and to set up your AI so it works for you. Here is why we exist, what we believe, and who you will be working with.
We kept meeting investors who had done the courses and read the books, and still could not make a deal stack. The information was never the problem. Their evenings went on portals, spreadsheets and chasing, and the deals went to whoever got there first.
A platform that reads the whole UK market every day, one hundred million data points, and turns it into motivated sellers worth a call. A method, the Deal Making Blueprint. And a community of 1,800+ active members who had 3,250+ offers accepted in the past 12 months.
When it gave us our time back, we built the Property AI Brain so members could do the same. More than 150 members have installed it.
Our mission: help property people buy back one million hours of their time.
481,260+ Hours Bought Back already
So they can
An hour bought back is an hour a computer job no longer takes from you: the portal scroll at midnight, the spreadsheet, the chase.
French engineer, investing since 2013, full-time in property since 2021. Nine-time award winner and judge at the Property Investor Awards.
Co-founded by Guillaume Black, Florian Moulin and Cyril Moulin. Tech entrepreneurs, engineers and property investors who build the systems we use ourselves.
We know technology. We know property. We know business. And we know how to help you put the three together.
Your Property AI Brain runs on the same four pieces.
The platform UK investors use to find motivated sellers and off-market opportunities. Your Property AI Brain plugs straight into it.
1,600+ deal-making plays across 20 areas of UK property, the same library your Property AI Brain answers from.
Two new ready-to-use prompts every week.
Active UK investors sharing real deals, wins and honest lessons, with five or more live calls a week.
We see a property business where the computer work runs on its own, and people do what only people can: the viewings, the calls, the deals.
You don't need to become an AI expert. You need people who understand your business and can show you where to start.
Join the next cohortAI Guides
Eight practical guides on using AI in a UK property business. Free to read, no sign-up.
Your Property AI Brain connects to your Property Filter account, so live property data, comparables and your pipeline flow straight into it. You start from your own data on day one.
Questions
It is built for exactly that doubt. Every figure points to its source, and when it cannot verify something it says so. Offers, emails and analyses arrive as drafts: it never sends anything or commits money on its own. Where finance, tax or lettings are regulated, it tells you and points you to the right professional.
If you can write a text message, you can run it. You talk to it in plain English, or type a short command, and a step-by-step guide takes you through the install.
It works on your deal, your area and your numbers, and shows its sources every time. Unique is the point.
No. You keep using your own ChatGPT, Claude or Gemini. The Property AI Brain is the context it reads: UK deal-making knowledge, plus what it learns about your business, in files that belong to you. You brief it once, not every time. See the difference, in plain English.
You do. Your notes and documents live as plain files in a folder on your own computer, which you can open, move or back up whenever you like.
No. It is your context, set up around your own business, that your own AI uses on your deals.
Signing up is free and commits you to nothing. We share the details personally when the next cohort opens.
"The best purchase I've made in property, and I've spent money on property education over the years."
Tim R., landlord, works alone · Property AI Brain owner
Join the next cohort
No payment, no commitment. We'll contact you personally when the next cohort opens.
Cookies, the short version
Analytics shows us which parts of this page people actually read and what brought you here, so the next cohort gets built around it. Nothing is sold.
What we collect, and what it buys you
What we never do. We never sell your data. And none of this is needed to join the next cohort, so if you choose essential only, every part of this site still works exactly the same.
Tools: Google Analytics 4 (UK and EEA data terms) and the Meta pixel, plus a cookieless visitor counter from Cloudflare that stores nothing on your device and runs either way. You can change your mind any time from the Cookie choices link in the footer. Full detail on our Privacy page.