Homebuyer
€399 once
Applicable tax included
Learn the method for a home or second-home purchase.
Includes 12 months of Navigator. Nothing renews automatically.
Learn the process. Plan your purchase.
Practical guides and free tools to help you understand the process and test your assumptions. Structured courses and Navigator help you develop your knowledge and organise your project.
A fictional purchase, with every cash assumption visible.

Every amount is a hypothetical teaching assumption, not a recommendation, a property quotation or a loan decision.
Simplified cash allocation using these hypothetical amounts. It excludes running costs, ongoing repayments, currency conversion and anything not entered. The reserve is cash held aside, not a purchase expense. Not a complete transaction cost, an affordability verdict or a required deposit.
Borrowing covers part of the price. Your cash also needs to cover the costs you include and the reserve you choose to retain.
Explore the full case Use your own figures
Free to explore. No account required.Preview a real lesson How we use sources
Investing to let?
A fictional €150,000 flat let at €700 a month has a 5.6% gross yield. Once empty months, running costs and the loan are paid, the owner still adds about €276 a month before tax. See why, and test what changes the answer.
Try the rental example Free, no account. Change the rent, costs or loan yourself.
Understand the questions and evidence.
Explore guidesExplore figures and assumptions.
Open tools Property casesLearn the wider method.
View coursesMaintain your project.
Explore NavigatorSeparate the price from acquisition costs, financing, works and the cash you keep back.
Read the guideUnderstand what to gather and what to ask before speaking to a lender.
Read the guideFind the guidance written for your situation. Country-specific guides say who they are for.
Explore the guidesTwo free tools, with their scope and assumptions explained.
Selected taxes and notarial costs for an ordinary residential purchase, from the rate and treatment you confirm.
Open the estimatorWork out the cash to have available: your price less the amount you plan to borrow toward it, plus costs, works and the reserve you keep. It estimates no rate and makes no lending assessment.
Build a cash planLearn
Learn how the buying process, financing and evidence fit together, then apply that method to your own project.

€399 once
Applicable tax included
Learn the method for a home or second-home purchase.
Includes 12 months of Navigator. Nothing renews automatically.
€799 once
Applicable tax included
Extend the method to an investment project.
Includes 12 months of Navigator. Nothing renews automatically.
Purchased teaching remains available when Navigator access ends. After the included 12 months, you can choose another 12 months of Navigator for €149. Initial course purchases include a 15-day money-back guarantee; a Navigator extension does not, but it is refunded in full if you withdraw within 14 days. See the refund and cancellation terms and how Navigator access works.
Market & regulation
The 2026 and 2027 electricity factors, the documents to request, and what to keep in your renovation budget.
Read the explainerOur method
Learn the idea. Work through the example. Record what matters to you.
See a real financing lesson and its printable companion. Follow the reasoning, then identify the inputs and evidence your own situation needs.
Explore the lesson previewEach tool shows its assumptions and what it leaves out. Where a calculation rests on a rule, the method page links the primary source it was built from.
A source-check date records when we last checked the method. It does not confirm the rate or treatment for an individual property, so check transaction-specific matters with the relevant professional.
How calculations are explainedMeet your instructor
Principal Advisor
Rivière Advisory
MBA, HEC Paris
View James’s professional background on LinkedInA decade of experience and specialist training in investment and real estate management.
James holds an MBA from HEC Paris, is a CFA® charterholder and a member of CFA Society France, and has completed a real estate programme at the London School of Economics.
His approach combines investment analysis, risk management and practical property evaluation to help buyers understand the numbers, test assumptions and make informed decisions.
HEC Paris’s Grande École programme: No. 1 in France, Le Figaro Étudiant 2026.
Qualifications and memberships relate to James personally; they do not imply institutional endorsement of the Playbook.