What do IRR, cash flow and margin mean in property development?

Why Financial Indicators Are Key to the Success of a Development Project

What Is IRR and How It Affects Your Chances of Securing Financing

IRR (Internal Rate of Return) is the internal rate of return that shows what percentage per year your invested capital earns. In simple terms: IRR tells you how quickly and efficiently your money grows. Banks and investors use IRR to compare multiple projects and decide where to place their money. The higher the IRR, the more attractive the project.

For residential projects without major risks, the target IRR is around 10-12%. For projects with higher risks or longer implementation periods, banks expect an IRR of 15-20%. If your project does not reach the minimum required IRR, the bank simply will not approve your loan. This is because IRR takes into account the timing of cash flows – when money goes out and when it comes back. This is crucial for developers, as expenses come at the beginning and revenues only after years.

How IRR Is Calculated in Practice

IRR is calculated as the discount rate at which the net present value of all future cash flows equals zero. The calculation is complex and requires financial software or special calculators. For developers, it is important to know that IRR is not just a single number – it is an indicator that you must be able to defend before the bank. If the calculation seems complicated to you, you are not alone. The Czech legal team at ARROWS works with financial experts to help clients prepare the documentation that banks require.

Why IRR Is Not Everything

IRR has its pitfalls. It ignores the absolute size of the project – a small project with a high IRR may be less interesting than a large project with a slightly lower IRR. IRR also assumes that future cash flows are reinvested at the same rate, which is not the case in reality. Therefore, you should always combine IRR with other indicators such as NPV (Net Present Value) and cash flow analysis.

Cash Flow: The Lifeblood of a Development Project

Cash flow is the movement of money – when, how much, and where money flows. In development, cash flow is king. At the beginning of a project, you have massive expenses: land acquisition, project design, building permits, construction. Revenues only come after years, when you sell or lease the project. If you do not have enough cash to cover expenses during critical phases, the project will collapse.

Development projects typically have negative cash flow in the initial phases and positive cash flow only in the final phase. Banks therefore require a detailed cash flow forecast for the entire duration of the project – usually 2-5 years. This forecast must show that you have enough money in every month to cover all obligations.

How to Create a Reliable Cash Flow Forecast

A cash flow forecast must include all items: land costs, construction costs, fees for designers, lawyers, marketing, loan interest, contingency reserves for unexpected expenses, and revenues from sales or leases. The most common mistake made by developers is underestimating costs and overestimating revenues. Banks know this well and therefore require conservative estimates.

Contingency should be 5-10% of total costs. If you do not have a reserve, any complication can put you in financial distress. When preparing project documents, the Czech legal team at ARROWS recommends that clients anchor protective clauses in contracts with suppliers to ensure flexibility in case of cash flow changes.

Cash Flow and Phased Financing

Banks usually provide financing in two phases: a development loan for land acquisition and the start of construction, and a construction loan for the construction itself. You draw funds gradually as the project progresses. Banks release money only after pre-defined milestones are reached and upon presentation of confirmation that you have successfully completed the previous phase. This process is administratively demanding and requires precise documentation.

The Prague-based law firm ARROWS prepares all documentation required for loan drawdowns for clients, including contracts with suppliers, construction supervisors, and banks. Our lawyers ensure that all conditions are legally sound and comply with regulatory requirements. Get in touch with us at consultation@arws.cz to get a tailored legal solution.

Financial Risks of a Development Project

Risks Associated with Cash Flow

The most common risks are: construction delays, cost increases, problems with selling units, and changes in interest rates. Every month of delay means higher interest and later revenue from sales. If you have a fixed-term loan, it may happen that the loan expires before you sell all units. Then you have to refinance under less favorable conditions.

Margin: How Much You Should Keep

Margin is your profit calculated as a percentage of total costs or the sales price. In development, two terms are used: profit on cost and margin on GDV (Gross Development Value). Profit on cost is profit divided by total costs. Margin on GDV is profit divided by total revenues.

The ideal profit on cost for development projects is 16-20%. This means that if your costs are CZK 100 million, you should have a profit of CZK 16-20 million. Banks often require a minimum of 20% margin on GDV, which with a 20% profit on cost means that profit accounts for 16.7% of total revenues.

Why a 16-20% Margin Is Safe

This margin level provides a safety cushion in case of market changes, delays, or cost increases. If you work with a 10% margin, a single delay or an increase in material prices can put you in a loss. Market development is unpredictable, which is why you need a reserve.

Banks know that projects with a lower margin are riskier, and therefore either refuse to finance them or require higher equity. For projects with higher risk (complicated permitting, uncertain market), banks often require a margin of up to 25%. The Czech legal team at ARROWS helps clients structure their projects to meet bank requirements for minimum margins.

Margin vs. IRR: Which Is More Important?

Both indicators are important, but they serve different purposes. Margin shows how much money you make in absolute terms. IRR shows how efficiently you work with time and capital. You can have a project with a high margin but a long implementation period, which will reduce the IRR and worsen profitability.

Banks look at both indicators. The margin must be sufficient to cover risks, and the IRR must be sufficient for comparison with alternative investments. If your project has a margin of 25% but an IRR of only 8%, the bank may prefer another project with a margin of 20% and an IRR of 12%.

Practical Advice for Financing a Development Project

Financing is the most critical part of development. Without money, you cannot build the project, but poor financing can cost you all your profit. Banks in the Czech Republic usually provide loans up to 70-80% of the total project costs; you must finance the rest from your own resources. This ratio is called loan-to-cost (LTC).

How to Prepare a Project for the Bank

The bank will require: a detailed business plan, a cash flow forecast for the entire duration of the project, proof of ownership or an option on the land, a building permit or at least a zoning decision, contracts with architects and suppliers, market analysis, and a sales strategy. The most important is the cash flow forecast, which must be conservative and realistic.

The bank will also check your track record – previous projects you have completed. If you are a new developer, you will need a strong partner or guarantees. The Prague-based law firm ARROWS helps new developers structure partnerships and prepare documentation that increases credibility with banks.

Financing Structure in Phases

Typical financing has two phases: a development loan (for preparation and acquisition) and a construction loan (for construction). The development loan is short-term, usually for 12-24 months, with a higher interest rate. The construction loan is drawn gradually according to supplier invoices, and the bank releases funds after checking the completed work.

For larger projects, mezzanine financing is used – a supplementary loan that covers the gap between equity and the bank loan. Mezzanine financing is expensive (interest of 10-15% per year), but it can be crucial for projects with high returns. The Czech legal team at ARROWS prepares contracts for mezzanine investors and ensures that all conditions are transparent and legally sound.

Risks Associated with Financing and Investors

How to Minimize Risks in Financing

The greatest risks in financing are: inability to meet drawdown conditions, construction delays, cost increases, drops in sales prices, and refinancing. To avoid them, banks require detailed reports, inspections, and reserves.

It is key to have all scenarios covered in contracts: what happens if construction is delayed, if costs exceed the budget, or if you do not sell all units. The Prague-based law firm ARROWS prepares contracts with banks, suppliers, and buyers so that all scenarios are legally covered and the risk of litigation is minimized. Representation in litigation and licensing proceedings is one of our key services.

Why Development Is More Complex Than It Seems

At first glance, development looks simple: you buy land, build, and sell. In reality, every step is full of hidden exceptions, procedural details, and links to other regulations. For example, obtaining a building permit can take 6-12 months and requires dozens of documents, each with its own legal requirements. A change in the zoning plan can ruin the entire project.

Simple steps, such as submitting a loan application, have hidden details: the bank requires various types of collateral, different kinds of insurance, and various forms of legal security for contracts with suppliers. A layperson often does not see that a contract with a supplier must be structured in such a way that it is acceptable to the bank as part of the loan collateral. If the contract does not contain the correct clauses, the bank will not accept it and will not approve the loan.

The Prague-based law firm ARROWS handles these agendas daily. Our lawyers know what clauses banks require, what documents authorities need, and what hidden pitfalls lurk in simple processes. Thanks to this, we can significantly shorten the time for clients and minimize the risk of errors. We routinely partner with in-house corporate lawyers to resolve special matters.

SHARE DEAL Office: When You Need More Than a Lawyer

In addition to legal services, the Prague-based law firm ARROWS also offers consultations for investors and entrepreneurs looking for suitable partners or opportunities for acquisitions or exits. We are partners of SHARE DEAL Office, which specializes in connecting commercial real estate projects with investors and discreetly brokering large deals. 

The Czech legal team at ARROWS has experience not only with the legal framework of these transactions but also with their implementation in practice – thanks to this, they can advise clients on economic feasibility and negotiating terms. Our firm is insured for damage up to CZK 500,000,000, so it is safer for the client to have the matter professionally secured.

Our portfolio includes more than 150 joint-stock companies, 250 limited liability companies, and 50 municipalities and regions. We pride ourselves on speed and high quality. We can connect clients with each other if they have interesting investment or business opportunities. And we are also happy to listen to interesting entrepreneurial or business ideas.

Conclusion: Entrust Your Project to Professionals

Financing a development project is a complex process where financial metrics, legal regulations, bank requirements, and risks intersect. IRR, cash flow, and margin are not just numbers – they are tools that decide the life or death of a project. A single mistake in the cash flow forecast, one insufficient legal document, one delay in obtaining a permit, and you can lose millions.

The Prague-based law firm ARROWS handles this agenda daily. We specialize in development projects, and we know the requirements of banks, authorities, and investors. We prepare all documentation: contracts with banks, suppliers, buyers, contracts for work, lease agreements, and pre-sale agreements. We represent clients in negotiations with authorities, banks, and partners.

If you do not want to risk mistakes, damages, or fines, you can safely leave the entire matter to ARROWS. Simply contact the office at consultation@arws.cz.