Mar 11 • 🏠 Real Estate
Islamic home finance explained: How HPP (Diminishing Musharakah) actually works
Buying a home is the largest financial decision most people make. For Muslims — and anyone who wants to avoid interest — a conventional mortgage is off the table. Here's how the halal alternative actually works.
THE PROBLEM WITH CONVENTIONAL MORTGAGES
A conventional mortgage involves a bank lending you money at interest. You borrow £300,000, you repay £450,000+ over 25 years. The extra £150,000+ is interest (riba) — the cost of borrowing money.
This is clearly prohibited in Islamic law, and many non-Muslims also find the interest model uncomfortable.
THE HALAL ALTERNATIVE: HOME PURCHASE PLAN (HPP)
An HPP — formally called Diminishing Musharakah (diminishing partnership) — is a completely different structure that achieves the same result (you get the house) without any interest.
Here's how it works:
Step 1 — Co-ownership: You and the bank jointly purchase the property. If the house costs £300,000 and you have a 20% deposit (£60,000), you own 20% and the bank owns 80%.
Step 2 — Monthly payments: Each month, you pay two things:
- Rent: You pay rent to the bank for using its 80% share of the property
- Acquisition: You buy an additional small share of the property from the bank
Step 3 — Diminishing partnership: Over time, you buy more and more of the bank's share. The bank's ownership diminishes (hence the name). Your rent payments decrease because you're paying rent on a smaller share.
Step 4 — Full ownership: At the end of the term (typically 25 years), you have bought 100% of the property. The bank has no remaining share.
WHY THIS IS DIFFERENT FROM A MORTGAGE
In a mortgage, you're paying interest on a loan. In an HPP, you're paying rent for the use of property you don't yet fully own. These are fundamentally different contracts.
The bank is not a lender. It is a co-owner who sells its share to you gradually over time.
IS IT MORE EXPENSIVE?
Honestly — often yes, slightly. Islamic home finance providers carry higher operational costs. Monthly payments on an HPP are typically comparable to or slightly higher than conventional mortgages.
However, for many Muslims, the question is not "is it cheaper?" but "is it the right thing to do?" And there is a growing argument that the slightly higher cost is worth the peace of mind.
UK PROVIDERS
Al Rayan Bank — largest Islamic mortgage provider in the UK, competitive rates, good range of products.
Gatehouse Bank — strong HPP products, good for buy-to-let as well as residential.
HSBC Amanah — HSBC's Islamic finance division, limited availability but strong brand.
Ahli United Bank — available through brokers.
US PROVIDERS
Guidance Residential — the largest halal home finance provider in the US, uses a co-ownership model (Declining Balance Co-ownership Program).
UIF Corporation (University Islamic Financial) — similar model, available in most US states.
Devon Bank — smaller provider, Shariah-compliant mortgages in select states.
GETTING STARTED
The process is similar to a conventional mortgage: income verification, credit check, deposit requirements. The main difference is the legal documentation, which is more complex due to the co-ownership structure.
Use a broker who specialises in Islamic finance if possible — they understand the documentation and can compare products across providers.
Are you currently looking at Islamic home finance, already in an HPP, or still weighing options? Share your situation below.
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Islamic home finance explained: How HPP (Diminishing Musharakah) actually works
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