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Shared ownership, Help to Buy, and the third partner.
A housing association already co-owns. Adding an Islamic bank is a three-body problem. Some fintechs sell a co-ownership path that is closer to this than to Al Rayan. Read which body you are in.
The Mizan desk · 7 September 2026 · 9 min
English shared ownership: you buy a slice from a housing association, pay rent on the rest, staircaser later. That sentence is already diminishing musharakah in slow motion — except the association is not a Shariah board, the rent may be a policy rent, and the lease is a standard shared-ownership lease with clauses that would fail a classical ijara.
Layering a Home Purchase Plan on top of that, or using an Islamic product to buy the first slice, is where UK practice is thinnest. StrideUp and similar co-ownership offers market a Shariah option. The test is the same three contracts. A ‘Shariah option’ in a pitch deck is not a board report.
Help to Buy equity loan
The equity loan is a second charge that can accrue a charge after the interest-free period. That accrual is the problem. Using a conventional Help to Buy next to an Islamic HPP is mixing a partnership with a state loan that may become riba. Some scholars treated the original interest-free window as a grant-like facility; the charged years are not. This is not a paragraph you should skip.