Buyer schemes guide
Shared ownership: the full cost picture
Shared ownership turns one price into four moving parts: a mortgage on your share, rent on the provider’s share, a service charge, and a market valuation that reprices everything each time you staircase. It genuinely helps people leave renting — and it genuinely surprises people who only looked at the headline monthly figure. Here is the whole picture.
A worked example of the cost stack
Take a home with a full market value of £240,000 and a 40% initial share:
- Your share: £96,000 — a 5% deposit is £4,800, with a mortgage on the remaining £91,200.
- Rent on the unsold share: providers commonly charge in the region of 2.75% a year of the unsold £144,000 — £3,960 a year, £330 a month at the start, usually reviewed upwards annually.
- Service charge: set by the provider and building — ask for the current figure and three years of history, exactly as you would for any leasehold flat.
- The catch to check: you pay 100% of repairs and service charge even while owning 40% of the home. Newer model leases include limited repair-cost support in the first years; older leases do not.
The right comparison is this whole stack against renting the same home, and against a full purchase of a cheaper property nearby — which is where checking local sold prices for what £240,000 (or your share-adjusted budget) actually buys in the area becomes the deciding input.
Staircasing: the repricing machine
- Each step is at today’s value. If prices rose since you bought, later shares cost more; if they fell, less. Your street’s sold-price history is the best public preview of the RICS valuation you will be quoted.
- Small steps are now possible. Newer model leases allow staircasing in increments as small as 1%, with lighter valuation requirements for small steps — but fees per transaction still make very small steps relatively expensive.
- Selling has an extra gate. Most leases give the provider a period (commonly eight weeks) to nominate a buyer before you can list openly, and you sell your share at a valuation-set price, not simply the highest offer.
Important limitation
Percentages, review clauses and staircasing rules vary by provider and lease generation — the lease document governs, not the brochure. This is general information, not financial or legal advice.
Compare the alternative: what full ownership costs nearby
Frequently asked questions
How does shared ownership work?
You buy a share of a home — typically between 10% and 75% — with a mortgage and deposit sized to that share, and pay rent to a housing provider on the remainder, plus a service charge. You can usually buy further shares later (staircasing) up to full ownership on most schemes.
Who is eligible for shared ownership?
Broadly: household income of £80,000 or less (£90,000 in London), and you cannot already own another home. Individual schemes and providers add their own criteria, and some homes carry local-connection conditions.
What are the real monthly costs?
Four stacks: the mortgage on your share, rent on the unsold share, a service charge, and normal ownership costs like insurance. The advertised monthly figure usually looks lower than full ownership, but compare the total stack — rent plus service charge can grow faster than mortgage costs over time.
What is staircasing and how does the price get set?
Staircasing means buying additional shares after you move in. Each purchase is priced at the market value at that time, set by a RICS valuation — not at your original price. Newer model leases allow gradual staircasing in steps as small as 1%.
Is shared ownership leasehold?
Yes — shared ownership homes are leasehold, even houses, until you staircase to 100% (when houses usually transfer to freehold). Lease length, ground rent terms and service charge history deserve the same scrutiny as any leasehold purchase.