Your Home Finance
Shared Ownership isn't a smaller mortgage. It's a mortgage plus rent.
Your deposit is calculated on your share, not the full price — but lenders assess the mortgage, the rent and the service charge together.
30+ years
mortgage advice
Mortgage + rent
assessed together
Shared ownership
lender panel
Staircasing
planned ahead
Situation grid
What's your Shared Ownership situation?
First home through Shared Ownership
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Staircasing — buying more shares
Select →
Only a 5% deposit on my share
Select →
Worried the rent breaks affordability
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Lender declined the scheme
Select →
Short lease or high service charge
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Remortgaging my existing share
Select →
Credit issues + Shared Ownership
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How your case is assessed
How lenders assess a Shared Ownership purchase
The share makes the deposit smaller. It does not make the affordability assessment smaller — and it narrows the list of lenders willing to look at you at all.
Your deposit is on the share, not the price
A 10% deposit on a 40% share of a £300,000 home is £12,000 — not £30,000. That's the genuine advantage of the scheme, and it's why Shared Ownership gets people in years earlier than saving for a full purchase.
Affordability includes the rent
Lenders stress-test the mortgage payment, the rent on the share you don't own and the service charge as one monthly commitment. Buying a smaller share lowers the mortgage but raises the rent — the total often barely moves.
The lease, the share size and the landlord
Lenders set a minimum unexpired lease term and a minimum acceptable share, and need the housing association's mortgagee protection clause. The landlord also runs its own eligibility and affordability check — household income caps apply.
Staircasing and what it costs later
Buying further shares means a fresh valuation at the price of the day, legal fees, and either a further advance or a full remortgage. Rent on the unsold share is usually reviewed annually and often linked to inflation.
You don't need to guess whether the rent will break your affordability — we model the full monthly commitment before any hard search.
Specialist insight
Not every lender treats Shared Ownership the same way
Minimum share · steep rent review · short lease
Higher challenge
Narrow panel · some lenders won't accept small shares or inflation-linked rent escalation · lease term and service charge can rule out the property before your income is even assessed.
Larger share · stable rent · clean affordability
More lender choice
Broader shared-ownership panel and better rate tiers · a clearer path when the share, the rent and the combined monthly commitment line up.
Independent reviews
Verified client reviews on Reviews.io
Live verified reviews — not cherry-picked on-page quotes.
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Your adviser
Jay Sabine
Expert mortgage adviser specialising in complex cases including adverse credit, self-employed borrowers, and first-time buyers. All advice is tailored to your individual circumstances.
Content reviewed: 3 August 2026
CeMAP awarded by The London Institute of Banking & Finance. Cert CII (MP) awarded by the Chartered Insurance Institute.
Specialist in Shared Ownership mortgages
Helping clients with complex credit histories for over 30 years · CeMAP, Cert CII (MP) · FCA regulated
“People come to us thinking Shared Ownership is a smaller mortgage. It isn't. It's a mortgage plus rent plus a service charge — and the lender assesses all three before it looks at your deposit.”
Reviewed by Jay Sabine · Mortgage adviser · 30+ years' experience
Lived experience
Mistakes we repeatedly see
Not theory — patterns that keep showing up when buyers reserve a share before anyone models the full monthly cost.
Treating the rent as if it isn't a commitment
Buyers budget for the mortgage and mentally file the rent as 'like a bill'. Lenders don't. Rent and service charge sit in the affordability calculation alongside the mortgage, and they are what most declines come down to.
Buying the smallest share to get in
A smaller share means a smaller deposit and a smaller mortgage — but more rent, a narrower lender panel, and a more expensive staircase later. The cheapest way in is not always the cheapest way to own.
Assuming any lender will do Shared Ownership
It's a restricted panel. Plenty of well-known lenders either don't offer it or set share and lease conditions that quietly exclude the property. Applying blind burns weeks and leaves a footprint for nothing.
Ignoring the lease and the building
Unexpired lease term, service charge history, cladding and remediation paperwork on flats — these decide lendability. We check them before an application, not after a valuation comes back.
Real client scenarios
Real mortgage journeys
Based on genuine cases we've helped with. Personal details have been changed to protect privacy.
Rent counted — the right lender still said yes
- 40% share
- 5% deposit on share
- Rent + service charge
- Approved
Situation
First-time buyers with a modest deposit reserved a 40% share, having been told by a high-street lender that they couldn't afford it.
Challenge
The lender's affordability model treated the rent and service charge harshly and left them short — despite the mortgage itself being comfortably within reach.
What changed
We tested the full monthly commitment across the shared-ownership panel and placed them with a lender whose treatment of rent and service charge suited the case.
Outcome
Approved on the 40% share with the deposit they already had — no need to delay a year saving more.
Why it worked
The problem was never their income. It was the wrong lender's assessment of rent — and that varies more between lenders than people expect.
Staircasing — further advance beat a full remortgage
- 25% → 50% share
- Fixed rate mid-term
- Valuation risk
- Costs modelled
Situation
An existing shared owner wanted to increase her share from 25% to 50% while still mid-way through a fixed rate.
Challenge
Remortgaging the whole loan to fund the extra share meant an early repayment charge, and the new valuation would reset the price of the shares she was buying.
What changed
We modelled a further advance against a full remortgage, factored in the ERC, valuation and legal costs, and timed the purchase of shares around the fixed-rate end date.
Outcome
She staircased to 50% via a further advance, kept her existing rate on the original loan, and cut her rent.
Why it worked
Staircasing was treated as a cost decision with a timing element — not just an application to buy more of the house.
What happens after you get in touch
From first contact to a clear answer
What happens when you get in touch — no hard search at this stage.
- 1
We understand the scheme, the share you're buying, the rent and your deposit (no hard search)
- 2
Jay checks combined affordability — mortgage, rent and service charge together
- 3
We match you to lenders who genuinely accept your share size, lease and landlord
- 4
If proceeding: Agreement in Principle → housing association approval → application → completion
Reassurance
- Free initial review — before any hard credit search
- We check the rent and service charge against affordability before recommending a lender
- Not every lender does Shared Ownership — applying to the wrong one wastes weeks and leaves a footprint
Before you enquire
What we'll ask you on the first call
Straightforward questions — no hard credit search at this stage.
- The scheme and housing association, and the share you're buying (or already own)
- Full market value, share value, monthly rent and the service charge
- Your deposit, income and any credit history we should know about
- Whether you plan to staircase later — and roughly when
Advisory promise
When we might tell you to wait
We won't always tell you to apply today.
We may advise waiting where the rent and service charge leave no affordability headroom, where a slightly larger share would open a materially better lender panel, or where the lease term or building paperwork needs resolving before any lender will value the property.
If waiting a few months, adjusting the share, or choosing a different scheme would meaningfully widen your options, we'll say so before another footprint goes on your file. We give advice — not just applications.
Straight answers
Common questions about Shared Ownership mortgages
Our promise
What we'll never do
- Tell you to apply if it won't work
- Send applications everywhere
- Recommend borrowing beyond your budget
- Hide bad news
We don't tell you Shared Ownership is cheaper. We help you understand what the share, the rent and the lease really cost you.
Find out what your share and rent really mean
Tell us the scheme, the share you're buying and your deposit — we'll assess what's realistically possible.
We don't recommend a lender until we've tested your affordability with the rent and service charge included, and checked the lease will pass.
A five-minute conversation now can stop you reserving a share you can't get a mortgage on.
£500 adviser fee — payable on completion.
Get Clear, Honest Mortgage Advice — Before You Apply
Free consultation • No credit search • FCA regulated
Struggled to get approved elsewhere? We specialise in complex cases including CCJs, self-employed income, and declined applications. Over 90% of our clients had concerns about their situation before speaking to us.
The Basics
Your Needs
Property
Income
Credit
Step 1 of 5
Related guides
Shared Ownership — related decisions
If your purchase hinges on one of these questions, these chapters go deeper.
First-time buyer
The wider first purchase decision — deposit, affordability and readiness.
Open guide →
5% deposit mortgages
If a small deposit is the constraint, whether or not you use a scheme.
Open guide →
Shared ownership explained
How part-buy part-rent works, eligibility and the rules behind the scheme.
Open guide →
Help to Buy and schemes
Comparing Shared Ownership against the other routes onto the ladder.
Open guide →