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Conveyancing Guide

# Buy 10%–75% of a UK Home via Shared Ownership: Check the Lease First

UK guide to buying a 10%–75% shared ownership stake. Learn which lease clauses, costs and staircasing issues to check and why you need a specialist...

PS 

PJ Singh

Co-Founder, Conveyancer Plus | Conveyancing Industry Expert

Saturday, 5 September 2026 8 min read 

Shared ownership lets you buy a share of a home, usually between [10%](https://www.gov.uk/shared-ownership-scheme) and 75%, while paying rent to a housing provider on the part you don't own. Your deposit and mortgage are calculated only on the share you buy, not the full property value, which is why the scheme appeals to buyers priced out of the open market. Most shared ownership homes are leasehold, with a housing association or registered provider holding the remaining share.

-   Shared ownership allows buyers to purchase a share between 10% and 75% of a home, paying rent on the remaining share they do not own. 
-   Monthly costs include mortgage repayments, rent set at about 2.75% to 3%, service charges, and sometimes ground rent, all of which can increase over time. 
-   Eligibility depends on household income limits and whether buyers cannot otherwise afford a suitable home, with two affordability checks required. 
-   Staircasing enables gradually increasing ownership shares through valuation-based purchases, but resale may involve provider nomination delays. 
-   Using an experienced conveyancer is crucial to navigate lease terms, provider consents, and staircasing processes to avoid delays or legal issues. 

## Table of Contents

## What does shared ownership mean in property, and how does it work in practice?

Buying under this scheme means purchasing a share of a home within the regulated range, and taking out a mortgage and deposit against that share alone. On a £300,000 home, buying a [40%](https://spolton.mortgage/mortgage-calculators/shared-ownership-calculator/) share means your mortgage and deposit apply to £120,000, not the full price.

You then pay rent to the provider on the remaining share they still own, usually reviewed annually and often linked to inflation. This rent sits alongside your mortgage payment as a genuine monthly cost.

Legally, you occupy the whole property under a long lease, even though you only own part of it. The mechanics break down as follows:

-   You buy a share (commonly 10%–75%) and get a mortgage and deposit sized to that share. 
-   You pay subsidised rent to the provider on the share you don't own. 
-   The provider retains legal ownership of the unbought share until you staircase further. 
-   You hold a lease giving you the right to live in and use the entire home. 

## Who can apply: eligibility and affordability checks

Eligibility rests on income and personal circumstances rather than credit score alone. Your gross household income must generally sit at £80,000 or less outside London, or £90,000 or less within London, and you need to show you can't otherwise afford a suitable home on the open market.

Qualifying circumstances typically include:

-   First-time buyers with no current property. 
-   Households forming for the first time, such as after a relationship change. 
-   Existing owners who will sell their current home before completing. 
-   Anyone previously owning a home who now cannot afford to buy outright. 

Two separate affordability checks then apply. The provider reviews your total housing costs, mortgage, rent, and service charge combined, to confirm the arrangement is sustainable long term, and your [mortgage lender runs its own affordability assessment](https://mortgageaffordability.co.uk/guides/shared-ownership-affordability) that also counts rent and service charges against your income.

## Costs you will pay: deposit, mortgage, rent, service charges and ground rent

The deposit saving is the headline benefit, and the numbers make the case clearly.

**Pro Tip:** _Ask the provider for the last three years of service charge accounts before you offer. A sudden jump often signals major works are coming, which matters far more than the headline rent figure._

On a £300,000 property, a [10%](https://www.plumlife.co.uk/blog/is-shared-ownership-cheaper-than-buying-a-home-outright/) deposit on a full purchase means finding £30,000 upfront. Buy a [40%](https://www.guinnesshomes.co.uk/blog/shared-ownership/deposits-for-shared-ownership-how-much-do-you-need/) share instead and that same 10% deposit rate applies only to £120,000, meaning a deposit of £12,000, an £18,000 difference that often decides whether a buyer can move at all.

Your monthly outgoings combine several elements:

-   **Mortgage repayments** on the share you've bought. 
-   **Rent** to the provider on the unbought share, commonly [set at around 2.75%–3% a year of its value](https://calchub.uk/blog/ftb-shared-ownership-guide-2026/). 
-   **Service charges**, which vary widely depending on the building and its amenities. 
-   **Ground rent**, though many newer leases reduce or remove this. 

Rent reviews and rising service charges can erode the affordability advantage over time, so budget for increases rather than assuming today's figures hold for the life of the lease.

## Staircasing, selling and long-term exit implications

Staircasing means buying further shares in your home once you're settled, gradually increasing your ownership stake.

1\. **Check your increment rules.** Leases granted under the Affordable Homes Programme 2021 to 2026 often allow staircasing in 1% steps, while older leases frequently require larger 10% tranches. 2. **Get a formal valuation.** The provider commissions an independent valuation to set the price of each new tranche, and you cover that valuation fee. 3. **Reach 100% where possible.** Once you own the property outright, rent stops, though ground rent or other lease obligations may still apply depending on the terms. 4. **Plan ahead for resale.** Selling before staircasing to 100% usually means the provider has a right to find a buyer first through their nomination period, which can add weeks to a sale.

## Pros and cons: when shared ownership is worth it

The scheme suits some buyers far better than others, and the trade-offs are worth weighing honestly rather than glossing over.

**Advantages:**

-   A significantly lower deposit barrier than buying outright. 
-   A realistic route from renting into homeownership. 
-   The chance to build equity through staircasing as income grows. 

**Disadvantages:**

-   Rent and service charges continue indefinitely until you staircase. 
-   Combined monthly costs can rival or exceed a standard mortgage on an equivalent home. 
-   Resale can be slower due to provider nomination rights and buyer pool restrictions. 

**Pro Tip:** _If you're not planning to stay in the area for at least five years, weigh the staircasing costs and resale friction carefully; shared ownership rewards buyers who settle in and build their share steadily._ Shared ownership tends to suit buyers who intend to stay put and staircase over several years, rather than those wanting maximum flexibility, [according to the HomeOwners Alliance](https://hoa.org.uk/advice/guides-for-homeowners/i-am-buying/shared-ownership-what-to-watch-out-for/).

## Why a specialist conveyancer matters for shared ownership

Shared ownership transactions run on model leases and provider consents that differ meaningfully from a standard freehold or leasehold purchase, and getting these wrong causes real delays.

A conveyancer experienced in this scheme handles:

-   Reviewing the specific model lease terms and any restrictions on subletting or alterations. 
-   Preparing and checking staircasing deeds when you buy further shares. 
-   Obtaining the provider's formal consents at each stage of the transaction. 
-   Checking service charge history and any pending major works. 

GOV.UK guidance for lenders, landlords and conveyancers stresses close coordination between all three parties precisely because these leases carry extra steps a standard purchase doesn't. Conveyancing-solicitor matches buyers with SRA- or CLC-regulated firms experienced in shared ownership work, so the right questions get asked before you exchange.

## What should you do next as a prospective buyer?

Run the combined monthly figure first: mortgage, rent, and service charge together, not just the mortgage alone. Then speak to a mortgage adviser who understands shared ownership lending, and instruct a conveyancer with genuine experience in the scheme. Ask the provider for the lease, service charge history, and staircasing terms before you commit to anything.

## How Conveyancing-Solicitor.co.uk can help

Once you've found a shared ownership property and had an offer accepted, the next move is instructing a conveyancer who actually understands provider consents and staircasing deeds, not a generalist learning on the job. Conveyancing-solicitor connects you with five-star, SRA- or CLC-regulated firms across the UK and provides [instant fixed-fee quotes](/how-to-get-an-instant-conveyancing-quote-online) that can save up to 75% against standard legal fees, with full transparency on costs from the outset.

There's no need to ring round firms individually or guess at pricing. Get your [instant conveyancing quote](/instant-quote) today and get matched with a vetted specialist who has handled shared ownership transactions before, so your purchase moves without the delays that catch out buyers using an inexperienced firm.

## Sources

PS 

### About the Author

Verified Expert

#### PJ Singh

Co-Founder, Conveyancer Plus | Conveyancing Industry Expert

BSc Computer Science, University of Hertfordshire | 10+ Years Conveyancing Industry Experience

PJ Singh is Co-Founder of Conveyancer Plus, bringing over 10 years of expertise in the UK conveyancing and property sector. Previously Group Director of Sales and Marketing at Ackroyd Legal and Head of Business Development at Fitzalan Partners (Homeward Legal), PJ has worked with over 70 SRA-regulated solicitors nationwide. His deep understanding of the property transaction process and client journey makes him a trusted voice in simplifying conveyancing for homebuyers.

[View all articles by PJ →](/our-editors/pj-singh)[LinkedIn](https://www.linkedin.com/in/pj--singh/)

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