Co-Ownership in Northern Ireland: How the Scheme Works

Co-Ownership Housing is Northern Ireland's shared ownership scheme, operated by Co-Ownership Housing Association. It is designed to help people who cannot afford to buy a home outright, by allowing them to purchase a share of a property while paying subsidised rent on the remaining share held by Co-Ownership.

It is a genuine pathway to home ownership for buyers who meet the criteria, and it has helped tens of thousands of people in Northern Ireland onto the property ladder since its establishment in the 1970s.

How it works

You purchase a minimum 50% share of the property you want to buy. Co-Ownership retains the remaining share, up to 50%. You pay a mortgage on your share and a monthly rent to Co-Ownership on their share. The rent is set at a rate below market value and is reviewed periodically.

You can buy between 50% and 90% of the property at the outset, depending on what you can afford. The more you can buy initially, the lower the rent payment on Co-Ownership's share.

Over time, you can buy additional shares in the property, a process called staircasing, until you own 100% outright. Most Co-Ownership buyers aim to staircase to full ownership when their income and savings allow.

The property price cap

Co-Ownership applies a price cap of £210,000. This means the scheme is available only for properties purchased at or below this figure. The cap applies to the full property value, not just the share you are buying.

In practice, this covers a significant portion of the Northern Ireland housing market, particularly in the areas north of Belfast, north Antrim, and the commuter belt. Properties in prime South Belfast, upper Malone, or higher-demand North Coast locations often exceed the cap, limiting Co-Ownership's availability in those markets.

For buyers looking in Newtownabbey, Antrim, Ballyclare, Larne, Carrickfergus, and many parts of the North Coast, the £210,000 cap covers a reasonable range of property choices.

Eligibility criteria

To qualify for Co-Ownership, you must:

• Not currently own a property (you must have sold any existing property or be in the process of doing so)
• Have a household income within the scheme's limits (the income cap is periodically reviewed; check the current figure at the time of application)
• Be unable to afford a full purchase of a suitable property without the scheme's assistance
• Have a good credit history and be able to demonstrate ability to service the mortgage and rent

Co-Ownership is not exclusively for first-time buyers. Existing homeowners who have sold their property and cannot afford a suitable replacement property outright can also apply in some circumstances.

The mortgage side

You take out a standard residential mortgage on your share of the property. Because you are only mortgaging a proportion of the total value, the loan amount is lower than it would be for a full purchase, which reduces both the deposit required and the monthly mortgage payment.

AIB (NI) has partnered with Co-Ownership to offer a no-deposit mortgage for qualifying Co-Ownership applicants, making the scheme accessible without any upfront savings beyond the costs associated with purchasing. Other lenders also offer mortgage products for Co-Ownership buyers, and a broker familiar with the NI Co-Ownership market will know which products are currently available.

Monthly costs

Your total monthly outgoing on a Co-Ownership property has two components:

• Mortgage payment: on the share you own, at whatever rate you have secured
• Rent: to Co-Ownership on their share; this is subsidised below market rent but does increase over time

The combined monthly cost is typically lower than the full mortgage payment would be on an equivalent property, which is the scheme's primary financial advantage. The trade-off is that you are not building equity on the portion you do not own until you staircase.

Staircasing: buying out additional shares

At any point after your initial purchase, you can buy additional shares in 10% increments from Co-Ownership, at the current market value at the time of purchase. Each additional share you buy reduces your rent payment proportionally.

The timing of staircasing is a financial decision. If the property has increased in value since you bought in, you pay more for subsequent shares. If the market is static or has fallen, subsequent shares are available at lower cost. Many Co-Ownership buyers staircase when they receive a salary increase, receive a lump sum (inheritance, bonus, or other windfall), or remortgage at a lower rate that frees up monthly capacity.

Buying through Co-Ownership: the process

You identify a property you want to buy within the price cap, confirm it meets Co-Ownership's requirements, and submit an application. Co-Ownership assesses your eligibility and the property. If approved, Co-Ownership commissions their own valuation of the property.

The legal process then follows the standard Northern Ireland conveyancing route, with the added complexity of Co-Ownership's legal requirements being handled by your solicitor alongside the standard buyer protections. The additional legal work adds some time and cost compared to a standard purchase; your solicitor will advise on the specific charges.

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Considering Co-Ownership for a property in the Newtownabbey, Antrim, or Ballyclare area? We work with Co-Ownership buyers and can advise on which properties in our area fall within the scheme criteria. Get in touch.