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Shared Ownership Calculator

Calculate monthly costs for shared ownership including mortgage, rent on unsold share, service charge, and ground rent. Plan your staircasing costs.

Property Details

Enter the full market value of the property and your share percentage

Full Property ValueThe full open market value of the property. This is the price you would pay if buying 100% outright.

Share to PurchaseThe percentage of the property you wish to buy. Shared ownership typically starts at 25% and can go up to 75% initially. You can staircase to 100% later.

Property TypeThe type of property you are purchasing. Flats and houses may have different service charge and ground rent structures.

Your share value

£150,000.00

50% of £300,000.00

Mortgage Details

Enter your mortgage terms for the share portion you are purchasing

Mortgage Interest RateThe annual interest rate on your mortgage. This is for the share portion only. Typical rates for shared ownership are 4-7% depending on the lender and your credit score.

Mortgage TermThe length of your mortgage in years. Shared ownership mortgages are typically 25 years but can be up to 35-40 years with some lenders.

years

Deposit AmountYour cash deposit for the share portion. This is typically 5-10% of the share value. A larger deposit means a smaller mortgage and lower monthly payments.

Mortgage required

£135,000.00

Share value £150,000.00 - Deposit £15,000.00

Monthly Costs

Enter your rent on the unsold share and any additional monthly charges

Rent on Unsold ShareThe monthly rent you pay on the share of the property you don't own. This is typically set at 2.75% of the unsold share value per year, though some housing associations charge more.

Per month

Service ChargeMonthly service charge for building maintenance, communal areas, and any included amenities. This is paid to the housing association regardless of your ownership share.

Per month

Ground RentMonthly ground rent for the land the property stands on. For houses this is common, for flats it may be included in the service charge or be a peppercorn rent (£0).

Per month