Shared Ownership UK — Lease Structure, Staircasing, SDLT, Lease Extension, and Building Safety

The Shared Ownership Lease — Structure and Key Terms

A shared ownership lease is a long lease (typically 99-125 years, or 999 years for homes under the new model lease introduced from 2021) granted by a housing association (or other registered provider) to the shared owner. Key features: (a) The shared owner's interest: the shared owner holds a long leasehold interest in the property and owns the percentage of the property they have purchased ('the share'); the beneficial ownership of the whole property is held on trust, with the shared owner's interest proportionate to their percentage; the percentage can be increased by staircasing (see below); (b) The rent element: the shared owner pays rent to the housing association on the unsold share; the rent is typically reviewed annually (in line with CPI or RPI plus 0.5%); the rent is not a 'ground rent' — it is a genuine rack-rent payable on the unsold percentage; (c) The service charge: the shared owner pays a full service charge regardless of their percentage share; the service charge is not apportioned by reference to the percentage owned — a 25% shared owner pays the same service charge as a 100% owner; (d) Repair obligations: the shared owner is typically responsible for all internal repairs and maintenance; the housing association retains responsibility for structural and external works through the service charge; (e) Restrictions on subletting: shared ownership leases contain restrictions on subletting; in most cases the shared owner cannot sublet until they own 100%; shared ownership subletting rules are governed by the specific lease terms and social housing regulatory guidance; (f) The new model shared ownership lease (2021): from April 2021, new shared ownership properties are offered on the new model shared ownership lease (NMSO lease) introduced by Homes England; the NMSO lease permits minimum staircasing tranches of 1% (down from 10% under the old model); provides for free repairs in the first 10 years of ownership (landlord responsible for repairs in the first 10 years under the initial repair period obligation); and extends the lease from 125 to 999 years.

• Long leasehold: 99-125 years (old model) or 999 years (new model 2021 NMSO lease); shared owner holds both the lease and the beneficial interest in their percentage share
• Rent on unsold share: rack-rent on the remaining percentage not purchased; reviewed annually (CPI/RPI + 0.5%); not a ground rent
• Full service charge: shared owner pays the full service charge regardless of percentage owned; service charge is not apportioned to the percentage share
• Subletting restrictions: most shared ownership leases prohibit subletting until the shared owner owns 100%; verify the lease terms before agreeing to sublet
• New model lease (2021): 999-year term; 1% minimum staircase tranches; 10-year initial repair period; introduced for all new Homes England-funded shared ownership homes from April 2021

Staircasing — Buying Additional Shares and Reaching 100%

Staircasing is the process by which a shared owner purchases additional shares in their property to increase their ownership percentage, ultimately reaching 100% (outright ownership). The mechanics: (a) Staircasing under the old model lease: most older shared ownership leases allow staircasing in tranches of 10% or more; the shared owner buys the additional share at its current market value (not the value at the time of purchase); a RICS-registered valuer carries out the valuation at the time of staircasing; each staircasing transaction is a separate SDLT transaction; (b) Staircasing under the new model lease (NMSO): from April 2021, new model leases permit 'gradual staircasing' in tranches of as little as 1%; this makes staircasing more affordable in smaller increments; the annual valuation cost is eliminated for gradual staircasing transactions under the NMSO; (c) Final staircasing to 100%: once the shared owner reaches 100%, the rent element ceases entirely; the shared owner holds the property outright on the long lease; they may wish to apply for a freehold acquisition (if the property is a house) under the Leasehold Reform Act 1967; (d) Reverse staircasing: the shared ownership lease does not generally permit the shared owner to 'sell back' a share to the housing association (reducing their percentage); voluntary resale of the property is the mechanism for exiting; (e) Selling a shared ownership property: on resale, the housing association typically has a nomination period (4-8 weeks) in which to find another shared ownership purchaser for the property; if no buyer is found in the nomination period, the shared owner can sell on the open market to any buyer (who must be eligible for shared ownership and approved by the housing association if the property falls within a local authority restriction area).

• Staircasing: buying additional percentage shares at current market value (RICS valuation at time of staircase); each transaction is a separate SDLT event
• Old model: minimum 10% tranches; new model NMSO (from April 2021): minimum 1% tranches — makes incremental staircasing more affordable
• Final staircase to 100%: rent element ceases on reaching 100%; house owners may apply for freehold acquisition under LRA 1967
• Nomination period: housing association typically has 4-8 weeks to find another shared ownership buyer before the owner can sell on the open market
• Reverse staircasing not available: shared owners cannot reduce their percentage; resale of the property is the exit mechanism

SDLT on Shared Ownership — Initial Purchase and Staircasing

The SDLT treatment of shared ownership is a specialist area with two distinct approaches available on the initial purchase: (a) The market value election: the purchaser can elect to pay SDLT on the full market value of the property (treating it as if they had purchased 100% outright); this method pays all future SDLT liability upfront; no further SDLT is payable on any staircasing transactions (up to and including the final staircase to 100%); advantageous where the purchaser expects to staircase to 100% in a period where the property value and SDLT rates are likely to increase; (b) The staged approach: the purchaser pays SDLT on the premium (the amount paid for the initial share) only at the time of purchase; the lease element also creates a potential SDLT charge on the net present value of the rent payments — but this is typically nil or low because the lease rent (on the unsold share) falls below the residential zero-threshold; on each subsequent staircasing transaction, SDLT is payable on the value of the additional share purchased; the 3% (or 5% from October 2024) SDLT surcharge for additional dwellings applies to staircasing transactions if the buyer already owns another residential property; (c) SDLT on the final staircase to 100%: where the staged approach has been used, SDLT is payable on the value of the final share purchased to reach 100%; this payment, when aggregated with all previous staircasing payments, may trigger the higher SDLT rates on the cumulative consideration; (d) First-time buyer relief and shared ownership: from 22 November 2017, first-time buyers purchasing a shared ownership property can claim first-time buyer SDLT relief on the initial purchase; the relief applies to the market value election or the staged approach; for properties up to £500,000 (England and Northern Ireland), no SDLT is payable on the first £425,000 (from September 2022); for properties above £500,000 the relief is unavailable entirely.

• Market value election: pay SDLT on 100% market value upfront; no SDLT on future staircasing; advantageous if expecting to staircase quickly in a rising market
• Staged approach: SDLT on initial share only; SDLT payable on each staircasing transaction at current market value; lower initial cost
• 3% (now 5%) surcharge on staircasing: if the buyer already owns another property, the surcharge applies to each staircasing purchase above certain thresholds
• First-time buyer relief: available on initial shared ownership purchase (market value or staged); up to £500,000 property value; nil SDLT on first £425,000 (from September 2022)
• Cumulative SDLT on final staircase: where staged approach used, the final staircase consideration is linked to all prior staircasing payments — may push total into higher SDLT bands

Lease Extension and Building Safety Act Protections for Shared Owners

Two recent statutory reforms have significantly improved the legal position of shared owners: (a) Statutory lease extension under the Leasehold and Freehold Reform Act 2024: before the LFRRA 2024, shared owners had no statutory right to extend their lease under the Leasehold Reform, Housing and Urban Development Act 1993 (LRHUDA 1993) — the 1993 Act excluded shared ownership leases from the statutory extension regime; LFRRA 2024 s.59 extends the statutory lease extension right to shared owners; the right allows shared owners to extend their lease by 990 years at zero ground rent; the premium payable for the extension is calculated on the existing ownership percentage (not 100%); the commencement date of the LFRRA 2024 provisions is to be confirmed — some provisions were commenced in late 2024, but the core leasehold reform provisions (including shared ownership extension rights) require secondary legislation to commence; (b) Building Safety Act 2022 protections — extension to shared owners: when the BSA 2022 was enacted, the Schedule 8 leaseholder protections applied to 'qualifying leaseholders' who owned a dwelling outright; shared owners (who own a percentage rather than 100%) were initially excluded from the qualifying leaseholder definition; the Building Safety (Leaseholder Protections) (Amendment) (England) Regulations 2023 (SI 2023/747) amended the definition of 'qualifying leaseholder' from 5 July 2023 to include shared owners; shared owners are treated as if they own 100% of their dwelling for the purpose of the Schedule 8 qualifying tests — including the 'no more than 3 UK properties' test; cladding remediation costs cannot be charged to qualifying shared owners; the non-cladding service charge cap (£10,000/£15,000) applies to qualifying shared owners in relevant buildings where the landlord is below the £2m threshold; (c) Enfranchisement for shared ownership houses: shared owners of houses can apply to purchase the freehold under the Leasehold Reform Act 1967 once they have staircased to 100%; prior to staircasing to 100%, the shared ownership lease restricts freehold acquisition rights; (d) Service charge disputes: shared owners (as leaseholders) have the full range of rights under LTA 1985 to challenge service charges in the First-tier Tribunal; the shared owner's obligation to pay the full service charge (regardless of percentage) creates particular scrutiny of the reasonableness of service charge demands.

• LFRRA 2024 lease extension right: shared owners gain statutory right to extend lease by 990 years at zero ground rent; premium calculated on their ownership percentage; commencement date to be confirmed
• BSA 2022 protections from 5 July 2023: Building Safety (Leaseholder Protections) (Amendment) Regulations 2023 extended Schedule 8 cladding and non-cladding protections to shared owners
• Shared owner = 100% for qualifying leaseholder tests: assessed as if owning 100% regardless of actual percentage; enables full access to Schedule 8 protections
• Cladding cost protection: cladding remediation costs cannot be charged to qualifying shared owners in relevant buildings — same protection as outright leaseholders
• Service charge disputes: shared owners have LTA 1985 rights to challenge unreasonable service charges at the First-tier Tribunal regardless of their ownership percentage

Frequently asked questions