Reducing Capital Gains Tax on Mixed-Use Commercial Property: What to Get Right When You Buy

Mixed-use high-street property with a ground-floor shop and residential upper floors

Unpublished draft

Capital Gains Tax (CGT) is a tax on disposal, not purchase. Buying a mixed-use property does not itself trigger CGT.

However, decisions made when you buy can affect the size of a future gain and the tax due when you sell. This article focuses on what investors can do at acquisition so that the eventual exit is properly structured, documented and reviewed.

It does not describe a way to avoid tax. Tax rules apply according to the facts, the ownership structure and the transaction. Obtain independent advice before acting.

Summary of the main points

Buying property does not trigger CGT, but acquisition decisions affect the future calculation.
Choose the ownership vehicle before exchange. Changing it later can create a disposal and a tax charge.
Record the purchase price, acquisition costs and enhancement expenditure.
Support the commercial and residential apportionment with valuation evidence.
Understand that capital allowances can reduce tax on income while increasing the eventual gain.
Consider separate titles or pension ownership only where the legal, planning and tax position supports them.
Current rates and allowances must be checked before any transaction or disposal.

Property documents, plans and invoices prepared for a mixed-use investment review

CGT rates for 2026/27

For 2026/27, CGT on most gains made by individuals is charged at:

18% for gains falling within the unused basic-rate Income Tax band.
24% for gains above that band, including gains made by higher- and additional-rate taxpayers.
£3,000 annual exempt amount for individuals.

The rates also apply to most non-residential and mixed-use property gains. Since 30 October 2024, the rates for non-residential property have been aligned with residential property at 18% and 24%. The historic assumption that commercial property has a lower CGT rate than residential property is therefore generally outdated.

Trustees and personal representatives generally pay CGT at 24%. Rates and allowances can change and must be checked at the time of disposal.

The annual exempt amount is small compared with many property gains. It should not be treated as the main part of a property tax strategy.

1. Choose the ownership vehicle before buying

The main options may include:

Personal ownership.
A limited company.
An LLP.
A registered pension scheme, where the rules permit the investment.

The decision should be made before exchange. Transferring a property later to a company, LLP or pension scheme can be treated as a disposal or otherwise create tax, legal, valuation and financing consequences.

Structure	Who pays tax on a gain?	Headline rate or treatment	Annual exempt amount	Main advantage	Main drawback
Personal ownership	The individual	Usually 18% or 24% CGT	£3,000 per individual	Simple ownership and direct access to proceeds	Personal tax exposure; limited ability to retain profits
Limited company	The company	Corporation Tax on chargeable gains; rate depends on the company’s circumstances	Not generally available	May support retained profits and reinvestment	Extracting proceeds can create further tax
LLP	Usually the members	Gains generally allocated to members and taxed according to their circumstances	May be available to individual members, subject to the facts	Flexible commercial structure	Tax and profit-sharing arrangements require careful drafting
Registered pension scheme	The scheme	Qualifying property gains are generally exempt from CGT within the scheme	Not relevant where gains are exempt	Potentially tax-efficient long-term ownership	Strict rules, restricted access and borrowing limits; residential property is generally prohibited

A company’s headline tax rate is not the complete answer. Corporation Tax may apply to the gain, followed by further tax when funds are extracted. An LLP is not automatically tax-free. Pension ownership is not suitable for every investor or every property.

2. Establish the base cost

The base cost is normally the purchase price plus allowable acquisition costs. Depending on the facts, this can include:

Stamp Duty Land Tax.
Legal and conveyancing fees.
Survey and valuation fees.
Agent fees.
Other directly related acquisition costs.

Keep the contracts, completion statements, invoices and payment evidence. Missing or undocumented costs may not be available when the gain is calculated. HMRC expects investors to retain records supporting the figures used.

3. Separate improvements from repairs

Capital improvements and enhancement expenditure may be added to the base cost when calculating a gain. Examples could include a qualifying extension or a material improvement that increases the asset’s value.

Repairs and maintenance are normally dealt with against rental income rather than being added to the CGT base cost. The classification depends on the work and the circumstances.

Keep separate records for:

Repairs.
Maintenance.
Replacement items.
Structural improvements.
Extensions and alterations.
Professional fees connected with capital works.

A single ledger for all property expenditure can make it difficult to claim the correct treatment later.

4. Evidence the commercial and residential split

A shop-and-upper property is not treated as purely commercial or purely residential for every tax purpose. The commercial ground floor and residential upper floors may attract different reliefs, allowances, rates and reporting obligations.

The apportionment can affect:

The CGT calculation.
Capital allowances.
SDLT analysis.
Business rates and council tax.
Mortgage and insurance arrangements.
Future reporting obligations.

Do not use an arbitrary percentage. Obtain a valuation or other appropriate evidence and document the method used. The division should reflect the property, its use and the relevant date.

Planning restrictions, restrictive covenants, lease terms and separate access arrangements may prevent a proposed split or change of use. A tax structure has limited value if the title and planning position do not support it.

5. Understand the capital allowances trade-off

Capital allowances may be available on qualifying fixtures, plant and machinery and, in some cases, structures and buildings used for qualifying non-residential purposes.

A claim can reduce tax on income during the holding period. However, claiming allowances can also reduce the CGT base cost of qualifying expenditure. This may increase the gain on a later disposal.

Hypothetical illustration, not advice or a forecast:

Assume £80,000 of qualifying expenditure is claimed as capital allowances.
Assume this reduces the relevant base cost by £80,000.
At a 24% CGT rate, the later tax increase could be up to approximately £19,200.
The earlier income tax relief may have been obtained at a higher or lower marginal rate.

This is a timing and rate comparison, not a guaranteed saving or loss. Review the expected hold period, income tax position and exit plan before claiming.

On a second-hand acquisition, a valid Section 198 election may be required for fixtures. This article does not repeat the separate rules on capital allowances or Section 198 elections. Specialist advice should confirm the position before completion.

Surveyor checking the separate entrances and external layout of a mixed-use property

6. Consider separate titles carefully

Separate titles may allow the commercial and residential elements to be dealt with independently. They may also permit separate disposals in different tax years or support pension ownership of the qualifying commercial element.

The benefit is not automatic. Legal work, valuation fees, Land Registry costs, planning work, lender consent and management arrangements can exceed any tax benefit.

A split should be considered only after checking:

Title restrictions and rights of way.
Planning permissions and use classes.
Fire separation and building compliance.
Lease and service charge arrangements.
Finance and lender requirements.
Whether the market would value the parts separately.

7. Use tax years only where the structure supports it

Selling separately titled elements in different tax years may allow an investor to use the annual exempt amount more than once. It may also allow some gains to fall within the basic-rate band in each year.

Hypothetical illustration, not advice or a forecast:

Total gain: £200,000.
Sold as £100,000 in year one and £100,000 in year two.
Each year: £100,000 less £3,000 annual exempt amount = £97,000 taxable gain.
At 24%: £23,280 per year.
Two-year total: £46,560.

Compared with a single disposal at 24% after one £3,000 exemption, the illustrative saving is approximately £720. For a higher-rate taxpayer, this is modest. For a basic-rate taxpayer, the basic-rate band may also be used twice, but the result depends on income and other gains.

Legal, valuation and registration costs could exceed the saving.

8. Consider pension ownership of the commercial element

A registered pension scheme can generally hold qualifying commercial property. Gains and rental income within the scheme are generally exempt from CGT and Income Tax, subject to the pension rules.

Direct ownership of residential property by a SSAS or SIPP is generally prohibited. Borrowing is restricted and transactions with connected parties require care. Pension ownership also limits personal access to the asset and its proceeds.

If a property contains a shop and residential uppers, only the qualifying commercial element may be suitable. This is one reason title splitting can be considered, but the split must work legally, commercially and operationally.

Pension advice is essential. This is a regulated and technical area, not a general tax shortcut.

9. Plan the exit when you buy

Before exchange, consider whether the expected exit is:

A sale of the whole building.
Separate sales of the shop and upper floors.
A long-term hold.
A refinance.
A transfer to a company.
A later transfer of the commercial element to a pension scheme.

The intended exit can influence the ownership vehicle, title structure, lease terms, improvement programme and record-keeping from the first day of ownership.

10. Review succession and lifetime planning

Gifts, transfers between spouses or civil partners and holdover relief have separate conditions. They can also interact with Inheritance Tax and other areas of estate planning.

No transfer should be presented as a guaranteed saving. Obtain advice that covers CGT, Inheritance Tax, legal ownership, funding and the commercial purpose of the arrangement.

Common traps

Assuming commercial property still has a lower CGT rate than residential property.
Assuming Business Asset Disposal Relief applies to a let property.
Buying personally and later wanting company or pension ownership.
Failing to record enhancement expenditure at the time.
Claiming capital allowances without understanding the base-cost effect.
Apportioning a mixed-use price without valuation evidence.
Missing a 60-day reporting and payment deadline where the residential element brings the disposal within the relevant regime.
Ignoring Inheritance Tax, which is separate from CGT.
Relying on late or artificial arrangements.
Assuming tax planning overrides planning, title or covenant restrictions.
Relying on advice from someone who has a financial interest in the recommended structure.

Business Asset Disposal Relief is an exception that must be tested, not a standard property-investment route. For 2026/27, the rate is 18% for qualifying disposals, subject to a £1 million lifetime limit. It generally requires a trading business or trading company. Property letting is generally treated as investment rather than trading, so BADR is often unavailable for a let mixed-use property.

Investors’ Relief applies to qualifying unlisted shares, not direct property ownership. Furnished holiday letting rules and trading status are technical and require specific advice.

Non-resident disposals of UK property, including non-residential property since April 2019, fall within the non-resident CGT regime. International investors should obtain advice before buying or selling.

UK residential property disposals generally require reporting and payment within 60 days of completion. A mixed-use disposal may require confirmation of the position where it includes a residential element. Review the GOV.UK guidance on reporting and paying CGT on UK property.

The Four Pillars still apply

Tax planning sits on top of the property fundamentals:

Lease structures.
Planning permissions.
Building condition.
Operational compliance.

A tax-efficient structure cannot rescue a property with poor leases, no planning, material defects or compliance failures. Review these matters through a structured property investment approach and contact support@realtypackaging.co.uk before relying on a proposed tax outcome.

Investor action plan

Decide the ownership vehicle before exchange.
Obtain tax advice before committing to personal, company, LLP or pension ownership.
Obtain a valuation and document the commercial and residential apportionment.
Keep a permanent record of the purchase price, SDLT, legal, survey, valuation and agent fees.
Keep enhancement expenditure separate from repairs, with invoices and evidence.
Review capital allowances against the expected hold period and exit.
Confirm that title and planning support any proposed split, conversion or change of use.
Review residential reporting and payment obligations before completing a sale.
Test whether separate titles and staged disposals justify their costs.
Consider pension ownership of the commercial element only where the rules and objectives permit.
Review the position annually, not only at sale.
Document the commercial purpose of each arrangement and avoid structures whose only purpose is tax reduction.

Tax evasion is illegal. Realty Packaging does not assist with tax evasion or artificial arrangements. Investors should obtain advice from an appropriately qualified tax adviser before acting.

Disclaimer: This article is for information only. It is not tax, legal, financial, pension, valuation, planning or investment advice. It is not an offer, valuation or recommendation. Returns and tax outcomes are not guaranteed. Tax rules, rates and allowances change and depend on individual circumstances. Independent professional advice is essential.