UK Property Investment Glossary

A court process (formerly used with Section 21 notices) that allowed possession without a hearing in uncontested cases. Following Section 21 abolition under the Renters Rights Act 2025, all possession now requires a Section 8 notice and a court hearing.

A lender's indication that they would be willing to lend a specified amount, subject to full application and valuation. An AIP is not a formal mortgage offer but confirms borrowing capacity before making an offer on a property.

The total yearly cost of borrowing, including interest and fees, expressed as a percentage. For mortgage comparison, APR provides a more complete picture than the headline rate alone — but for BTL mortgages, most investors focus on the monthly payment and ICR impact rather than APR.

A planning direction made by a local council that removes the permitted development right to convert a dwelling house (C3) to a small HMO (C4) without full planning permission. Landlords must apply for planning permission before converting in Article 4 areas. Common in university cities with high HMO concentrations.

The most common form of residential tenancy in England and Wales. Under the Renters Rights Act 2025, new fixed-term ASTs are abolished — all new tenancies are periodic from day one. Existing fixed-term ASTs continue until natural expiry then convert to periodic.

A provision under the Renters Rights Act 2025 (named after Awaab Ishak) requiring landlords to investigate reported health hazards within 14 days, begin remedial works within 7 days of completing the investigation, and complete works within a reasonable time. Primarily targets damp and mould.

A property purchased at a price below its current market value — typically achieved through distressed sales, motivated sellers, or off-market deals. BMV purchases are a core part of the BRRR strategy, as the discount creates instant equity and improves refinancing outcomes.

Short-term secured borrowing (typically 3–18 months) used to fund property purchases that cannot wait for standard mortgage timescales — often used for auction purchases, unmortgageable properties requiring renovation, or chain-break situations. Interest rates are significantly higher than BTL mortgages (typically 0.7–1.2%/month). Always have a clear exit strategy before taking bridging finance.

Buy, Refurbish, Refinance, Rent — a property investment strategy where a property is purchased (often below market value), improved through renovation, refinanced at the higher post-renovation valuation to release capital, then let. The goal is to recycle the original deposit into the next acquisition.

A property purchased specifically to generate rental income — as opposed to owner-occupation. BTL properties require specialist BTL mortgages, are subject to the 5% additional dwelling SDLT surcharge (raised from 3% on 31 October 2024), and have specific tax treatment including Section 24 mortgage interest relief restriction for personal-name landlords.

The increase in a property's value over time. One of the two return components for property investors (alongside rental income). UK residential property has historically appreciated at approximately 3–5% per year in nominal terms over the long run, with significant variation by location and period.

Tax on the profit made when selling an asset that has increased in value. For residential property sold by UK individuals, CGT rates are 18% (basic rate) or 24% (higher rate) on the gain, after deducting the annual exempt amount. Must be reported and paid within 60 days of completion.

Annual net cash flow divided by total cash invested, expressed as a percentage. A more useful measure than gross yield because it accounts for financing costs and actual cash deployed. Target: 6%+ for a standard single-let; 10%+ for a well-performing HMO at 75% LTV.

Tax paid by limited companies on their profits. For limited company property investors (SPVs), corporation tax (19–25%) applies to rental profits, with mortgage interest fully deductible. Typically more tax-efficient than income tax for higher-rate taxpayers, though dividend extraction adds a further tax layer.

A legal document recording how a jointly-owned property is held between two or more people — either as joint tenants (equal shares, right of survivorship) or tenants in common (specified shares). Used by couples where one partner pays basic rate and the other higher rate to allocate a larger rental income share to the lower-rate taxpayer.

One of three government-approved schemes (DPS, MyDeposits, TDS) in which landlords must register tenant deposits within 30 days of receipt. Protects tenants' deposits and provides an adjudication service for end-of-tenancy disputes. Failure to protect carries penalties of up to 3× the deposit amount.

A mortgage product where the rate is set at a fixed discount below the lender's Standard Variable Rate (SVR). Unlike a tracker, the rate does not follow the base rate directly — it follows the SVR, which the lender can adjust at their discretion. Generally less popular than fixed or tracker products for BTL.

A penalty charged by a lender when a mortgage is repaid before the end of the agreed fixed or discounted period. Typically 1–5% of the outstanding loan balance, decreasing over the product term. Must be weighed against the benefit of refinancing or selling before the product expires naturally.

A certificate rating a property's energy efficiency from A (most efficient) to G (least efficient). Landlords must have a valid EPC (10-year validity) for all rental properties. Current minimum standard is E; a minimum of C is expected to be required for new tenancies later in the 2020s.

For property investors: refinancing a mortgaged property at a higher loan amount to extract the equity created by appreciation. The released cash is a loan — not income — and can be deployed as a deposit on a new property. Not to be confused with equity release lifetime mortgage products for homeowners aged 55+.

The normal deterioration of a property through everyday use over time — faded paint, worn carpet in high-traffic areas, minor scuffs. Landlords cannot deduct the cost of fair wear and tear from a tenant's deposit. Only damage beyond fair wear and tear — and damage caused by the tenant — can be deducted.

A mortgage product where the interest rate is fixed for a specified period — typically 2 or 5 years for BTL mortgages. After the fixed period, the rate reverts to the lender's Standard Variable Rate unless the borrower remortgages. Provides payment certainty but carries ERCs if repaid early.

Outright ownership of a property and the land it stands on, with no time limit. The alternative to leasehold. Most houses are freehold; most flats are leasehold. For BTL investment, freehold is generally preferable — leasehold adds service charges, ground rent, and lease length management complexity.

The total market value of a property after development or refurbishment is complete. Used in BRRR and flip calculations to establish the uplift created by renovation works and therefore the potential refinancing amount or sale price.

Annual rent divided by purchase price, expressed as a percentage. The starting filter for BTL investment analysis — a gross yield below 5.5% is unlikely to be cash-flow positive at current mortgage rates. Does not account for running costs, mortgage payments, or voids.

An annual charge paid by a leaseholder to the freeholder. The Leasehold Reform (Ground Rent) Act 2022 prohibited new leases from including ground rent (beyond a nominal £0 peppercorn rent). Existing leases with ground rent still carry this cost — check lease terms carefully before purchasing a leasehold BTL.

A property occupied by 3 or more people from more than one household who share facilities (kitchen, bathroom). Mandatory HMO licensing applies to properties with 5 or more occupants from 2 or more households in England. HMOs typically achieve gross yields of 9–14% and require specific mortgage products and fire safety compliance.

A payment made by a prospective tenant to reserve a property while referencing is completed. Capped at one week's rent under the Tenant Fees Act 2019. Must be returned if the tenancy proceeds; may be retained if the tenant withdraws after passing referencing or provides false information.

The key BTL mortgage affordability test. Monthly rent divided by stressed monthly interest (calculated at typically 5.5%), expressed as a percentage. Lenders require 125% for basic-rate taxpayers and limited companies; 145% for higher-rate taxpayers buying in personal name. A property that fails ICR cannot be mortgaged at that loan-to-value.

A mortgage where the monthly payment covers only interest — the capital balance remains constant throughout the term and must be repaid at the end (typically through property sale or refinancing). Standard for BTL investment because it maximises monthly cash flow. Contrast with repayment mortgages where capital is progressively paid down.

A form of property co-ownership where all owners hold an equal, undivided share and the right of survivorship applies (a deceased owner's share passes automatically to the survivor). Distinct from tenants in common. Also used informally to describe a tenancy with multiple named tenants — where all tenants are jointly and severally liable for rent.

Legislation that sets out landlords' repair obligations for residential tenancies — requiring the property to be fit for human habitation and the structure, exterior, and installations (heating, water, gas, electricity) to be maintained in repair.

Ownership of a property for a fixed term (the lease), with the freehold owned by a separate party. Leaseholders pay service charges and potentially ground rent. For BTL, leasehold flats are common but add management complexity. Leases below 80 years become increasingly difficult to mortgage and expensive to extend.

The mortgage loan as a percentage of the property's value. At 75% LTV on a £200,000 property, the loan is £150,000. Most BTL mortgages are available up to 75% LTV; higher LTVs reduce rate options and increase monthly costs. Lower LTV improves ICR and reduces risk.

The statutory licensing regime requiring all HMOs with 5 or more occupants from 2 or more households to hold a licence from the local authority. Licences are valid for up to 5 years, require compliance with minimum room sizes, fire safety standards, and management conditions. Operating without a licence is a criminal offence.

Previously, landlords could deduct mortgage interest directly from rental income before calculating tax. Section 24 replaced this with a 20% tax credit from April 2020. Higher-rate taxpayers in personal name are significantly disadvantaged — the effective tax rate on rental profits can exceed 100% in some cases. Limited companies retain full mortgage interest deductibility.

Annual rent minus all running costs (management fees, maintenance, insurance, void allowance, compliance costs), divided by purchase price. A more meaningful performance measure than gross yield. For a single-let property to be viable at current rates, net yield should exceed 3–4% after all costs but before mortgage.

A formal notice to end a tenancy — used when a tenant wishes to leave, or by a landlord as part of the Section 8 possession process. Under the Renters Rights Act 2025, periodic tenancies require notice from the tenant of at least two months (or the rental period, whichever is longer).

Purchasing a property before it has been built, based on developer plans and specifications. Buyers pay a reservation fee and exchange contracts with completion on construction finish. Off-plan purchases can secure below-market prices but carry development risk (delays, specification changes, market movement between exchange and completion).

A tenancy that runs indefinitely on a rolling basis — week to week or month to month — without a fixed end date. Under the Renters Rights Act 2025, all new tenancies in England are periodic from day one. Periodic tenancies continue until ended by the tenant giving notice or the landlord serving a valid Section 8 notice.

Development that can be carried out without applying for full planning permission, under rights granted by the Town and Country Planning (General Permitted Development) Order. Converting a house (C3) to a small HMO (C4) is normally permitted development — unless the council has made an Article 4 Direction removing this right.

Under PRA (Prudential Regulation Authority) rules, a landlord with four or more mortgaged buy-to-let properties. Portfolio landlords are subject to additional lender scrutiny — lenders must assess the aggregate ICR across the whole portfolio, not just on the property being financed.

The statutory documentation that must be provided to a tenant within 30 days of receiving a deposit — including the name of the deposit protection scheme, the scheme's leaflet, landlord contact details, and the dispute process. Failure to provide prescribed information carries the same penalties as failure to protect the deposit.

An insurance policy that covers lost rental income when a tenant stops paying rent, typically for 6–24 months while possession proceedings are underway. Requires tenants to have been properly referenced before the tenancy. More valuable post-Renters Rights Act due to extended possession timescales.

Legislation that received Royal Assent in May 2025 abolishing Section 21 no-fault evictions, creating periodic tenancies from day one, restricting rent increases to once per year, introducing mandatory landlord ombudsman membership, and establishing the private rented sector database.

The legal requirement for landlords in England to check that all adult occupiers aged 18+ have the right to live in the UK before a tenancy begins. Introduced in 2016. Civil penalties of up to £20,000 per tenant for non-compliance.

A notice served on Form 3 under Section 8 of the Housing Act 1988, citing one or more statutory grounds for possession. Following abolition of Section 21, this is now the only way to end a tenancy where the tenant does not voluntarily vacate. Grounds include rent arrears, landlord occupation, sale, and anti-social behaviour.

A no-fault eviction notice formerly used under Section 21 of the Housing Act 1988, allowing landlords to end a tenancy without giving a reason. Abolished by the Renters Rights Act 2025. Cannot be served on new tenancies after the commencement date of the Act.

A tax change (phased in from 2017, fully effective from 2020) that replaced full mortgage interest deduction for individual landlords with a 20% tax credit. Significantly increases the effective tax rate on rental profits for higher-rate taxpayers — a key driver of limited company adoption for new property acquisitions.

A council scheme requiring all privately rented properties in a designated area to hold a licence — not just HMOs. Common in areas with high private rented sector concentrations. Licences typically cost £300–£700 and require compliance with minimum standards. Check whether your target investment area has selective licensing.

A limited company set up specifically to hold property assets — used by landlords to benefit from full mortgage interest deductibility, lower corporation tax rates, and more flexible profit extraction than personal-name ownership. SPV mortgages carry a small rate premium (0.3–0.5%) over personal-name BTL mortgages.

Tax payable on property purchases in England and Northern Ireland. BTL and second home purchases attract an additional 5% surcharge on top of standard residential rates. Must be paid within 14 days of completion.

The lender's default interest rate, applied when a fixed or tracker product expires. SVRs are typically 7–8.5% for BTL in 2025 — far above available fixed rates. Every landlord should remortgage or switch products before their fixed rate expires to avoid reverting to SVR.

The notional interest rate used in the ICR calculation — typically 5.5% regardless of the actual mortgage rate. Lenders use a stressed rate to ensure the mortgage remains serviceable if rates rise. A property that only passes ICR at the current low rate would fail when rates increase.

Legislation prohibiting most charges to tenants in England. Permitted payments are limited to: rent, tenancy deposit (max 5 weeks' rent), holding deposit (max 1 week's rent), late payment interest, and certain default charges. Referencing fees, admin fees, and check-out fees are all banned.

A mortgage product where the rate tracks the Bank of England base rate at a fixed margin (e.g. base rate + 1.5%). Unlike a fixed rate, monthly payments change when the base rate changes. Useful when rates are expected to fall; risky if rates rise unexpectedly.

The period between tenancies when a property is unoccupied and generates no rental income. A well-managed single-let should average 2–3 weeks void per year; HMO rooms 2–3 weeks per room. Void periods should be modelled explicitly in investment appraisals — not assumed to be zero.

A court order authorising bailiffs to physically evict a tenant who has not vacated following a possession order. Applied for after a possession order has been made and the deadline for the tenant to leave has passed. Bailiff appointment typically takes 4–8 weeks from application.

The annual return on a property investment expressed as a percentage of the purchase price. Gross yield = annual rent ÷ purchase price. Net yield = (annual rent minus costs) ÷ purchase price. HMOs typically achieve 9–14% gross yield; single-lets in northern cities 5–8%; London single-lets 3–5%.