Build to rent investment, yields and appraisal

Build to rent investment means funding or owning homes designed and built to be let rather than sold, usually as a whole block or a neighbourhood of houses held by one owner. Investors earn rent from tenants and may gain from a rise in value. Most large schemes are owned by pension funds, insurers, property companies and specialist investment funds.

Build to rent, often shortened to BTR, differs from buy-to-let, where individual landlords buy separate homes to let. A BTR scheme is run as a single business, with on-site management, shared amenities and longer tenancies, and it is financed and valued on its total income rather than as a set of individual homes.

Institutional investors such as pension funds and insurers are drawn to build to rent because rent from many homes gives long-term, steady income that can rise over time. Property companies, developers and specialist funds also invest, either by developing schemes themselves, by forward funding a developer's scheme, or by buying completed and let blocks.

Private investors usually reach the sector through listed property companies or funds rather than owning homes directly, because schemes are large and are let and managed as a whole. Single-family rental, where groups of houses are built to rent, has widened the range of schemes and the investors involved in recent years.

A build to rent yield compares a scheme's income with its value or cost. The gross yield uses total rent, while the net yield uses net operating income, which is the rent left after operating costs such as management, maintenance, insurance, utilities in shared areas, letting costs and allowances for empty homes and future repairs.

The gap between gross and net income, often called gross-to-net, is larger for build to rent than for a typical buy-to-let because of on-site staff, amenities and service levels. Any published BTR yield or gross-to-net figure should carry the date and source of the report it comes from, because market figures change over time.

This worked example uses example figures, not market data, to show how a net yield is set for a scheme. It assumes 200 homes let at £1,500 a month, a gross-to-net deduction of 25% of rent for operating costs, and a value of £72,000,000, which leads to the net yield set out in the next paragraph.

In the worked example, with example figures, not market data, gross rent is 200 x £1,500 x 12 = £3,600,000 a year. Removing 25% for operating costs leaves net operating income of £2,700,000. Dividing that by the £72,000,000 value gives a net yield of 3.75%. Higher operating costs or empty homes would reduce it.

A build to rent feasibility appraisal tests whether a scheme's finished value covers its total cost with enough margin. It brings together land, build, professional fees, finance costs and the time to fill the homes, then sets them against a value based on expected rent, operating costs and the yield an investor would pay. Each input is tested for sensitivity.

A financial model for build to rent usually runs over many years, because the owner keeps the homes and earns rent rather than selling on completion. It covers the build period, the lease-up period while homes are first let, and the stabilised period once occupancy settles, with assumptions for rent growth, cost growth and future repairs.

Lenders and investors review the model closely, often with an independent valuation under RICS standards. How that build period is funded, including development loans and forward funding, is explained on the build to rent funding page.

Build to rent income depends on local demand for rented homes, the rents tenants can afford and competition from other schemes. Operating costs can rise faster than rents, which reduces net income. Construction delays and cost overruns affect schemes still being built, and changes to rental regulation or tax can affect the returns from the homes.

Building safety rules apply to many BTR blocks, and taller buildings fall within the higher-risk building regime under the Building Safety Act 2022, which adds approval stages and ongoing duties for owners. These requirements need to be built into the appraisal from the start.

Investors also consider how easily a scheme could be sold in future and who the likely buyers would be. Schemes in locations with strong rental demand and a record of transactions are usually easier to sell or refinance, which supports both their value and the terms lenders will offer.

Single-family rental schemes, made up of houses rather than flats, have different cost profiles and tenant patterns, and investors model them separately from blocks. Longer tenancies can reduce letting costs, but maintenance is spread across more separate buildings.