Annual gross revenue

In the income approach, annual gross income refers to the total sum of all income that a property generates or can sustainably generate over the course of a year-primarily rental income (annual base rent), but also other sources of income such as revenue from advertising space, parking spaces, or antenna installations. It is the starting point for determining the income value in accordance with the Real Estate Valuation Ordinance (ImmoWertV) and forms the basis from which all operating costs are deducted to determine the net income.

Annual Gross Income in the Income Approach

The income approach is the standard method for valuing investment properties (rental buildings, commercial properties, mixed-use properties). The calculation sequence is as follows:

1. Annual Gross Income: Annual base rent (achievable at market rates) + other income
2. minus operating costs: administrative costs, maintenance costs, risk of rent loss, miscellaneous
3. = Net income from the land (annual net income)
4. minus return on land value (land value × property interest rate)
5. = Net income from the building
6. × Multiplier (depending on remaining useful life and property interest rate)
7. + Land value
8. = Capital value of the property

The annual gross yield is intentionally calculated based on the sustainable market rent (target rent) rather than the current actual rent if the two differ. Appraisers base their calculations on the rent index and comparable transactions.

Difference between Annual Gross Income, Annual Net Income, and Annual Net Rent

These three terms refer to three different stages of the income statement:

• Annual Gross Income: Total revenue before any deductions (gross revenue)
• Annual net income (net gross income): Annual gross income after deducting all operating costs - the basis for capitalization in the income approach
• Annual net rent (adjusted): Depending on usage, synonymous with annual net income or referring to a single tenant

In practice, confusing these terms often leads to miscalculations when determining returns. Comparing gross rental yields (based on annual gross income) with net rental yields (based on annual net income) is like comparing apples to oranges.

Annual Gross Income for Mixed-Use Properties

For buildings with multiple uses (residential, retail, office, restaurant, underground parking), the annual gross income is composed of all component incomes:

• Residential rental income (based on market rent for residential space)
• Commercial income (based on market rent for commercial space, often significantly higher than residential rents)
• Parking space and garage income
• Advertising space rentals, antenna agreements, other usage rights

In the valuation, the individual sub-areas are often capitalized using different property interest rates, as residential and commercial properties have different risk profiles.

Gross Annual Income: Actual Rent vs. Market Rent

An important distinction that often leads to misunderstandings in practice: The gross annual income in the appraisal report is based on the sustainable market rent, not necessarily on the actual rent currently being paid. If a building with existing tenants is significantly below the market rent, the appraiser nevertheless applies the market-standard rent and, if necessary, applies a discount for the adjustment risk (risk of rent loss during a tenant change, time required for market adjustment).

For buyers, this means: A purchase price based on the annual gross yield of the market rent can be justified despite low current rental income-if the rental potential can realistically and predictably be increased. We carefully examine this point for every investment property.

Annual Gross Yield and Rent Increase Potential

For buyers of existing properties with existing tenants, a key analytical question is: How far below the achievable market rent is the current actual rent, and how quickly can this gap be closed? The rent increase potential directly influences the future annual gross yield and thus the income value.

In Germany, strict rent regulations apply to residential properties: Rent increases based on Section 558 of the German Civil Code (BGB) are capped at 20% over three years (in areas with a tight housing market, the cap is 15%-in Nuremberg, the rent cap applies). This means: A buyer who relies on rapid rent increases to boost value must factor in realistic timelines. Exceptions apply in cases of extensive renovations (Section 559 of the German Civil Code (BGB)): Up to 8% of the renovation costs per year can be passed on to the rent-but even this is capped.

Annual Gross Income as the Basis for the Purchase Price Multiplier

In practice, the income value is often simplified and expressed using a purchase price multiplier (factor): the purchase price divided by the annual gross income yields the multiplier. A multiplier of 20 means that the purchase price is 20 times the annual gross yield (corresponding to a gross rental yield of 5%). In major German cities, these multipliers often ranged between 25 and 35 between 2018 and 2022-a reflection of the low-interest-rate environment and excess demand.

For sellers, it makes sense to know the achieved purchase price in relation to the annual gross yield in order to be able to assess it against market comparisons (published in the real estate market report). If your own multiple is well above the market average, this may indicate a particularly good location or amenities-or an overvaluation. We help owners realistically assess this value.

Practical Tip for Owners in Nuremberg and Franconia

In Nuremberg apartment buildings with ground-floor commercial space (e.g., in the Südstadt, downtown, or Gostenhof), the annual gross yield is often significantly higher than for purely residential buildings-due to higher commercial rents. However: Commercial rents are subject to higher vacancy risks, which is reflected in higher property capitalization rates (4.5-6.5% instead of 2.5-4.5% for residential properties in Nuremberg) and thus lower multiples.

We help you realistically determine the annual gross yield of your property and derive a transparent income value from it-whether as a basis for a sale or for financing discussions.

Frequently Asked Questions

Is the annual gross yield calculated using the actual rent or the market rent?

In the income approach according to ImmoWertV, the calculation is generally based on the sustainable market rent (target rent). If the actual rent deviates significantly, the appraiser may apply a premium or discount to account for the adjustment risk.

Are operating costs included in the annual gross yield?

No. The annual gross yield is based on the net rent (excluding operating costs). When properly accounted for, operating costs are passing items and are not relevant for the income analysis.

What are typical management costs that are deducted from the annual gross yield?

As a rule of thumb: 20-25% of the annual gross income for residential properties (management costs approx. 3-5%, maintenance costs approx. 10-15%, risk of rent loss approx. 2-5%). For commercial properties, the deductions can be significantly higher (30-40%) due to greater vacancy risks.

What “other income” is included in the annual gross income?

In addition to rental income, the following items may be included in the annual gross income: revenue from leased parking spaces and garages, income from advertising space on the building facade, antenna lease agreements (e.g., cell phone antennas on the roof), revenue from common facilities (washing machines, bicycle storage rooms), and-if contractually agreed-income from energy supply (e.g., district heating, photovoltaic lease). These items can significantly increase the annual gross income and thus the income value.

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