A house as an investment: is a detached house worthwhile?

By Loro Real Estate team · Last updated: July 2026

A house as an investment sounds solid: you acquire not just living space but all the land and an independent unit. But is a single-family house really worthwhile, or is an apartment or apartment building wiser? This guide honestly compares single-family houses (EFH), apartment buildings (MFH) and individual apartments (ETW) for investors, explaining opportunities, risks and assessment metrics.

First, we promise no returns and invent no market prices. Whether a house is a good investment for you depends on location, condition, financing and goals. This article helps you ask the right questions.

What “a house as an investment” means

Simply, you buy a house to let it and build long-term wealth rather than live in it. In practice, this covers two very different models.

• Rented single-family house (EFH): one property, one plot, one tenant. You own everything, including the land, and decide maintenance and modernisation alone.
• Apartment building (MFH): one building with several residential units and tenants. More capital is needed, but rental default risk is spread.

The third option, an individual apartment (ETW), is legally part-ownership in an owners' association. Weigh these three routes deliberately: returns, risk and effort differ significantly.

Benefits of a single-family house as an investment

Several factors support a single-family house:

• The whole plot and a high land share. You acquire all the land. Land does not wear out and is a significant, often value-stable component in sought-after locations.
• Simple ownership structure. No co-ownership, owners' association or decisions over your head. Renovation, modernisation and rental strategy are yours alone.
• Often stable locations and settled tenancies. Families often rent houses in good residential locations long-term, potentially reducing turnover.
• Potential later owner-occupation. Moving in yourself or passing a house to family can be easier than doing so with a share in a multi-unit building.

Risks and drawbacks, stated honestly

Concentration in one property is also the greatest weakness. Discuss these points openly:

• Concentration risk: one tenant, all or nothing. A single-family house is either 100% or 0% let. If the tenant leaves, all rent stops, unlike a building where vacancy affects one of several units. One move-out can mean complete rental default.
• Full maintenance burden on one unit. Roof, heating, façade and grounds: you alone cover all maintenance and renovation for the whole building. No owners' association shares it.
• Often lower gross rental yield. Single-family houses often trade at higher prices relative to rent than apartments or apartment buildings, because owner-occupiers also buy. This tends to depress gross yield.
• More capital per property. A whole house usually ties up more equity and borrowing than one apartment. Wealth is concentrated in one location, making diversification across smaller units harder.

When a house makes sense as an investment

Despite the risks, a house may be right depending on your goals:

• The option of living there later. If you plan to move in or give it to children, a single-family house offers more flexibility than partial ownership.
• A deliberate location bet. Focusing on land value in a particular high-demand location means buying a high land share, an asset component with little physical wear.
• Scaling through an apartment building. If ongoing income and spreading risk come first, an apartment building is often more suitable. For the purchase process, see our page on Buy an apartment building in Mannheim.

For a manageable-capital start, an apartment as an investment may be more pragmatic. The right option depends on capital, available time and risk appetite.

Calculate properly: ratio and net rental yield

Two metrics, not gut feeling or brochure figures, decide viability. Calculate both before treating an offer seriously.

Price-to-rent ratio (rental multiplier) = purchase price / annual rent excluding service charges. It shows how many times annual rent you pay. Higher ratios are usual in sought-after Rhein-Neckar locations; low ratios are not automatically better if condition or location explains them. For details, see Price-to-rent ratio and rental multiplier.

Net rental yield (%) = ((annual rent excluding service charges − non-recoverable operating costs) / (purchase price + purchase costs)) × 100. It is more honest than gross yield because it includes purchase and ongoing costs. Depending on state and circumstances, purchase costs typically total 6.5–10%: in Baden-Württemberg, for example, 5.0% transfer tax (state-dependent; check current rates) plus around 1.5–2.0% for notary and land register. Loro charges no buyer's commission. For the difference between metrics, see gross and net rental yield.

The quickest check is our interactive property investment calculator: enter price, rent, costs and financing to see yield and cash flow immediately.

Tax on a rented house: the basics

Tax also differs from an apartment purchase. Check these main points with current tax advice:

• AfA on the building share only. Only the building is depreciated, not land. Straight-line depreciation generally runs at 2% for construction from 1925 or 2.5% for older buildings. A single-family house's often high land share reduces the depreciable basis proportionally compared with an apartment.
• Deductible rental expenses reduce tax. Deductions include loan interest, not principal, depreciation (AfA), management and maintenance and non-recoverable operating costs.
• Ten-year capital gains tax period. Selling a rented house at a profit within ten years makes the gain subject to property capital gains tax (Spekulationssteuer) (section 23 EStG) at your personal rate. After expiry, the gain is generally tax-free.

Rules and rates may change: check current rates and your own situation with tax advice. Read more in Tax when letting property.

How Loro Real Estate supports your house purchase

Heidelberg-based Loro Real Estate GmbH has specialised in curated investments across Rhein-Neckar and Hessen since 2018, now supporting over 250 clients and more than 1000 managed units. We work exclusively on the buyer side, with no buyer's commission. Our off-market access includes properties not publicly listed; optional individual rental management handles management and letting after purchase.

Single-family house, apartment building or apartment: we conservatively assess whether the figures work and openly state opportunities and risks. If you are starting out, our guide Property Investment for Beginners helps you get started.

This article is for information only and does not constitute investment, tax or legal advice.

More guides: Price-to-rent ratio and rental multiplier · gross and net rental yield · Property Investment for Beginners