New apartment: rental investment in Belgium

The new apartment investment rental in Belgium appeals to both first-time investors and established estates. With reason: the combination of Breyne Law legal security + ten-year and two-year warranties + favourable taxation via 6% VAT or regional allowances + near-zero rental vacancy in premium locations offers a cocktail rarely found in older property. Still, one must choose the right format, the right city, and structure the setup taxwise. This page synthesises the key parameters of new apartment yield in 2026 and the pitfalls to avoid before signing.

Gross and net yield: 2026 orders of magnitude

The gross yield of a new apartment return in rental is calculated simply: annual rent excluding charges ÷ acquisition price (excluding fees). The Belgian 2026 ranges:

• Brussels centre and first ring: 3.0 to 3.8% gross. Stable market, vacancy < 2%, capital gain on resale.
• Liège: 4.2 to 5.5% gross, but longer vacancy, less solvent tenants on average.
• Namur: 3.8 to 4.8% gross, solid student/young-active profile.
• Wavre / Louvain-la-Neuve: 3.5 to 4.5% gross, high tenant quality (executives, expats).
• Charleroi, Mons, Verviers: 5 to 7% gross advertised, but with significant risk premiums.

The net yield, after co-ownership charges (€40 to €80/month), property tax (€1,200 to €2,500/year), landlord insurance (€180 to €300/year), vacancy provision (4% of rent), major-works provision (5% of rent), typically reaches 2.2 to 3.5% in Brussels, 3.5 to 4.5% in Liège.

Compared to the equivalent older property, new-build typically loses 0.5 to 1 point of gross yield (higher price per m²) but recovers 0.3 to 0.5 point on net (reduced charges, minimal vacancy, no major works for 10 years). The differential largely fades over 10 years.

Format choice: why the 2-bedroom dominates

Profitable new rental investment in Belgium clearly favours the 2-bedroom (60 to 90 m²) for several cumulative reasons:

• Widest tenant target: couples without children, young families, professional flat-shares, expats. Minimal vacancy.
• Maximised rent per m²: a 2-bedroom rents for €10 to €15/m²/month, versus €8 to €10/m²/month for an equivalent 3-bedroom.
• Resale liquidity: most-demanded format on the secondary market, faster resale.
• Controlled entry price: €220,000 to €380,000 depending on city, accessible with a 100% loan.

See our new 2-bedroom apartment cluster for the full ratios. The studio or 1-bedroom offers a higher gross yield (up to 6%) but with high tenant rotation. The 3-bedroom targets established families — longer vacancy but more stable rents.

Taxation of new apartment investment

Three tax parameters structure the net yield:

6% or 21% VAT: for a rental investment (not principal residence), VAT stays at 21% except in particular cases (demolition-reconstruction in eligible zone). See 6% VAT conditions. This raises the price by 15% compared to own occupation.

Property tax: regional annual tax calculated on the indexed cadastral revenue. In Wallonia and Brussels, expect €1,200 to €2,500/year for a new 2-bedroom.

Rental-income tax: for a private landlord, tax is calculated on the indexed cadastral revenue increased by 40% (not on actual rent). Extremely favourable regime: an apartment rented at €1,200/month (€14,400/year) with an indexed cadastral revenue of €1,600 generates only €2,240 of taxable base, about €1,000 of tax depending on marginal bracket. For companies (real-estate company, patrimonial private limited), the regime differs and taxes actual rents.

To optimise, consult tax advantages and a tax adviser for corporate structures.

Case study: 2-bedroom in Liège, net yield 4.1%

A concrete case audited by the firm: new apartment 78 m² 2 bedrooms purchased in 2024 in central Liège, €265,000 excl. VAT + 21% VAT = €320,650 incl. VAT, notary and mortgage fees included €335,000.

Rented from final reception at €1,050/month charges included (net rent €990/month), or €11,880/year. Gross yield: 11,880 / 335,000 = 3.55%.

Annual charges: co-ownership €720, property tax €1,480, landlord insurance €220, vacancy provision €475, major-works provision €595, total €3,490. Net income before tax: €8,390. Tax on indexed cadastral revenue increased: €1,050. Net net yield: 4.3%.

To this is added latent capital gain (5 to 8% over 5 years on average in central Liège) and the progressive amortisation of the loan. Over 25 years, the overall return (cash flow + capital gain + capital amortisation) approaches 7 to 9% per year.

Pitfalls to avoid in new-build investment

• Underestimating 21% VAT: on a rental investment, it weighs down the entry price by 15%.
• Neglecting co-ownership charges: in some high-end programmes, they reach €150/month and weigh down yield.
• Buying in a secondary location: vacancy + tenant degradation can drop yield by 30%.
• Forgetting provisional reception: a rushed minutes document lets pass defects that will surface during the first rental (poor water-tightness, insufficient ventilation).
• Ignoring the acoustic profile: in apartment buildings, it is the first reason for tenant rotation.
• Oversizing: a 3-bedroom as investment immobilises more capital for a lower yield.

Securing the investment before signing

An investment of €250,000 to €400,000 deserves a structured pre-acquisition audit: analysis of the Breyne Law preliminary agreement, verification of developer solidity, specifications audit, tax simulation. The firm Mon Etat Des Lieux offers Breyne Law support covering the whole. For provisional reception at end of site, see provisional reception expert. Request a free quote within 24 hours. Also consult new apartment Liège for local ratios and new apartment project for ongoing programmes.