Buying new-build property in Belgium: 2026 guide

Why buy new-build in Belgium in 2026?

The Belgian new-build market in 2026 shows particular dynamics: tightened EPC requirements, rising construction costs, land scarcity in urban areas, but also maintained regional tax incentives and solid legal warranties. Buying new-build is no longer a default choice — it is a strategic trade-off requiring understanding of costs, deadlines, protections and pitfalls specific to this market segment.

A new-build buyer enjoys five structural benefits that older properties cannot offer: high energy performance (EPC A or B mandatory for permits issued after 2024 in Wallonia), a complete chain of construction warranties over 10 years, the protective Breyne Law regime securing payments and imposing the completion guarantee, no foreseeable works during the first decade, and the guarantee of occupying a property compliant with the latest standards (acoustic, ventilation, accessibility).

In return, new-build implies its own constraints: 21% VAT instead of 12.5% registration duty (except special reduced-rate cases), delays between signing and delivery of 12 to 24 months, developer risk in case of bankruptcy, administrative complexity linked to energy bonuses and regional incentives. The decision to buy new-build is therefore taken weighing all factors.

Steps to buy new-build: from search to key handover

A new-build purchase unfolds in seven key steps spread over 12 to 30 months depending on property type (already built, under construction, off-plan).

Step 1 — Search and visit. You identify a project (new programme, subdivision, land + builder). Visit the show home or an already-delivered apartment from the same developer if available. Request contact details of previous buyers for feedback on delivery quality.

Step 2 — Compromise or reservation option. For an already-built property, this is a classic compromise. For an off-plan property, it is often a reservation option (deposit €5,000 to €15,000). Caution: under the Breyne Law, the deposit cannot exceed certain caps and must be blocked at the notary.

Step 3 — Loan application and bank approval. You have 4 to 8 weeks to obtain in-principle approval and then the firm offer from your bank. A suspensive financing clause must appear in the compromise.

Step 4 — Signing the authentic deed. Before the notary, around 3 to 4 months after the compromise. You pay costs (notary, VAT, mortgage guarantee) and the first price instalment.

Step 5 — Site follow-up (if VEFA or turnkey). During 10 to 24 months, you track progress via fund calls (Article 7 Breyne Law). Visit the site regularly, keep letters and e-mails from the developer.

Step 6 — Pre-completion and provisional reception. At completion, you carry out a contradictory visit with the developer (ideally with expert assistance). The minutes record the property’s condition and any reservations. See our pillar Pre-completion and Provisional reception.

Step 7 — Final reception (one year later). After a year of occupancy, the final reception closes the perfect-completion warranty and releases the security deposit balance. See Final reception.

Detailed cluster: Steps to buy new-build.

Financing a new-build purchase

Financing a Belgian new-build purchase combines three sources: own funds, mortgage loan and sometimes regional bonuses or tax reductions.

Required equity. In 2026, the National Bank of Belgium recommends personal contribution of at least 10% of the property price, but in practice banks often require 20% for young buyers or profiles without permanent employment — a cost item you can precisely cost via the official Notaire.be (Fednot) calculators. You must also cover purchase costs (notary 1-2%, mortgage guarantee 1-2%, VAT already included in new-build price).

Borrowing capacity. Basic rule: monthly payments on all your credits must not exceed 40% of your net income. For a couple with €4,500 net income, the maximum payment is €1,800, corresponding to a loan of about €360,000 over 25 years at 3.5%.

Mortgage: rate and duration. Belgian mortgage rates in 2026 hover between 3.2 and 4.1% depending on your profile, contribution and duration. Standard duration: 20 to 25 years, sometimes 30 years for young first-time buyers. Compare 3 to 5 banks before committing.

Regional aid. Wallonia: energy bonus for EPC A+, Chèque Habitat (tax reduction up to €1,520/year). Brussels: low-energy new-build acquisition bonus, Renolution bonuses. Flanders: Vlaamse Woonlening for first-time buyers.

Cluster: New-build purchase financing.

“The mortgage for a Belgian new-build purchase remains a very long-term credit: the most frequent mistake is underestimating ancillary costs (notary, guarantee, file fees) which can represent 5 to 8% of the total price.”

Notaire.be, real-estate market study Q4 2025

Warranties to demand before signing

This is the most technical part of new-build purchase — and what separates a solid file from a potential nightmare. Four certificates must be in hand before you sign the authentic deed.

1. Completion guarantee certificate (Breyne Law, Article 12). This guarantee protects your payment in case of developer bankruptcy. It takes the form of a bank guarantee or completion insurance. Without this certificate, the contract is void. Categorically refuse to sign.

2. Ten-year insurance certificate. Mandatory since the Act of 31 May 2017 published in the Belgian Official Gazette for all weather-tight shell professionals. Demand the certificate from the contractor AND the architect. Coverage must be valid until property delivery plus 10 years.

3. All-risks construction (TRC) insurance certificate. Subscribed by the developer in VEFA or by the contractor in turnkey. It covers incidents during the construction phase (theft, vandalism, fire, water damage).

4. 5% security deposit certificate. At signing, the developer must constitute a financial guarantee of 5% of the property price, blocked at the notary or with an approved financial institution. Half is released at provisional reception, the other half at final reception.

Cluster: Warranties to demand.

VEFA versus turnkey: two very different regimes

The choice between VEFA (off-plan sale) and turnkey structures the entire purchase. Understanding the difference well avoids costly misunderstandings.

VEFA is a sale: the developer sells a property to be built (typically an apartment in a collective building) and remains owner until each floor is completed. The buyer pays as works progress (instalments capped by Article 7 Breyne Law). At delivery, ownership and risks are transferred.

Turnkey is a works contract: the buyer is owner of the land from the start (which they purchased or contributed) and has it built by a general contractor providing a complete service (plans, coordination, execution, delivery). The property belongs to them throughout construction; they bear the risks (mandatory TRC insurance).

Key differences:

• Ownership: VEFA = transfer at delivery; turnkey = from land purchase
• VAT: 21% on all in VEFA; 21% on construction and registration duty on land in turnkey
• Site risks: borne by developer in VEFA; by buyer in turnkey (with TRC)
• Payments: by instalments according to progress in both cases (Article 7 Breyne Law)

See our clusters Turnkey apartment and Turnkey house.

EPC and energy performance: the 2026 standard

Since 2024 in Wallonia and 2023 in Brussels, every building permit for new-build housing imposes an EPC level A or B. This requirement transforms the market: enhanced insulation, mechanical controlled ventilation, airtightness measured by blower-door test, integrated renewable energy (heat pump, photovoltaic, solar thermal).

Price consequences. An EPC A home costs 4 to 8% more to build than an EPC C, but its energy costs are divided by 3 to 5 over the occupancy period.

Resale value consequences. An EPC A or B resells faster and with less discount, especially since mandatory EPC mention in listings. Conversely, an EPC E or F becomes virtually unsellable.

Verifications to make. Before signing: demand the provisional EPC note drawn up by the EPC officer. At reception: demand the final EPC certificate to be delivered within 6 months of commissioning. See: New-build EPC.

Common pitfalls to avoid

Four mistakes recur frequently in new-build buyer files in difficulty:

1. Signing too short a compromise without detailed specifications. The compromise must precisely describe finishes, equipment, materials. A vague compromise gives the developer freedom to downgrade.

2. Accepting advance payments beyond actual progress. Article 7 of the Breyne Law caps instalments. Any payment demand above the authorised threshold is illegal.

3. Receiving without an expert an apartment or house. A botched reception lets through on average €8,000 of unreserved defects on a turnkey house. See our Provisional reception expert service.

4. Not demanding the completion guarantee certificate. If the developer goes bankrupt and this guarantee is missing, you risk losing your deposits. Without this certificate, the contract is void — never sign.

Conclusion

Buying new-build in Belgium in 2026 remains a coherent strategic project — energy performance, legal warranties, no works — provided you approach the file with method and rigour. Auditing specifications, checking certificates, following the site, taking care of reception: every step counts to turn an investment into long-term serenity.

For non-professional buyers, support by an independent expert architect is the project’s most profitable investment — a few thousand euros securing several hundred thousand of capital.