What to Check Before Buying Property in Romania: A Technical Inspection Guide for Foreign Buyers

Part 1. The Three Non-Negotiable Checks for New-Build Apartments

Check 1: Windows — Triple Glazing with Warm Spacer Bar

The window specification is the single easiest technical check a buyer can perform — and one of the most consequential. In a properly built nZEB apartment, every window should have three panes of glass (triple glazing) separated by a warm spacer bar. The warm spacer bar is visually identifiable: it is black, made of a composite material with low thermal conductivity. The alternative — a metallic aluminium spacer — is silver-coloured and conducts heat rapidly, creating a cold bridge at the edge of the glass where warm interior air meets the cold glass surface.

The consequence of a metallic spacer is condensation. Warm, humid indoor air (every person exhales moisture with every breath) contacts the cold edge of the glass, water droplets form, and over time this moisture migrates into the window frame, the wall junction, and the surrounding plaster. Within one to three years, the result is visible mould growth around the window perimeter — not because of a leak or infiltration, but because of physics. The moisture comes from inside the apartment, not from outside. No amount of ventilation will fully compensate for a window with the wrong spacer bar in a Romanian winter.

Beyond the spacer, check the window installation method. The traditional Romanian practice is to seal the gap between the window frame and the wall opening with expanding polyurethane foam. This foam degrades over three to five years, losing its sealing properties and eventually developing mould. The correct installation method uses sealing tapes (benzi de etanșare) — self-adhesive strips applied to the interior and exterior of the frame-wall junction before the foam is applied. The tapes provide a durable, airtight, and vapour-controlled seal that prevents moisture migration into the wall cavity. Ask the developer: were sealing tapes used during window installation? If the answer is no — or if the developer does not understand the question — this is a significant quality indicator.

Check 2: Behind the Finishes — What You Cannot See Matters More Than What You Can

The most common mistake buyers make — in Romania and everywhere — is evaluating an apartment by its visible finishes: the tile, the flooring, the paint colour, the kitchen worktop. Experienced construction engineers describe this as ‘buying the clothes without examining the body.’ Finishes are the cheapest and easiest element to change. The systems hidden behind the finishes — electrical wiring, plumbing, waterproofing, sealing — are expensive and disruptive to repair after completion.

For a new-build apartment, the critical questions behind the finishes are: Has the electrical system been installed to modern standards, with separate circuits for high-power appliances (oven, induction hob, washing machine, dishwasher), adequate socket provision in the kitchen zone, and a properly configured breaker panel? Has the plumbing been completely replaced from the main riser inward, using quality pipework (PPR or equivalent)? Have the bathroom and wet-area waterproofing membranes been properly applied and tested? Are there photographic records of each construction stage in the building book (cartea construcției)?

The building book is the buyer’s most powerful verification tool. Romanian construction law requires that every building has a cartea construcției — a comprehensive document containing the building permit, structural calculations, quality inspection reports (procese verbale de recepție calitativă), photographic evidence of each construction stage (foundations, structure, waterproofing, insulation, installations), material certifications, and the final reception protocol. The building book is held by the developer and by the State Construction Inspectorate (ISC). A buyer can — and should — request to review the building book before purchase. If the developer cannot or will not produce it, this is a serious red flag.

Check 3: Heating System — The Decision That Determines Your Costs for Decades

The heating system installed in a Romanian apartment is not a feature — it is a financial commitment that will determine the owner’s utility costs for the entire period of ownership. The choice between heating technologies produces cost differences so large that they can exceed the price difference between competing apartments. This is not a theoretical concern: documented cases from the Romanian market show identical adjacent properties with heating cost differences of 3:1 or more, depending solely on the heating system.

Part 2. What Buyers Overlook: Light, Sound, Ventilation, and the Floor You Choose

Natural Light: A Legal Requirement and a Health Necessity

Romanian building regulations — derived from the Civil Code and public health standards — require that residential spaces receive a minimum of two hours of direct natural sunlight at the winter solstice (the shortest day of the year), projected onto at least 40% of the floor area. This is not an aesthetic preference — it is a legal and health requirement. Apartments that face exclusively north, or that are overshadowed by adjacent buildings, may not meet this standard and may not be legally classifiable as residential space.

Before purchasing, check the land registry extract (extras de carte funciară) to confirm that the space is registered as residential (spațiu de locuit). Some attractively finished spaces — particularly in attic conversions, semi-basements, and north-facing units — are registered as offices, workshops, or studios, not as residential. The distinction matters: a non-residential classification affects mortgage eligibility, property tax rates, and — most importantly — the legal right to use the space as a permanent home.

The health implications of natural light deprivation are well-documented. Lack of sunlight exposure is strongly correlated with depression, sleep disorders, and vitamin D deficiency. In Romania’s climate, where winters are long and overcast, the amount of natural light entering an apartment is not a luxury — it is a determinant of the occupant’s physical and mental wellbeing over the life of the property.

Sound Insulation: The Problem That Gets Worse as Buildings Get Better

One of the paradoxes of modern, well-insulated buildings is that they are quieter from outside noise — but internal noise between apartments becomes more noticeable. When exterior walls are insulated with 15+ cm of thermal insulation and windows are triple-glazed, the ambient background noise from traffic and the city is dramatically reduced. In this quieter interior environment, every sound from neighbouring apartments — footsteps, music, conversations, plumbing, elevator machinery — becomes proportionally louder and more intrusive.

The critical factor is the construction of the walls between apartments (party walls). In a well-built apartment, party walls should be constructed from reinforced concrete or solid brick, with an additional layer of plasterboard on a metal frame, with mineral wool insulation in the cavity. This composite construction provides both mass (to block low-frequency sound) and absorption (to dampen mid- and high-frequency sound). If the party walls are built from lightweight materials — hollow blocks, thin plasterboard partitions, or single-skin masonry without additional treatment — sound transmission between apartments will be a persistent and irresolvable problem.

Additionally, check whether the elevator machinery is vibration-isolated (mounted on rubber damping pads) and whether the elevator shaft is acoustically decoupled from adjacent apartments. In buildings where the elevator shaft shares a wall with a living room or bedroom, and the elevator is not properly isolated, every elevator journey transmits vibration and noise directly into the apartment.

Ventilation: The Mandatory System That Many Developers Skip

Under current Romanian nZEB regulations, every new apartment is required to have a ventilation system — not merely an air conditioning unit. Air conditioning recirculates the same indoor air, heating or cooling it but not replacing it. A ventilation system brings fresh air from outside, filters it, and — in heat-recovery ventilation systems (the standard for nZEB) — extracts heat from the outgoing stale air and transfers it to the incoming fresh air, reducing energy loss while maintaining air quality.

Without mechanical ventilation, a well-sealed nZEB apartment becomes a trap for stale air, moisture, volatile organic compounds (VOCs) from furniture and finishes, and carbon dioxide from human respiration. The result is what building scientists call Sick Building Syndrome: headaches, fatigue, respiratory irritation, and increased susceptibility to allergies and infections. The irony is that the better the building is sealed and insulated (reducing energy loss), the more critical mechanical ventilation becomes — because the natural air infiltration that older, leaky buildings relied on no longer exists.

Top Floor and Ground Floor: Special Risks

Part 3. nZEB: How to Distinguish Genuine Compliance from Box-Ticking

What Real nZEB Looks Like

Since 2021, all new buildings in Romania must comply with the Nearly Zero Energy Building (nZEB) standard — the EU-mandated minimum energy performance requirement. In theory, this means every new apartment should have high-performance thermal insulation, efficient windows, a renewable or high-efficiency heating source, mechanical ventilation with heat recovery, and an energy performance certificate demonstrating compliance. In practice, the gap between genuine nZEB implementation and superficial box-ticking is wide — and the buyer pays the difference in utility costs, comfort, and long-term maintenance.

The practical recommendation for foreign buyers is straightforward: do not rely solely on the energy performance certificate. Hire an independent energy auditor or construction engineer to verify the actual installed systems against the nZEB requirements. The auditor will check insulation thickness, window specifications, heating system type, ventilation provision, and thermal bridge treatment — and compare the findings against the certificate. The cost is €200–500. The value is certainty.

Part 4. Seismic Safety: What Foreign Buyers Must Understand About Romanian Buildings

Romania lies within the Vrancea seismic zone — one of Europe’s most active seismic areas. The last major earthquake (7.2 magnitude, 4 March 1977) killed over 1,500 people, primarily in Bucharest, and severely damaged thousands of buildings. The estimated recurrence interval for a comparable earthquake is approximately 50 years — meaning that statistically, the next major seismic event is within the current generation’s lifetime. This is not theoretical risk — it is actuarial reality.

Romanian seismic design codes have been progressively strengthened since 1977, and buildings constructed under current codes (particularly post-2000) are designed to withstand the design earthquake without structural collapse. The verification cascade for new buildings includes the structural designer, an independent structural verifier, a site engineer, a quality-control engineer (diriginte de șantier), and the State Construction Inspectorate. Each stage generates documentation that should appear in the building book.

For older buildings, the picture is different. Buildings are classified into seismic risk categories after expert assessment: Class 1 (highest risk — marked with a red dot, ‘bulină roșie,’ indicating risk of collapse in the design earthquake), Class 2 (significant structural damage expected), Class 3 (moderate damage), and ‘urgency’ (seismic assessment urgently required). The practical guidance for foreign buyers is unambiguous: do not purchase in a Class 1 seismic-risk building. Banks will not grant mortgages, insurance is difficult or impossible to obtain, and the building is assessed as having a real risk of collapse in a major earthquake. Even proximity to a Class 1 building is a risk — the collapse zone extends to approximately the height of the building in all directions.

Part 5. Buying Land and Building a House: What to Check First

Land: The Hidden Problems That Destroy Projects

Foreign buyers who plan to purchase land and build a house in Romania face a specific set of risks that are invisible without professional assistance. Experienced architects report that the majority of land-purchase problems could have been identified — and avoided — with a professional consultation costing a few hundred euros before the purchase. The problems that are discovered after purchase typically cost thousands or tens of thousands to resolve, if they can be resolved at all.

Building: Budget Reality and the Architect Imperative

The most consistently reported mistake among self-builders in Romania is budget underestimation. Online advertisements and informal market claims suggest that houses can be built for €500–700 per square metre. Professional builders and architects who have documented actual project costs — including foundation, structure, insulation, installations, finishes, kitchen, bathroom, external works, and all fees — report that the realistic all-in cost for a properly built house is €1,000–1,200 per square metre of usable area, minimum. The gap between the advertised cost and the actual cost is €300–500 per square metre — on a 120 m² house, that is €36,000–60,000 of unplanned expenditure.

The solution is professional engagement from the very beginning. An architect (six years of university education plus two years of supervised practice in Romania) designs the house to the owner’s specific needs, optimises the layout to eliminate wasted space (documented cases show 35 m² of unnecessary corridors in poorly designed houses — equivalent to €35,000+ of construction cost), manages the permitting process, coordinates with structural and installation engineers, and supervises the construction quality. The architect’s fee — typically 5–10% of construction cost — is recovered many times over through space optimisation, material efficiency, construction error prevention, and avoidance of the cascading mistakes that amateur design inevitably produces.

Frequently Asked Questions