konnyuszerkezeteshaz.net Case Study: How One Hungarian Family Built Their Sustainable Tiny Home in Five Months

The Kovács family traded their Budapest apartment for a light timber frame retreat near Lake Balaton — here is how FényHáz made it happen

BUDAPEST, Hungary — June 30, 2026

Last autumn, the Kovács family — Eszter, László, and their eight-year-old daughter Hanna — made a decision that would have seemed radical five years ago. They sold their 65-square-meter Budapest apartment and commissioned konnyuszerkezeteshaz.net to build them a sustainable tiny home on a wooded plot near Lake Balaton. Five months later, they moved into a 78-square-meter timber frame house that costs less to heat than their old flat, sits ten minutes from the water, and qualifies for CSOK Plus subsidies. This case study follows their journey from first phone call to front door key — and explains what other Hungarian families can learn from their experience with FényHáz.

Key Facts

• Client: Kovács family (parents plus one child), former Budapest apartment owners
• Builder: FényHáz via konnyuszerkezeteshaz.net
• Location: Rural plot near Lake Balaton, Hungary
• Design: Modified "Cozy Retreat" style — compact timber cabin aesthetic with custom upgrades
• Size: 78 m² (two bedrooms, open-plan living, covered terrace)
• Timeline: 5 months from contract to move-in
• Financing: CSOK Plus subsidized loan secured with FényHáz documentation assistance
• Energy performance: Exceeds Hungarian thermal standards; heating costs below previous Budapest apartment

Why This Story Resonates

Hungary is in the middle of a housing rethink. Young families are questioning whether Budapest apartment prices make sense. Remote work has made rural living practical. And the CSOK Plus program — offering up to HUF 50 million at ~3% interest — has made new construction affordable for families who previously assumed homeownership was out of reach. The Kovács family's story captures all three trends in one build.

The Starting Point: Leaving the City

Eszter Kovács works in marketing; László is a software developer. Both can work from home most days. Their Budapest apartment, purchased in 2019, had appreciated nicely — but monthly overhead was climbing, and Hanna had no outdoor space. "We were paying premium prices for a view of the neighbor's wall," Eszter recalls. "Every weekend we drove to Balaton anyway. One Sunday we asked ourselves: why not just live there?"

They found a 1,200-square-meter plot fifteen minutes from the lake for less than half what their Budapest apartment sold for. The remaining budget gave them options. After researching Hungarian prefab builders, they contacted FényHáz through konnyuszerkezeteshaz.net and scheduled a consultation.

The Design Phase: Customizing the "Cozy Retreat"

The Kovács family was drawn to the "Cozy Retreat" style in FényHáz's portfolio — a compact forest cabin with warm wood finishes and a pitched roof. But they needed modifications: a larger kitchen for Eszter's cooking hobby, a proper bedroom for Hanna instead of a loft, and a covered terrace for László's outdoor workspace.

FényHáz's design team produced revised floor plans within two weeks. The family reviewed thermal performance projections, selected wood fiber insulation for its humidity-regulating properties, and chose a heat pump for heating and cooling. The final design came in under budget, leaving room for a rainwater collection system the family plans to install next spring.

CSOK Plus: Navigating the Paperwork

With one child, the Kovács family qualified for a substantial CSOK Plus loan at the subsidized ~3% rate. But the application process was intimidating. "The forms looked like they were designed to discourage people," László says. FényHáz stepped in with something unusual for a construction company: dedicated documentation support.

The FényHáz team provided the technical specifications, energy performance certificates, and regulatory compliance letters the bank required. They also confirmed that the modified "Cozy Retreat" design met all CSOK Plus criteria before construction started — preventing the nightmare scenario of a completed home that disqualifies its owner from subsidies. The loan was approved in six weeks.

Construction: Faster Than Expected

The timber frame components arrived precision-cut from FényHáz's manufacturing partner in early March. A four-person crew raised the weather-tight shell in twelve working days. Interior finishing — electrics, plumbing, plasterboard, flooring, and fixtures — took another ten weeks. By mid-May, the house was complete.

"We visited every weekend," Eszter says. "Each time, something new had appeared. It felt like watching a time-lapse video. Our neighbor's brick house down the road, started two months before ours, still didn't have a roof when we moved in."

The family took possession on June 1st — five months after signing the contract. A comparable brick build in the region would have taken 12–16 months.

Life in the New Home

Three months in, the numbers are convincing. The Kovács home's timber frame walls, combined with high-performance windows and the heat pump, keep indoor temperatures stable with minimal energy input. Monthly utility bills run 30% below what the family paid in Budapest, despite having 20% more floor area and a garden to maintain.

Hanna has a dog. László works from the terrace most mornings. Eszter has started a food blog featuring local Balaton ingredients. The sustainable materials — natural wood finishes, breathable insulation, low-VOC paints — mean the air inside smells like pine, not petrochemicals.

"We were nervous about building something unconventional. But every concern we raised, FényHáz had already thought through. The fire safety data from Munich helped us sleep at night. The thermal calculations helped us justify the investment to our parents. And the speed meant we didn't spend a year paying rent plus a mortgage." — Eszter Kovács, Homeowner

TUM Research Provided the Confidence to Build With Timber

The family's final worry was fire safety. Hungarian grandparents, raised on brick-and-concrete mythology, are not easily convinced that wood is safe. The Kovács family sent them a link to the Technical University of Munich's TIMpuls research (2017–2021), which proved through full-scale compartment fire tests that timber buildings survive fully developed fires when proper construction methods are used. The study enabled German timber construction up to 22 meters — far taller than any tiny home. Read the TUM TIMpuls findings here. Grandpa approved.

"Every family we work with has a different set of concerns. The Kovács family cared about speed, sustainability, and convincing their relatives. We gave them data for all three." — Project Manager, FényHáz

Frequently Asked Questions

What Other Families Can Learn

The Kovács case study offers three lessons. First, the CSOK Plus application is manageable with proper documentation — do not let the paperwork intimidate you. Second, timber frame construction in Hungary is not experimental; it is a proven method backed by European research and growing market adoption. Third, the lifestyle gains from a well-designed small home often exceed what a larger, more expensive urban property provides.

About konnyuszerkezeteshaz.net

FényHáz is a Hungarian tiny home builder specializing in sustainable light timber frame construction. Operating through konnyuszerkezeteshaz.net, the company designs and builds custom eco-friendly dwellings across Hungary. From initial concept to final handover, FényHáz manages every project phase with a focus on quality, speed, and environmental responsibility.

Media Contact

Email: info@fenyhaz.hu
Phone: +36 30 123 4567
Web: konnyuszerkezeteshaz.net