Name: Architect-designed house renovation in Braine-l'Alleud
Brand: Avenir Rénovations
Rating: 4.94 (31 reviews)

Why choose Avenir Renovations?

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What makes renovating an architect-designed house different

Renovating an architect-designed house is not like renovating a standard construction. Several factors make these projects more complex and require a specific approach.

Materials that do not tolerate compromises

Raw concrete, large dimension insulating glazing, zinc or exotic wood cladding, custom carpentry: architect-designed houses often use materials that do not have standard replacements available in large stores. Using a cheap substitute betrays the entire composition. We source the appropriate materials and call on experienced installers in these specialties.

Technical systems hidden within the structure

Architect-designed houses often integrate ducts, networks, and technical systems into the very structure of the building: slabs, load-bearing walls, suspended ceilings. An energy renovation that affects insulation or networks requires thorough prior analysis to avoid distorting the volumes or creating thermal bridges where the architectural design did not foresee them.

Possible heritage protections

Some signed constructions, particularly in Lillois or the historic center of Braine-l'Alleud, enjoy protection or are of recognized heritage interest by the municipality or the Walloon Region. In this case, any modification of the exterior appearance is subject to authorization. Avenir Rénovations identifies these constraints before submitting permit applications to avoid any surprises during the project.

Our services for architect-designed house renovation in Braine-l'Alleud

Avenir Rénovations covers all the necessary aspects to renovate an architect-designed house, with a constant concern to preserve what adds value to the property.

The technical specifics of architect-designed houses in Braine-l'Alleud

The architect-designed houses from the sixties to eighties in Braine-l'Alleud often use construction techniques not found in the common construction of the time. Here are the technical points that require special attention.

Concrete slabs and slab floors

Many architect-designed houses from this period have solid concrete floors with integrated heating in the slab (integrated underfloor heating). These systems are difficult to renovate: the copper pipes in the slab may have aged, and cold areas indicate a blocked circuit or a leak. Intervening on this type of floor requires precision to avoid fracturing the slab or the integrated network.

Large dimension glazing

The south-facing bay windows characteristic of the architecture of the seventies were often made of very thick single glazing. Their replacement with modern insulating glazing may encounter issues with the availability of frames in the same format. We work with carpenters capable of reproducing the original profiles in modern materials to maintain the architectural appearance while radically improving thermal insulation.

Raw floor coverings

Waxed concrete, smoothed screed, natural slate: the floors of architect-designed houses from this generation were often chosen for their visual minimalism. Restoring them requires specific skills. Cracked or stained waxed concrete can be restored by fine sanding and a new layer of tinted resin. Scratched natural slate can be treated by water polishing and re-impregnation with linseed oil.

Budget and timelines for the renovation of an architect-designed house in Braine-l'Alleud

These projects generally have a cost higher than that of a standard renovation due to the specific materials and the precision of execution required. Indicative ranges, VAT included.

Type of work	Price indication including VAT
Partial renovation (2-3 aspects, envelope or interior)	30,000 to 60,000 €
Complete interior renovation (150-200 m²)	80,000 to 160,000 €
Global interior + envelope + technical renovation	130,000 to 300,000 €

These figures reflect the additional cost related to specific materials and the precision required. For a complete renovation of an architect-designed house of one hundred sixty square meters including the replacement of large windows and bringing the networks up to standard, expect between 100,000 and 150,000 € depending on the materials chosen. A detailed quote is established after a technical visit and architectural analysis.

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Avenir Rénovations at your service for your architect-designed house

An architect-designed house renovated with rigor and respect for the original concept retains, and often increases, its value in the Braine market. Avenir Rénovations supports you from the audit to the handover, with craftsmen who know these atypical properties. Get in touch for a preliminary analysis of your property in Braine-l'Alleud: we evaluate the original concept and the margins for maneuver before proposing anything.

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The market value of renovated architect-designed houses in Braine

A coherently renovated architect-designed house that respects the original concept positions itself at the top of the Braine market. These atypical properties attract specific buyers who are looking precisely for what standard construction cannot offer: a unique space, a strong aesthetic, a particular light. A renovation that betrays this character with generic materials loses this advantage and banalizes the property. In contrast, a renovation that extends and modernizes the architectural approach amplifies the perceived value and market positioning.

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