Phase 01
Analyse old and new
We review structure, dimensions, approvals and technical connections as one buildable proposal.
Expertise • D02
Extension
& roof addition
Additional floor area that belongs to the existing home, technically and architecturally.
D02
01The starting point
Understand the whole before building the parts
Create more space.
Without feeling the extension.
A successful extension does more than add square metres. It improves the entire plan, brings in daylight and feels like a natural part of the original home.
We translate design and engineering into a safe construction sequence and coordinate foundations, steel, envelope, glazing and services at the critical connection between old and new.
Start your renovationThis expertise in practice
02The delivery journey
Each phase deliberately builds on the last
From first insight
to one result.
We begin with what the additional space should achieve, assess every technical connection and start construction once the design, structure and logistics are fully aligned.
Phase 02
Prepare structural works
Foundations, steel, temporary support and the construction sequence are coordinated in detail.
Phase 03
Close the envelope
Structure, roof, façade and glazing are made weather-tight before internal work progresses.
Phase 04
Finish as one home
Services, floors, walls and detailing connect the new space seamlessly to the existing building.
The standard
“The best extension is recognised by how much better the whole home works afterwards, with a natural transition between old and new.”HUIS RENOVATIES / Extension & roof addition
03Work delivered in context
Every element under one project lead
No disconnected parts.
One composed quality.
From foundations to interior finishes, we deliver the complete extension under one project lead. We pay particular attention to the sensitive junction with the existing home as well as the new structure itself.
Coordinated work
01
Foundations and steel
02
Structure and façade
03
Roof additions and dormers
04
Windows and sliding doors
05
Technical installations
06
Complete internal finishes
This expertise suits
When your project needs more than construction.
- Rear or side extensions
- An additional storey or roof extension
- A dormer, bay window or other building extension
- Extensions carried out as part of a wider renovation
04The difference
What we continue to manage throughout
Our responsibility
Quality becomes visible.
Coherence is managed.
An extension, additional storey or dormer changes the light, circulation and use of the entire home. We therefore assess the result as an improvement to everyday living, considering the whole property.
Clear coordination between client, architect, structural engineer and site team allows important details to be resolved before construction. This keeps the project manageable and the finished architecture coherent.
An extension that improves light, flow and daily use while making the transition between original and new work feel effortless.
Start your renovationStructural connections
Loads, structural openings and supports must be buildable without unnecessary risks to the existing structure.
Water, airtightness and thermal bridges
Junctions between old and new receive particular attention to prevent leaks, draughts and condensation.
Architectural continuity
Dimensions, light, materials and sightlines make the additional space feel part of the original home.
Before you begin
Frequently asked questions.
What determines the cost of my renovation?
Existing condition, scope, structural alterations, building services and material choices together determine the investment. After an initial conversation and assessment, we develop the scope and costs. A budget range helps us advise you more precisely.
How is the programme determined?
The work, preparation, deliveries and availability determine the programme. We discuss your preferred start and agree on sequence and decision points before construction begins.
Do I already need drawings and permits?
You can contact us during the early planning stage. Tell us what is already available. We discuss which drawings, advisers and checks your project needs and who will prepare them.
Can the property remain occupied during the work?
This depends on the work and whether rooms and facilities can remain safely available. For major work, we discuss phasing and whether temporary accommodation or an interruption of use is needed.
Meet us
Do you have
plans?
Tell us what you have in mind. We will review the possibilities, approach and a realistic next step.
Start your renovation