🏗️ Annex Buildings
Residential & Rooftop Annexes
Expand your home — ground annexes, rooftop annexes, rooftop rooms, and commercial annexes. Engineered execution, municipal permits, and turnkey delivery with written warranty.
Annex Types
We build all annex types — choose what fits your needs
Ground Annex
Independent-entrance annex in the yard — for residential, office, or guest use.
Rooftop Annex
Annex above the roof — extra space with full privacy, ideal for a bedroom or office.
Rooftop Room
Economical rooftop room (sandwich panel) — fast execution and lower cost than traditional build.
Commercial Annex
Shop or commercial office in the yard — executed per municipal requirements.
Driver / Maid Room
Room with independent bathroom — full privacy and integrated or separate execution.
Home Extension
Adding a room or living space with independent columns and roof — without altering existing structure.
Our Process
From idea to handover
Site Visit
Free visit + measurement of available space + permit feasibility.
Design
2D/3D initial drawing — you choose from multiple design options.
Permits
We help obtain the municipal permit — documentation and follow-up.
Execution
Structure + water/thermal insulation + electrical & plumbing + full finishing.
Handover
Turnkey delivery + 5-year warranty + digital warranty card.
⚠️ Permit Required
Building annexes without a municipal permit exposes you to fines and demolition. We help you obtain the permit and follow up on the procedures.
Ready to Build Your Annex?
Free site visit + feasibility study + written quote