The contractor will rebuild Ysgol Y Gogarth special education needs school on its existing site in Craig y Don, Llandudno.
Work starts on site in July and will take place in phases over two years. The scheme is designed by Atkins.
Willmott Dixon’s work to provide a new home for the 170-pupil school will see the company create a facility with new library, IT spaces, therapy rooms, hydro-pool, sports hall and vocational teaching areas.
The existing residential facilities will also be extensively refurbished to provide self-contained flats with a new entrance offering a clear division between school and home. The final phase will include improved vehicle access and parking, new grassed and multi-use sports pitches together with new habitat and recreation areas.
Regional managing director Anthony Dillon said: “We have built special needs schools across the country and will be applying all that experience here to deliver a superb new school for the region that provides very specialised learning.”