Montage Hotels & Resorts has announced plans to open and operate a spa resort in Sonoma County, at the heart of California's wine country.

Montage Healdsburg – a property owned by Ohana Real Estate Investors and developed by The Robert Green Company – will feature 130 guestrooms and will have a focus on wellness and food.

Exact resort details are yet to be confirmed, but facilities include a large Spa Montage, offering outdoor massages and an infinity pool overlooking the resort's own vineyards.

Designed by GlazierLe, Delawie Architects and EDG Interior Design Firm, Montage Healdsburg will emphasise environmentally sensitive design coupled with a “wine country contemporary aesthetic”.

Construction work on the resort is set to begin later this year (2018), with an opening scheduled for 2020.

Alex Hill, executive vice president of development at Ohana Real Estate, said: “Montage Healdsburg will feature a contemporary design which respects and highlights the surrounding environment – featuring views of rolling hills, vineyards and heritage oak trees.”

• Montage Hotels is also set to open its first property outside the US later this year – a spa resort in Los Cabos, Mexico – for which plans were first announced in 2012. Once open, the Los Cabos property will become the sixth property operated by Montage.