The Westin Maui Resort & Spa in Hawaii, US, is set to undergo a US$55m (€40m, £32m) facelift that includes a new landscaping facility, conversion of a convention hall into an expanded ballroom and upgrades to its existing spa.

Construction is expected to last 30 months, according to a draft environmental assessment for the proposed renovation, but the start date has not yet been determined as it is still in the permitting process.

The resort’s existing 15,000sq ft (1,394sq m) Heavenly Spa by Westin is an oceanfront facility that features 16 treatment rooms, a relaxation lounge, a Westin fitness studio, a studio for yoga, Pilates and meditation, in addition to a full-service salon.

The men and women’s locker rooms each include their own whirlpools, steamroom and sauna.

The spa carries a signature product line called Hualini, which consists of locally grown ingredients such as extracts from pineapples and passion fruit.

The 759-key Westin Maui, which is located in the Kaanapali Resort in Lahaina, also recently completed a US$50m (€37m, £29m) renovation of its main accommodation tower, The Ocean Tower, according to bizjournals.com. This refurbishment took place over a period of six months.

The James Campbell Company owns the land on which the resort is built and Starwood affiliate Westin Maui is the lessee of the property in Maui.