The increase in RH Segment net revenues for the three months ended October 30, 2021 was driven primarily by continued strong customer demand for our products, aided by elements of our supply chain beginning to catch up with customer demand.
Outlet sales increased $14.4 million to $77.2 million in the three months ended October 30, 2021 compared to $62.8 million in the three months ended October 31, 2020. Additionally, RH Segment net revenues increased in our RH Hospitality business compared to the three months ended October 31, 2020 due to reduced operational restrictions in the third quarter of fiscal 2021 and new Restaurant openings in fiscal 2021.
Waterworks net revenues
Waterworks net revenues increased $10.3 million, or 33.1%, to $41.6 million in the three months ended October 30, 2021 compared to $31.2 million in the three months ended October 31, 2020 due to an increase in demand related to resumed construction activity and significant residential investments by high-end homeowners. Waterworks net revenues for the three months ended October 31, 2020 was negatively impacted by construction delays, as well as temporary showroom closures, in response to the pandemic.
Gross profit
Consolidated gross profit increased $96.9 million, or 23.7%, to $505.3 million in the three months ended October 30, 2021 compared to $408.3 million in the three months ended October 31, 2020. As a percentage of net revenues, consolidated gross margin increased 180 basis points to 50.2% of net revenues in the three months ended October 30, 2021 from 48.4% of net revenues in the three months ended October 31, 2020.
RH Segment gross profit
RH Segment gross profit increased $89.7 million, or 22.7%, to $484.4 million in the three months ended October 30, 2021 from $394.7 million in the three months ended October 31, 2020. As a percentage of net revenues, RH Segment gross margin increased 160 basis points to 50.2% of net revenues in the three months ended October 30, 2021 from 48.6% of net revenues in the three months ended October 31, 2020. The increase in gross margin was primarily driven by higher product margins in the Core business in the three months ended October 30, 2021.
Waterworks gross profit
Waterworks gross profit increased $7.3 million, or 53.1%, to $20.9 million in the three months ended October 30, 2021 from $13.6 million in the three months ended October 31, 2020. As a percentage of net revenues, Waterworks gross margin increased 660 basis points to 50.3% of net revenues in the three months ended October 30, 2021 from 43.7% of net revenues in the three months ended October 31, 2020 primarily driven by higher revenues, favorable changes in product mix, and leverage in Waterworks occupancy costs, offset by an increase in shipping costs related to customer deliveries.
Selling, general and administrative expenses
Consolidated selling, general and administrative expenses decreased $64.4 million, or 21.7%, to $232.7 million in the three months ended October 30, 2021 compared to $297.1 million in the three months ended October 31, 2020.
RH Segment selling, general and administrative expenses
RH Segment selling, general and administrative expenses decreased $71.6 million, or 25.1%, to $214.1 million in the three months ended October 30, 2021 compared $285.7 million in the three months ended October 31, 2020.
RH Segment selling, general and administrative expenses for the three months ended October 30, 2021 include amortization of the non-cash compensation of $5.8 million related to a fully vested option grant made to Mr. Friedman in October 2020. RH Segment selling, general and administrative expenses for the three months ended October 31, 2020 includes a non-cash compensation charge of $111.2 million due to a fully vested option grant made to Mr. Friedman in October 2020, $1.3 million due to accelerated asset depreciation and $0.8 million due to asset impairments.
Excluding the adjustments mentioned above, RH Segment selling, general and administrative expenses would have been 21.6% and 21.2% of net revenues for the three months ended October 30, 2021 and October 31, 2020, respectively. The increase in selling, general and administrative expenses as a percentage of net revenues was primarily driven by increases in travel-related expenses and preopening costs associated with Gallery openings, partially offset by leverage in compensation and advertising costs.