Excluding the $11 million asset impairment adjustment, RH Segment gross margin would have increased 240 basis points to 51.4% of net revenues in the nine months ended October 29, 2022 from 49.0% of net revenues in the nine months ended October 30, 2021. The increase in gross margin was primarily driven by increase in product margins in the Core business, as well as leverage in our shipping costs, partially offset by deleverage in fixed occupancy costs during the nine months ended October 29, 2022.
Waterworks gross profit
Waterworks gross profit increased $18 million, or 28.8%, to $80 million in the nine months ended October 29, 2022 from $62 million in the nine months ended October 30, 2021. As a percentage of net revenues, Waterworks gross margin increased 400 basis points to 54.0% of net revenues in the nine months ended October 29, 2022 from 50.0% of net revenues in the nine months ended October 30, 2021 primarily driven by higher revenues, leverage in shipping and occupancy costs, as well as favorable changes in product mix.
Selling, general and administrative expenses
Consolidated selling, general and administrative expenses increased $142 million, or 20.6%, to $833 million in the nine months ended October 29, 2022 compared to $691 million in the nine months ended October 30, 2021.
RH Segment selling, general and administrative expenses
RH Segment selling, general and administrative expenses increased $130 million, or 20.2%, to $772 million in the nine months ended October 29, 2022 compared to $642 million in the nine months ended October 30, 2021. RH Segment selling, general and administrative expenses were 28.9% and 23.5% of net revenues for the nine months ended October 29, 2022 and October 30, 2021, respectively.
RH Segment selling, general and administrative expenses for the nine months ended October 29, 2022 include amortization of non-cash compensation of $14 million related to a fully vested option grant made to Mr. Friedman in October 2020, $12 million of employer payroll tax expense associated with Mr. Friedman’s stock option exercise during the first quarter of fiscal 2022, $7.5 million of professional fees which were contingent upon the completion of our debt transactions related to the 2023 Notes and 2024 Notes and $0.6 million related to product recalls, partially offset by a $4.2 million legal settlement received and a $0.8 million gain on sale of building and land.
RH Segment selling, general and administrative expenses for the nine months ended October 30, 2021 include amortization of non-cash compensation of $18 million related to a fully vested option grant made to Mr. Friedman in October 2020, $7.4 million related to asset impairments and $0.4 million related to severance costs and related payroll taxes associated with reorganizations.
The increase in selling, general and administrative expenses as a percentage of net revenues was primarily driven by higher employment and employment-related costs, increased advertising costs due to the mailing of the new RH Contemporary Source Book, the launch of The World of RH, as well as increases in professional fees. In addition, we incurred increased pre-opening and other corporate costs related to the opening of RH San Francisco and RH Guesthouse New York.
Waterworks selling, general and administrative expenses
Waterworks selling, general and administrative expenses increased $13 million, or 25.8%, to $61 million in the nine months ended October 29, 2022 compared to $48 million in the nine months ended October 30, 2021. Waterworks selling, general and administrative expenses were 41.3% and 39.2% of net revenues for the nine months ended October 29, 2022 and October 30, 2021, respectively.
Waterworks selling, general and administrative expenses for the nine months ended October 29, 2022 include $3.5 million in compensation settlements related to the Rollover Units and Profit Interest Units and a $0.2 million asset impairment. Waterworks selling, general and administrative expenses for the nine months ended October 30, 2021 include $0.8 million related to product recalls.
Excluding the adjustments mentioned above, Waterworks selling, general and administrative expenses would have been 38.9% and 38.5% of net revenues for the nine months ended October 29, 2022 and October 30, 2021, respectively.