diff --git a/src/app/(protected)/workorders/_components/list/advanced-search/adv-filter-pill.tsx b/src/app/(protected)/workorders/_components/list/advanced-search/adv-filter-pill.tsx
new file mode 100644
index 00000000..5b7c3394
--- /dev/null
+++ b/src/app/(protected)/workorders/_components/list/advanced-search/adv-filter-pill.tsx
@@ -0,0 +1,78 @@
+import { DotTogglePill } from "@/components/ui/dot-toggle-pill";
+
+import { TogglePill } from "@/components/ui/toggle-pill";
+
+import { ToggleSegment } from "@/components/ui/toggle-segment";
+
+type AdvFilterPillProps = {
+  label: string;
+
+  selected: boolean;
+
+  onClick: () => void;
+
+  className?: string;
+};
+
+export function AdvFilterPill({ label, selected, onClick, className }: AdvFilterPillProps) {
+  return (
+    <TogglePill selected={selected} onClick={onClick} className={className}>
+      {label}
+    </TogglePill>
+  );
+}
+
+type AdvStatusPillProps = {
+  label: string;
+
+  dotColor: string;
+
+  selected: boolean;
+
+  selectedBg?: string;
+
+  selectedText?: string;
+
+  onClick: () => void;
+};
+
+export function AdvStatusPill({
+  label,
+
+  dotColor,
+
+  selected,
+
+  selectedBg,
+
+  selectedText,
+
+  onClick,
+}: AdvStatusPillProps) {
+  return (
+    <DotTogglePill
+      label={label}
+      dotColor={dotColor}
+      selected={selected}
+      selectedBg={selectedBg}
+      selectedText={selectedText}
+      onClick={onClick}
+    />
+  );
+}
+
+type AdvDocPillProps = {
+  label: string;
+
+  selected: boolean;
+
+  onClick: () => void;
+};
+
+export function AdvDocPill({ label, selected, onClick }: AdvDocPillProps) {
+  return (
+    <ToggleSegment selected={selected} onClick={onClick}>
+      {label}
+    </ToggleSegment>
+  );
+}
diff --git a/src/app/(protected)/workorders/_components/list/advanced-search/adv-multi-select.tsx b/src/app/(protected)/workorders/_components/list/advanced-search/adv-multi-select.tsx
new file mode 100644
index 00000000..f9f877aa
--- /dev/null
+++ b/src/app/(protected)/workorders/_components/list/advanced-search/adv-multi-select.tsx
@@ -0,0 +1,100 @@
+import { useState, type ReactNode } from "react";
+
+import { CheckboxListItem } from "@/components/ui/checkbox-list-item";
+
+import { SearchInput } from "@/components/ui/search-input";
+
+import { SelectAllAction } from "@/components/ui/select-all-action";
+
+type AdvMultiSelectOption = {
+  value: string;
+
+  label: string;
+};
+
+type AdvMultiSelectProps = {
+  options: AdvMultiSelectOption[];
+
+  selected: Set<string>;
+
+  onToggle: (value: string) => void;
+
+  onBulkToggle?: (values: string[], select: boolean) => void;
+
+  placeholder: string;
+
+  renderLeft?: (value: string) => ReactNode;
+};
+
+export function AdvMultiSelect({
+  options,
+
+  selected,
+
+  onToggle,
+
+  onBulkToggle,
+
+  placeholder,
+
+  renderLeft,
+}: AdvMultiSelectProps) {
+  const [query, setQuery] = useState("");
+
+  const list = query
+    ? options.filter((option) => option.label.toLowerCase().includes(query.toLowerCase()))
+    : options;
+
+  const anySelected = selected.size > 0;
+
+  return (
+    <div>
+      <SearchInput
+        value={query}
+        onChange={setQuery}
+        placeholder={placeholder}
+        fullWidth
+        className="mb-2"
+      />
+
+      <div className="mb-1.5 flex items-center justify-between">
+        <span className="text-[11px] text-muted-foreground">
+          {selected.size} of {options.length} selected
+        </span>
+
+        <SelectAllAction
+          anySelected={anySelected}
+          onClick={() =>
+            anySelected
+              ? onBulkToggle?.(
+                  options.map((option) => option.value),
+
+                  false,
+                )
+              : onBulkToggle?.(
+                  list.map((option) => option.value),
+
+                  true,
+                )
+          }
+        />
+      </div>
+
+      <div className="max-h-48 overflow-y-auto rounded-lg border border-border p-1">
+        {list.map((option) => (
+          <CheckboxListItem
+            key={option.value}
+            selected={selected.has(option.value)}
+            label={option.label}
+            left={renderLeft?.(option.value)}
+            onClick={() => onToggle(option.value)}
+          />
+        ))}
+
+        {list.length === 0 && (
+          <div className="px-2 py-3 text-center text-xs text-muted-foreground">No matches</div>
+        )}
+      </div>
+    </div>
+  );
+}
diff --git a/src/app/(protected)/workorders/_components/list/advanced-search/adv-section.tsx b/src/app/(protected)/workorders/_components/list/advanced-search/adv-section.tsx
new file mode 100644
index 00000000..f7195508
--- /dev/null
+++ b/src/app/(protected)/workorders/_components/list/advanced-search/adv-section.tsx
@@ -0,0 +1,19 @@
+import type { ElementType, ReactNode } from "react";
+
+import { CollapsibleSection } from "@/components/ui/collapsible-section";
+
+type AdvSectionProps = {
+  icon?: ElementType;
+
+  label: string;
+
+  count?: number;
+
+  defaultOpen?: boolean;
+
+  children: ReactNode;
+};
+
+export function AdvSection(props: AdvSectionProps) {
+  return <CollapsibleSection {...props} />;
+}
diff --git a/src/app/(protected)/workorders/_components/list/advanced-search/adv-type-grid.tsx b/src/app/(protected)/workorders/_components/list/advanced-search/adv-type-grid.tsx
new file mode 100644
index 00000000..b1762731
--- /dev/null
+++ b/src/app/(protected)/workorders/_components/list/advanced-search/adv-type-grid.tsx
@@ -0,0 +1,43 @@
+import { SelectAllAction } from "@/components/ui/select-all-action";
+
+import { ToggleCard } from "@/components/ui/toggle-card";
+
+import {
+  WO_TYPE_DESCRIPTIONS,
+  WO_TYPES,
+} from "@/domain/work-orders/types/work-order-advanced-filters";
+
+import type { WOType } from "@/domain/work-orders/types/work-order-wizard";
+
+type AdvTypeGridProps = {
+  selected: Set<WOType>;
+
+  onToggle: (type: WOType) => void;
+
+  onSelectAll: (types: WOType[], select: boolean) => void;
+};
+
+export function AdvTypeGrid({ selected, onToggle, onSelectAll }: AdvTypeGridProps) {
+  return (
+    <>
+      <div className="mb-2 flex justify-end">
+        <SelectAllAction
+          anySelected={selected.size > 0}
+          onClick={() => onSelectAll([...WO_TYPES], selected.size === 0)}
+        />
+      </div>
+
+      <div className="grid grid-cols-2 gap-2">
+        {WO_TYPES.map((type) => (
+          <ToggleCard
+            key={type}
+            selected={selected.has(type)}
+            title={type}
+            description={WO_TYPE_DESCRIPTIONS[type]}
+            onClick={() => onToggle(type)}
+          />
+        ))}
+      </div>
+    </>
+  );
+}
diff --git a/src/app/(protected)/workorders/_components/list/advanced-search/work-orders-advanced-search-sheet.tsx b/src/app/(protected)/workorders/_components/list/advanced-search/work-orders-advanced-search-sheet.tsx
new file mode 100644
index 00000000..06a3b283
--- /dev/null
+++ b/src/app/(protected)/workorders/_components/list/advanced-search/work-orders-advanced-search-sheet.tsx
@@ -0,0 +1,273 @@
+import { useEffect, useState } from "react";
+import {
+  CalendarDays,
+  CheckCircle2,
+  FileText,
+  Flame,
+  MapPin,
+  SlidersHorizontal,
+  Tag,
+  Truck,
+  UserX,
+  Users,
+} from "lucide-react";
+import { AdvDocPill, AdvFilterPill, AdvStatusPill } from "./adv-filter-pill";
+import { AdvMultiSelect } from "./adv-multi-select";
+import { AdvSection } from "./adv-section";
+import { AdvTypeGrid } from "./adv-type-grid";
+import { Button } from "@/components/ui/button";
+import { DateField } from "@/components/ui/date-input";
+import { IconCloseButton } from "@/components/ui/icon-close-button";
+import { SelectAllAction } from "@/components/ui/select-all-action";
+import { SideSheet } from "@/components/ui/side-sheet";
+import {
+  ALL_WIZARD_STATUSES,
+  ASSIGNEE_FILTER_UNASSIGNED,
+  COMPLETION_DOC_OPTIONS,
+  DATE_RANGE_OPTIONS,
+  DOC_FILTER_LABELS,
+  EMPTY_ADVANCED_FILTERS,
+  type AdvancedFilterSetKey,
+  type WorkOrderAdvancedFilters,
+} from "@/domain/work-orders/types/work-order-advanced-filters";
+import type { WorkOrderUser } from "@/domain/work-orders/types/work-order";
+import { WIZARD_STATUS_DOTS } from "@/domain/work-orders/types/work-order-wizard";
+import {
+  cloneAdvancedFilters,
+  countAdvancedFilters,
+  isDefaultDateRange,
+} from "@/domain/work-orders/utils/advanced-filters-utils";
+
+type WorkOrdersAdvancedSearchSheetProps = {
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+  initial: WorkOrderAdvancedFilters;
+  onApply: (filters: WorkOrderAdvancedFilters) => void;
+  onClearAll: () => void;
+  sites: { id: string | number; name: string }[];
+  users: WorkOrderUser[];
+  pmTypes: string[];
+  vendorTechs: string[];
+};
+
+export function WorkOrdersAdvancedSearchSheet({
+  open,
+  onOpenChange,
+  initial,
+  onApply,
+  onClearAll,
+  sites,
+  users,
+  pmTypes,
+  vendorTechs,
+}: WorkOrdersAdvancedSearchSheetProps) {
+  const [draft, setDraft] = useState<WorkOrderAdvancedFilters>(initial);
+
+  useEffect(() => {
+    if (open) {
+      setDraft(cloneAdvancedFilters(initial));
+    }
+  }, [open, initial]);
+
+  const activeCount = countAdvancedFilters(draft);
+
+  const toggleIn = (key: AdvancedFilterSetKey, value: string) => {
+    setDraft((prev) => {
+      const next = new Set(prev[key] as Set<string>);
+      if (next.has(value)) {
+        next.delete(value);
+      } else {
+        next.add(value);
+      }
+      return { ...prev, [key]: next };
+    });
+  };
+
+  const setMany = (key: AdvancedFilterSetKey, values: string[], select: boolean) => {
+    setDraft((prev) => {
+      const next = new Set(prev[key] as Set<string>);
+      values.forEach((value) => (select ? next.add(value) : next.delete(value)));
+      return { ...prev, [key]: next };
+    });
+  };
+
+  const selectAllRow = (key: AdvancedFilterSetKey, all: string[], selectedSize: number) => (
+    <div className="mb-2 flex justify-end">
+      <SelectAllAction
+        anySelected={selectedSize > 0}
+        onClick={() => setMany(key, all, selectedSize === 0)}
+      />
+    </div>
+  );
+
+  const handleClearAll = () => {
+    setDraft(cloneAdvancedFilters(EMPTY_ADVANCED_FILTERS));
+    onClearAll();
+  };
+
+  const handleApply = () => {
+    onApply(cloneAdvancedFilters(draft));
+    onOpenChange(false);
+  };
+
+  return (
+    <SideSheet open={open} onClose={() => onOpenChange(false)} aria-label="Advanced Filters">
+      <span className="sr-only">Advanced Filters</span>
+
+      <div className="flex h-14 shrink-0 items-center justify-between border-b border-border px-4">
+        <div className="flex items-baseline gap-2">
+          <span className="flex items-center gap-2">
+            <SlidersHorizontal size={16} className="text-primary" />
+            <span className="font-display text-[15px] font-bold text-foreground">
+              Advanced Filters
+            </span>
+          </span>
+          {activeCount > 0 && (
+            <span className="text-xs text-muted-foreground">· {activeCount} active</span>
+          )}
+        </div>
+        <IconCloseButton onClick={() => onOpenChange(false)} />
+      </div>
+
+      <div className="min-h-0 flex-1 overflow-y-auto px-4">
+        <AdvSection
+          icon={CalendarDays}
+          label="Date range"
+          count={isDefaultDateRange(draft.dateRange) ? 0 : 1}
+        >
+          <div className="flex flex-wrap gap-1.5">
+            {DATE_RANGE_OPTIONS.map((option) => (
+              <AdvFilterPill
+                key={option.key}
+                label={option.label}
+                selected={draft.dateRange === option.key}
+                onClick={() => setDraft((prev) => ({ ...prev, dateRange: option.key }))}
+              />
+            ))}
+          </div>
+          {draft.dateRange === "custom" && (
+            <div className="mt-2.5 flex items-center gap-2">
+              <DateField
+                label="From"
+                value={draft.customFrom}
+                onChange={(value) => setDraft((prev) => ({ ...prev, customFrom: value }))}
+              />
+              <DateField
+                label="To"
+                value={draft.customTo}
+                onChange={(value) => setDraft((prev) => ({ ...prev, customTo: value }))}
+              />
+            </div>
+          )}
+        </AdvSection>
+
+        <AdvSection icon={MapPin} label="Site" count={draft.sites.size}>
+          <AdvMultiSelect
+            options={sites.map((site) => ({
+              value: String(site.id),
+              label: site.name,
+            }))}
+            selected={draft.sites}
+            onToggle={(value) => toggleIn("sites", value)}
+            onBulkToggle={(values, select) => setMany("sites", values, select)}
+            placeholder="Search site…"
+          />
+        </AdvSection>
+
+        <AdvSection icon={Tag} label="Type of WO" count={draft.types.size}>
+          <AdvTypeGrid
+            selected={draft.types}
+            onToggle={(type) => toggleIn("types", type)}
+            onSelectAll={(types, select) => setMany("types", types, select)}
+          />
+        </AdvSection>
+
+        <AdvSection icon={Users} label="Assigned to" count={draft.dispatchers.size}>
+          <AdvMultiSelect
+            options={[
+              { value: ASSIGNEE_FILTER_UNASSIGNED, label: "Unassigned" },
+              ...users.map((user) => ({ value: String(user.id), label: user.name })),
+            ]}
+            selected={draft.dispatchers}
+            onToggle={(value) => toggleIn("dispatchers", value)}
+            onBulkToggle={(values, select) => setMany("dispatchers", values, select)}
+            placeholder="Search assigned to…"
+            renderLeft={(id) =>
+              id === ASSIGNEE_FILTER_UNASSIGNED ? (
+                <UserX size={14} className="shrink-0 text-muted-foreground" />
+              ) : (
+                <span className="size-2 shrink-0 rounded-full bg-muted-foreground" />
+              )
+            }
+          />
+        </AdvSection>
+
+        <AdvSection icon={CheckCircle2} label="Status" count={draft.statuses.size}>
+          {selectAllRow("statuses", [...ALL_WIZARD_STATUSES], draft.statuses.size)}
+          <div className="flex flex-wrap gap-1.5">
+            {ALL_WIZARD_STATUSES.map((status) => (
+              <AdvStatusPill
+                key={status}
+                label={status}
+                dotColor={WIZARD_STATUS_DOTS[status]}
+                selected={draft.statuses.has(status)}
+                selectedBg="var(--color-primary-tint)"
+                onClick={() => toggleIn("statuses", status)}
+              />
+            ))}
+          </div>
+        </AdvSection>
+
+        <AdvSection icon={Flame} label="PM type" count={draft.pmTypes.size}>
+          <AdvMultiSelect
+            options={pmTypes.map((pmType) => ({ value: pmType, label: pmType }))}
+            selected={draft.pmTypes}
+            onToggle={(value) => toggleIn("pmTypes", value)}
+            onBulkToggle={(values, select) => setMany("pmTypes", values, select)}
+            placeholder="Search pm type…"
+          />
+        </AdvSection>
+
+        <AdvSection icon={Truck} label="Vendor / tech" count={draft.vendorTechs.size}>
+          <AdvMultiSelect
+            options={vendorTechs.map((name) => ({ value: name, label: name }))}
+            selected={draft.vendorTechs}
+            onToggle={(value) => toggleIn("vendorTechs", value)}
+            onBulkToggle={(values, select) => setMany("vendorTechs", values, select)}
+            placeholder="Search vendor / tech…"
+          />
+        </AdvSection>
+
+        <AdvSection icon={FileText} label="Completion doc" count={draft.docs.size}>
+          {selectAllRow("docs", [...COMPLETION_DOC_OPTIONS], draft.docs.size)}
+          <div className="flex items-center gap-2">
+            {COMPLETION_DOC_OPTIONS.map((doc) => (
+              <AdvDocPill
+                key={doc}
+                label={DOC_FILTER_LABELS[doc]}
+                selected={draft.docs.has(doc)}
+                onClick={() => toggleIn("docs", doc)}
+              />
+            ))}
+          </div>
+        </AdvSection>
+      </div>
+
+      <div className="flex shrink-0 items-center gap-2 border-t border-border px-4 py-3">
+        <Button variant="ghost" className="text-xs" onClick={handleClearAll}>
+          Clear all
+        </Button>
+        <div className="flex flex-1 justify-center">
+          {activeCount > 0 && (
+            <span className="text-xs font-medium text-muted-foreground">
+              {activeCount} filter set
+            </span>
+          )}
+        </div>
+        <Button className="px-5 text-xs" onClick={handleApply}>
+          Apply filters
+        </Button>
+      </div>
+    </SideSheet>
+  );
+}
diff --git a/src/app/(protected)/workorders/index.tsx b/src/app/(protected)/workorders/index.tsx
index 66eecc87..5f28f6d2 100644
--- a/src/app/(protected)/workorders/index.tsx
+++ b/src/app/(protected)/workorders/index.tsx
@@ -3,6 +3,7 @@ import { Box } from "@mui/material";
 import { useNavigate } from "react-router";
 import { PageHeader } from "@/components/ui/page-header";
 import { MediaUploadModal } from "@/app/(protected)/workorders/_components/media/media-upload-modal";
+import { WorkOrdersAdvancedSearchSheet } from "@/app/(protected)/workorders/_components/list/advanced-search/work-orders-advanced-search-sheet";
 import { WorkOrdersAdvancedFiltersBanner } from "@/app/(protected)/workorders/_components/list/work-orders-advanced-filters-banner";
 import { WorkOrdersFilterBar } from "@/app/(protected)/workorders/_components/list/filter-bar/work-orders-filter-bar";
 import { WorkOrdersListHeader } from "@/app/(protected)/workorders/_components/list/work-orders-list-header";
@@ -44,6 +45,11 @@ export default function WorkOrdersListPage() {
     [problemOptions],
   );
 
+  const vendorTechs = useMemo(
+    () => [...new Set(vendors.map((vendor) => vendor.companyName).filter(Boolean))],
+    [vendors],
+  );
+
   const totalCount = tableData.totalCount;
   const scopeTotalCount = tableData.scopeTotalCount;
 
@@ -62,6 +68,7 @@ export default function WorkOrdersListPage() {
           <WorkOrdersListHeader
             search={filters.search}
             onSearchChange={filters.handleSearchChange}
+            onOpenAdvancedFilters={() => filters.setAdvOpen(true)}
             activeFilterCount={filters.activeFilterCount}
             isFetching={tableData.isFetching && !tableData.isLoading}
           />
@@ -104,6 +111,19 @@ export default function WorkOrdersListPage() {
         }}
         onOpenMedia={setMediaRow}
         onClearSearch={() => filters.handleSearchChange("")}
+        onOpenAdvancedFilters={() => filters.setAdvOpen(true)}
+      />
+
+      <WorkOrdersAdvancedSearchSheet
+        open={filters.advOpen}
+        onOpenChange={filters.setAdvOpen}
+        initial={filters.advInitial}
+        onApply={filters.applyAdvancedFilters}
+        onClearAll={filters.clearAdvancedFilters}
+        sites={locations}
+        users={users}
+        pmTypes={pmTypes}
+        vendorTechs={vendorTechs}
       />
 
       {activeMediaRow != null && (
diff --git a/src/test/app/(protected)/workorders/work-orders-advanced-search-wiring.test.tsx b/src/test/app/(protected)/workorders/work-orders-advanced-search-wiring.test.tsx
new file mode 100644
index 00000000..ab94481a
--- /dev/null
+++ b/src/test/app/(protected)/workorders/work-orders-advanced-search-wiring.test.tsx
@@ -0,0 +1,154 @@
+import { fireEvent, screen, within } from "@testing-library/react";
+import { beforeEach, describe, expect, it, vi } from "vitest";
+import WorkOrdersListPage from "@/app/(protected)/workorders/index";
+import { EMPTY_ADVANCED_FILTERS } from "@/domain/work-orders/types/work-order-advanced-filters";
+import { renderWithProviders } from "@/test/test-utils";
+
+const setAdvOpen = vi.fn();
+const applyAdvancedFilters = vi.fn();
+const clearAdvancedFilters = vi.fn();
+let advOpen = false;
+let advApplied: typeof EMPTY_ADVANCED_FILTERS | null = null;
+
+vi.mock("react-router", async () => {
+  const actual = await vi.importActual<typeof import("react-router")>("react-router");
+  return {
+    ...actual,
+    useNavigate: () => vi.fn(),
+  };
+});
+
+vi.mock("@/providers/auth-context", () => ({
+  useAuthContext: () => ({ user: { id: "u1" } }),
+}));
+
+vi.mock("@/app/(protected)/workorders/_hooks/use-work-orders-list-filters", () => ({
+  useWorkOrdersListFilters: () => ({
+    search: "",
+    handleSearchChange: vi.fn(),
+    advOpen,
+    setAdvOpen: (open: boolean) => {
+      advOpen = open;
+      setAdvOpen(open);
+    },
+    advApplied,
+    advInitial: advApplied ?? EMPTY_ADVANCED_FILTERS,
+    applyAdvancedFilters: (filters: typeof EMPTY_ADVANCED_FILTERS) => {
+      advApplied = filters;
+      applyAdvancedFilters(filters);
+    },
+    clearAdvancedFilters: () => {
+      advApplied = null;
+      clearAdvancedFilters();
+    },
+    clearAdvancedFilterChip: vi.fn(),
+    activeFilterCount: advApplied ? 1 : 0,
+    weekMonday: "2026-07-20",
+    setWeekMonday: vi.fn(),
+    dispatcherIds: new Set<string>(),
+    setDispatcherIds: vi.fn(),
+    typeFilter: "All",
+    setTypeFilter: vi.fn(),
+  }),
+}));
+
+vi.mock("@/app/(protected)/workorders/_hooks/use-work-orders-table-data", () => ({
+  useWorkOrdersTableData: () => ({
+    rows: [],
+    totalCount: 0,
+    scopeTotalCount: 0,
+    isFetching: false,
+    isLoading: false,
+    setSelectedId: vi.fn(),
+    patchRow: vi.fn(),
+  }),
+}));
+
+vi.mock("@/domain/work-orders/use-cases/use-work-order-table-mutations", () => ({
+  useWorkOrderTableMutations: () => ({ patchField: vi.fn() }),
+}));
+
+vi.mock("@/domain/work-orders/use-cases/use-work-orders-list", () => ({
+  useWorkOrderUsers: () => ({
+    data: [{ id: "u1", name: "Dispatcher One" }],
+  }),
+}));
+
+vi.mock("@/domain/work-orders/use-cases/use-work-order-detail", () => ({
+  useWorkOrderLocations: () => ({
+    data: [{ id: "loc-1", name: "Seattle" }],
+  }),
+  useWorkOrderVendors: () => ({
+    data: [{ companyName: "Vendor Co", email: "real@vendor.com" }],
+  }),
+}));
+
+vi.mock("@/domain/settings/dropdown-options/use-cases/use-dropdown-options-by-category", () => ({
+  useDropdownOptionsByCategory: () => ({ data: [{ value: "HVAC" }] }),
+}));
+
+vi.mock("@/domain/work-orders/mocks/is-wo-table-mock-enabled", () => ({
+  isWoTableMockEnabled: () => false,
+}));
+
+vi.mock("@/app/(protected)/workorders/_components/list/table/wo-table", () => ({
+  WoTable: () => null,
+}));
+
+vi.mock("@/app/(protected)/workorders/_components/list/filter-bar/work-orders-filter-bar", () => ({
+  WorkOrdersFilterBar: () => null,
+}));
+
+vi.mock("@/app/(protected)/workorders/_components/media/media-upload-modal", () => ({
+  MediaUploadModal: () => null,
+}));
+
+describe("WorkOrders Advanced Search page wiring (SH-121)", () => {
+  beforeEach(() => {
+    advOpen = false;
+    advApplied = null;
+    setAdvOpen.mockClear();
+    applyAdvancedFilters.mockClear();
+    clearAdvancedFilters.mockClear();
+  });
+
+  it("opens the sheet from Advanced Filters, applies, then clears", () => {
+    const view = renderWithProviders(<WorkOrdersListPage />, {
+      route: "/workorders",
+      withAuth: false,
+    });
+
+    expect(screen.queryByRole("button", { name: /apply filters/i })).not.toBeInTheDocument();
+
+    fireEvent.click(screen.getByRole("button", { name: "Advanced Filters" }));
+    expect(setAdvOpen).toHaveBeenCalledWith(true);
+
+    advOpen = true;
+    view.rerender(<WorkOrdersListPage />);
+
+    const sheet = screen.getByRole("dialog", { name: "Advanced Filters" });
+    expect(within(sheet).getByRole("button", { name: /apply filters/i })).toBeInTheDocument();
+
+    // Expand filter sections that start collapsed and assert option inputs are wired.
+    for (const label of ["Site", "Assigned to", "PM type", "Vendor / tech"]) {
+      fireEvent.click(within(sheet).getByRole("button", { name: new RegExp(label, "i") }));
+    }
+    expect(within(sheet).getByText("Seattle")).toBeInTheDocument();
+    expect(within(sheet).getByText("Dispatcher One")).toBeInTheDocument();
+    expect(within(sheet).getByText("HVAC")).toBeInTheDocument();
+    expect(within(sheet).getByText("Vendor Co")).toBeInTheDocument();
+
+    fireEvent.click(within(sheet).getByRole("button", { name: /apply filters/i }));
+    expect(applyAdvancedFilters).toHaveBeenCalled();
+    expect(setAdvOpen).toHaveBeenCalledWith(false);
+
+    advOpen = true;
+    view.rerender(<WorkOrdersListPage />);
+    fireEvent.click(
+      within(screen.getByRole("dialog", { name: "Advanced Filters" })).getByRole("button", {
+        name: /clear all/i,
+      }),
+    );
+    expect(clearAdvancedFilters).toHaveBeenCalled();
+  });
+});
diff --git a/src/test/app/(protected)/workorders/work-orders-board-core-affordances.test.tsx b/src/test/app/(protected)/workorders/work-orders-board-core-affordances.test.tsx
index effb2edc..1dcae791 100644
--- a/src/test/app/(protected)/workorders/work-orders-board-core-affordances.test.tsx
+++ b/src/test/app/(protected)/workorders/work-orders-board-core-affordances.test.tsx
@@ -25,10 +25,24 @@ vi.mock("@/app/(protected)/workorders/_hooks/use-work-orders-list-filters", () =
     search: "",
     handleSearchChange: vi.fn(),
     setAdvOpen: vi.fn(),
-    activeFilterCount: 0,
+    advOpen: false,
     advApplied: null,
-    clearAdvancedFilterChip: vi.fn(),
+    advInitial: {
+      dateRange: "this-week",
+      customFrom: "",
+      customTo: "",
+      sites: new Set(),
+      types: new Set(),
+      dispatchers: new Set(),
+      statuses: new Set(),
+      pmTypes: new Set(),
+      vendorTechs: new Set(),
+      docs: new Set(),
+    },
+    applyAdvancedFilters: vi.fn(),
     clearAdvancedFilters: vi.fn(),
+    clearAdvancedFilterChip: vi.fn(),
+    activeFilterCount: 0,
     weekMonday: "2026-07-20",
     setWeekMonday: vi.fn(),
     dispatcherIds: new Set<string>(),
@@ -165,13 +179,12 @@ describe("WorkOrdersListHeader slice affordances", () => {
 });
 
 describe("WorkOrdersListPage board-core public interface", () => {
-  it("does not render New WO or Advanced Filters, and View navigates to detail", () => {
+  it("does not render New WO, and View navigates to detail", () => {
     navigate.mockReset();
 
     renderWithProviders(<WorkOrdersListPage />, { route: "/workorders", withAuth: false });
 
     expect(screen.queryByRole("button", { name: /new wo/i })).not.toBeInTheDocument();
-    expect(screen.queryByLabelText("Advanced Filters")).not.toBeInTheDocument();
     expect(screen.queryByRole("button", { name: /view doc|draft/i })).not.toBeInTheDocument();
 
     fireEvent.click(screen.getByRole("button", { name: /view canceled row/i }));