diff --git a/src/app/api/properties/[id]/delete/confirm/route.ts b/src/app/api/properties/[id]/delete/confirm/route.ts
new file mode 100644
index 0000000..39191ca
--- /dev/null
+++ b/src/app/api/properties/[id]/delete/confirm/route.ts
@@ -0,0 +1,30 @@
+import { NextResponse } from "next/server";
+import { deleteProperty } from "@/lib/services/propertyDeletion";
+
+export async function POST(
+  req: Request,
+  context: { params: Promise<{ id: string }> }
+) {
+  const { id } = await context.params;
+  const propertyId = Number(id);
+
+  if (Number.isNaN(propertyId)) {
+    return NextResponse.json({ error: "Invalid property id" }, { status: 400 });
+  }
+
+  const { confirm } = await req.json();
+
+  if (confirm !== true) {
+    return NextResponse.json(
+      { error: "Explicit confirmation required" },
+      { status: 400 }
+    );
+  }
+
+  await deleteProperty(propertyId);
+
+  return NextResponse.json({
+    success: true,
+    dryRun: true,
+  });
+}
diff --git a/src/app/api/properties/[id]/delete/preview/route.ts b/src/app/api/properties/[id]/delete/preview/route.ts
new file mode 100644
index 0000000..108b65b
--- /dev/null
+++ b/src/app/api/properties/[id]/delete/preview/route.ts
@@ -0,0 +1,13 @@
+import { NextResponse } from "next/server";
+import { previewPropertyDeletion } from "@/lib/services/propertyDeletion";
+
+export async function POST(
+  _req: Request,
+  context: { params: Promise<{ id: string }> }
+) {
+  const { id } = await context.params; // 👈 THIS IS THE FIX
+  const propertyId = Number(id);
+  const preview = await previewPropertyDeletion(propertyId);
+
+  return NextResponse.json({ preview });
+}
diff --git a/src/app/portfolio/[slug]/building-passport/[propertyId]/documents/MenuButton.tsx b/src/app/portfolio/[slug]/building-passport/[propertyId]/documents/MenuButton.tsx
index 16fbe11..758a4af 100644
--- a/src/app/portfolio/[slug]/building-passport/[propertyId]/documents/MenuButton.tsx
+++ b/src/app/portfolio/[slug]/building-passport/[propertyId]/documents/MenuButton.tsx
@@ -23,8 +23,8 @@ export const MenuButton: React.FC<Props> = ({ onView, onDelete }) => {
       <DropdownMenuContent align="end" className="w-32">
         <DropdownMenuItem onClick={onView}>View</DropdownMenuItem>
         <DropdownMenuItem
-          onClick={onDelete}
           className="text-red-600 focus:text-red-600"
+          onClick={onDelete}
         >
           Delete
         </DropdownMenuItem>
diff --git a/src/app/portfolio/[slug]/components/PropertyTable.tsx b/src/app/portfolio/[slug]/components/PropertyTable.tsx
index 12f7b01..dd6ba60 100644
--- a/src/app/portfolio/[slug]/components/PropertyTable.tsx
+++ b/src/app/portfolio/[slug]/components/PropertyTable.tsx
@@ -1,13 +1,22 @@
 "use client";
 
-import { useState, useMemo } from "react";
+import { useState, useMemo, useEffect } from "react";
 import { useProperties } from "./useProperties";
 import DataTable from "./dataTable";
 import PropertyFilters, { PropertyFilterValues } from "./PropertyFilters";
 import { PropertyFilter } from "@/app/utils/propertyFilters";
 import { HomeIcon } from "@heroicons/react/24/outline";
 import { columns } from "@/app/portfolio/[slug]/components/propertyTableColumns";
-import clsx from "clsx";
+
+import {
+  Dialog,
+  DialogContent,
+  DialogHeader,
+  DialogTitle,
+  DialogDescription,
+  DialogFooter,
+} from "@/app/shadcn_components/ui/dialog";
+import { Button } from "@/app/shadcn_components/ui/button";
 
 /* ----------------------------------------
    Filter parsing
@@ -85,7 +94,6 @@ export default function PropertyTable({
   });
 
   const parsedFilters = useMemo(() => parsePropertyFilters(filters), [filters]);
-
   const hasActiveFilters = parsedFilters.length > 0;
 
   const {
@@ -98,6 +106,82 @@ export default function PropertyTable({
     filters: parsedFilters,
   });
 
+  /* ----------------------------------------
+     Delete preview state
+  ----------------------------------------- */
+  const [deletePropertyId, setDeletePropertyId] = useState<number | null>(null);
+  const [deletePreview, setDeletePreview] = useState<
+    { table: string; count: number }[] | null
+  >(null);
+  const [previewLoading, setPreviewLoading] = useState(false);
+  const [previewError, setPreviewError] = useState<string | null>(null);
+  const [deleteLoading, setDeleteLoading] = useState(false);
+
+  /* ----------------------------------------
+     Fetch delete preview
+  ----------------------------------------- */
+  useEffect(() => {
+    if (!deletePropertyId) return;
+
+    console.log("[PREVIEW] fetching delete preview for:", deletePropertyId);
+
+    setPreviewLoading(true);
+    setPreviewError(null);
+    setDeletePreview(null);
+
+    fetch(`/api/properties/${deletePropertyId}/delete/preview`, {
+      method: "POST",
+    })
+      .then(async (res) => {
+        if (!res.ok) {
+          throw new Error("Failed to fetch delete preview");
+        }
+        return res.json();
+      })
+      .then((data) => {
+        console.log("[PREVIEW] result:", data.preview);
+        setDeletePreview(data.preview);
+      })
+      .catch((err) => {
+        console.error("[PREVIEW] error:", err);
+        setPreviewError(err.message);
+      })
+      .finally(() => {
+        setPreviewLoading(false);
+      });
+  }, [deletePropertyId]);
+
+  const handleConfirmDelete = async () => {
+    if (!deletePropertyId) return;
+
+    setDeleteLoading(true);
+
+    try {
+      console.log("[CONFIRM DELETE] sending request…");
+
+      const res = await fetch(
+        `/api/properties/${deletePropertyId}/delete/confirm`,
+        {
+          method: "POST",
+          headers: { "Content-Type": "application/json" },
+          body: JSON.stringify({ confirm: true }),
+        }
+      );
+
+      const data = await res.json();
+
+      console.log("[CONFIRM DELETE] response:", data);
+
+      // TEMP: just close modal after backend confirms
+      setDeletePropertyId(null);
+      setDeletePreview(null);
+    } catch (err) {
+      console.error("[CONFIRM DELETE] error:", err);
+    } finally {
+      setDeleteLoading(false);
+    }
+  };
+
   return (
     <div className="flex justify-center">
       <div className="grid grid-cols-11 w-full max-w-8xl">
@@ -105,7 +189,7 @@ export default function PropertyTable({
           {/* Filters */}
           <PropertyFilters onApply={setFilters} />
 
-          {/* Loading bar (HubSpot-style) */}
+          {/* Loading bar */}
           {isFetching && (
             <div className="h-1 w-full bg-gray-100 overflow-hidden">
               <div className="h-full w-1/3 bg-black animate-[loading_1.2s_infinite]" />
@@ -144,10 +228,97 @@ export default function PropertyTable({
           ) : data.length === 0 ? (
             <EmptyPropertyState />
           ) : (
-            <DataTable data={data} columns={columns} />
+            <DataTable
+              data={data}
+              columns={columns}
+              onDeleteProperty={(propertyId) => {
+                console.log("[META] onDeleteProperty fired:", propertyId);
+                setDeletePropertyId(propertyId);
+              }}
+            />
           )}
         </div>
       </div>
+
+      {/* ----------------------------------------
+         Delete preview modal
+      ----------------------------------------- */}
+      <Dialog
+        open={deletePropertyId !== null}
+        onOpenChange={(open) => {
+          if (!open) {
+            setDeletePropertyId(null);
+            setDeletePreview(null);
+            setPreviewError(null);
+          }
+        }}
+      >
+        <DialogContent>
+          <DialogHeader>
+            <DialogTitle>Delete property?</DialogTitle>
+            <DialogDescription>
+              {previewLoading
+                ? "Calculating what will be deleted…"
+                : "This action is permanent. Review the impact below."}
+            </DialogDescription>
+          </DialogHeader>
+
+          {/* Loading */}
+          {previewLoading && (
+            <div className="flex items-center gap-3 py-6">
+              <div className="h-5 w-5 animate-spin rounded-full border-2 border-muted border-t-foreground" />
+              <span className="text-sm text-muted-foreground">
+                Calculating deletion impact…
+              </span>
+            </div>
+          )}
+
+          {/* Error */}
+          {previewError && (
+            <p className="text-sm text-red-600">{previewError}</p>
+          )}
+
+          {/* Preview result */}
+          {deletePreview && !previewLoading && (
+            <ul className="space-y-1 text-sm">
+              {deletePreview.map((row) => (
+                <li key={row.table} className="flex justify-between">
+                  <span className="capitalize">
+                    {row.table.replace(/_/g, " ")}
+                  </span>
+                  <span className="font-medium">{row.count}</span>
+                </li>
+              ))}
+            </ul>
+          )}
+
+          <DialogFooter>
+            <Button
+              variant="ghost"
+              onClick={() => {
+                setDeletePropertyId(null);
+                setDeletePreview(null);
+              }}
+            >
+              Cancel
+            </Button>
+            <Button
+              variant="destructive"
+              disabled={!deletePreview || previewLoading || deleteLoading}
+              onClick={handleConfirmDelete}
+            >
+              {deleteLoading ? (
+                <span className="flex items-center gap-2">
+                  <span className="h-4 w-4 animate-spin rounded-full border-2 border-white border-t-transparent" />
+                  Deleting…
+                </span>
+              ) : (
+                "Confirm delete"
+              )}
+            </Button>
+          </DialogFooter>
+        </DialogContent>
+      </Dialog>
     </div>
   );
 }
diff --git a/src/app/portfolio/[slug]/components/dataTable.tsx b/src/app/portfolio/[slug]/components/dataTable.tsx
index 142cfc2..bdc81da 100644
--- a/src/app/portfolio/[slug]/components/dataTable.tsx
+++ b/src/app/portfolio/[slug]/components/dataTable.tsx
@@ -39,11 +39,13 @@ const fuzzyFilter: FilterFn<any> = (row, columnId, value, addMeta) => {
 interface DataTableProps<TData> {
   columns: ColumnDef<TData, any>[];
   data: TData[];
+  onDeleteProperty?: (propertyId: number) => void;
 }
 
 export default function DataTable<TData extends Record<string, any>>({
   data,
   columns,
+  onDeleteProperty,
 }: DataTableProps<TData>) {
   const [sorting, setSorting] = useState<SortingState>([]);
   const [columnFilters, setColumnFilters] = useState<ColumnFiltersState>([]);
@@ -77,6 +79,10 @@ export default function DataTable<TData extends Record<string, any>>({
       globalFilter,
       pagination,
     },
+
+    meta: {
+      onDeleteProperty,
+    },
   });
 
   return (
diff --git a/src/app/portfolio/[slug]/components/propertyTableColumns.tsx b/src/app/portfolio/[slug]/components/propertyTableColumns.tsx
index 3e274a3..8e26407 100644
--- a/src/app/portfolio/[slug]/components/propertyTableColumns.tsx
+++ b/src/app/portfolio/[slug]/components/propertyTableColumns.tsx
@@ -20,8 +20,10 @@ import { PortfolioStatus } from "@/app/db/schema/portfolio";
 import { PropertyWithRelations } from "@/app/db/schema/property";
 import { X } from "lucide-react";
 
-interface DataTableColumnHeaderProps<TData, TValue>
-  extends React.HTMLAttributes<HTMLDivElement> {
+interface DataTableColumnHeaderProps<
+  TData,
+  TValue,
+> extends React.HTMLAttributes<HTMLDivElement> {
   column: Column<TData, TValue>;
   title: string;
 }
@@ -277,7 +279,7 @@ export const columns: ColumnDef<PropertyWithRelations>[] = [
   },
   {
     id: "actions",
-    cell: ({ row }) => {
+    cell: ({ row, table }) => {
       const property = row.original;
       const propertyId = property.id;
       const portfolioId = property.portfolioId;
@@ -316,7 +318,14 @@ export const columns: ColumnDef<PropertyWithRelations>[] = [
                   Settings
                 </DropdownMenuItem>
                 <DropdownMenuSeparator />
-                <DropdownMenuItem className="text-red-500 focus:text-red-700 cursor-pointer">
+                <DropdownMenuItem
+                  className="text-red-500 focus:text-red-700 cursor-pointer"
+                  onClick={() => {
+                    console.log("[UI] Delete clicked for:", propertyId);
+
+                    table.options.meta?.onDeleteProperty?.(propertyId);
+                  }}
+                >
                   Delete Property
                 </DropdownMenuItem>
               </DropdownMenuContent>
diff --git a/src/app/types/tanstack-table.d.ts b/src/app/types/tanstack-table.d.ts
new file mode 100644
index 0000000..5347987
--- /dev/null
+++ b/src/app/types/tanstack-table.d.ts
@@ -0,0 +1,7 @@
+import "@tanstack/react-table";
+
+declare module "@tanstack/react-table" {
+  interface TableMeta<TData> {
+    onDeleteProperty?: (propertyId: number) => void;
+  }
+}
diff --git a/src/lib/services/propertyDeletion.ts b/src/lib/services/propertyDeletion.ts
new file mode 100644
index 0000000..83cb837
--- /dev/null
+++ b/src/lib/services/propertyDeletion.ts
@@ -0,0 +1,104 @@
+import { db } from "@/app/db/db";
+import { sql } from "drizzle-orm";
+
+export async function previewPropertyDeletion(propertyId: number) {
+  const id = sql`${propertyId}`;
+
+  const result = await db.execute(sql`
+    SELECT 'recommendation_materials' AS table, COUNT(*)::int AS count
+    FROM recommendation_materials rm
+    JOIN recommendation r ON rm.recommendation_id = r.id
+    WHERE r.property_id = ${id}
+
+    UNION ALL
+    SELECT 'plan_recommendations', COUNT(*)
+    FROM plan_recommendations pr
+    JOIN plan p ON pr.plan_id = p.id
+    WHERE p.property_id = ${id}
+
+    UNION ALL
+    SELECT 'funding_package_measures', COUNT(*)
+    FROM funding_package_measures fpm
+    JOIN funding_package fp ON fpm.funding_package_id = fp.id
+    JOIN plan p ON fp.plan_id = p.id
+    WHERE p.property_id = ${id}
+
+    UNION ALL
+    SELECT 'inspections', COUNT(*)
+    FROM inspections
+    WHERE property_id = ${id}
+
+    UNION ALL
+    SELECT 'recommendation', COUNT(*)
+    FROM recommendation
+    WHERE property_id = ${id}
+
+    UNION ALL
+    SELECT 'plan', COUNT(*)
+    FROM plan
+    WHERE property_id = ${id}
+
+    UNION ALL
+    SELECT 'property', COUNT(*)
+    FROM property
+    WHERE id = ${id};
+  `);
+
+  return result.rows;
+}
+
+export async function deleteProperty(propertyId: number) {
+  await db.transaction(async (tx) => {
+    await tx.execute(sql`
+      DELETE FROM property_details_epc
+      WHERE property_id = ${propertyId};
+    `);
+
+    await tx.execute(sql`
+      DELETE FROM property_targets
+      WHERE property_id = ${propertyId};
+    `);
+
+    await tx.execute(sql`
+      DELETE FROM recommendation_materials rm
+      USING recommendation r
+      WHERE rm.recommendation_id = r.id
+        AND r.property_id = ${propertyId};
+    `);
+
+    await tx.execute(sql`
+      DELETE FROM plan_recommendations pr
+      USING plan p
+      WHERE pr.plan_id = p.id
+        AND p.property_id = ${propertyId};
+    `);
+
+    await tx.execute(sql`
+      DELETE FROM funding_package_measures fpm
+      USING funding_package fp, plan p
+      WHERE fpm.funding_package_id = fp.id
+        AND fp.plan_id = p.id
+        AND p.property_id = ${propertyId};
+    `);
+
+    await tx.execute(sql`
+      DELETE FROM inspections
+      WHERE property_id = ${propertyId};
+    `);
+
+    await tx.execute(sql`
+      DELETE FROM recommendation
+      WHERE property_id = ${propertyId};
+    `);
+
+    await tx.execute(sql`
+      DELETE FROM plan
+      WHERE property_id = ${propertyId};
+    `);
+
+    await tx.execute(sql`
+      DELETE FROM property
+      WHERE id = ${propertyId};
+    `);
+  });
+}