diff --git a/internal/handler/space_settings_handler.go b/internal/handler/space_settings_handler.go
index 797810b..b0239e4 100644
--- a/internal/handler/space_settings_handler.go
+++ b/internal/handler/space_settings_handler.go
@@ -271,6 +271,42 @@ func (h *SpaceSettingsHandler) CreateInvite(w http.ResponseWriter, r *http.Reque
 	}))
 }
 
+func (h *SpaceSettingsHandler) DeleteSpace(w http.ResponseWriter, r *http.Request) {
+	spaceID := r.PathValue("spaceID")
+	user := ctxkeys.User(r.Context())
+
+	space, err := h.spaceService.GetSpace(spaceID)
+	if err != nil {
+		http.Error(w, "Space not found", http.StatusNotFound)
+		return
+	}
+
+	if space.OwnerID != user.ID {
+		http.Error(w, "Forbidden", http.StatusForbidden)
+		return
+	}
+
+	if err := r.ParseForm(); err != nil {
+		ui.RenderError(w, r, "Bad Request", http.StatusUnprocessableEntity)
+		return
+	}
+
+	confirmationName := r.FormValue("confirmation_name")
+	if confirmationName != space.Name {
+		ui.RenderError(w, r, "Space name does not match", http.StatusUnprocessableEntity)
+		return
+	}
+
+	if err := h.spaceService.DeleteSpace(spaceID); err != nil {
+		slog.Error("failed to delete space", "error", err, "space_id", spaceID)
+		http.Error(w, "Internal Server Error", http.StatusInternalServerError)
+		return
+	}
+
+	w.Header().Set("HX-Redirect", "/app/spaces")
+	w.WriteHeader(http.StatusOK)
+}
+
 func (h *SpaceSettingsHandler) JoinSpace(w http.ResponseWriter, r *http.Request) {
 	token := r.PathValue("token")
 	user := ctxkeys.User(r.Context())
diff --git a/internal/repository/space.go b/internal/repository/space.go
index 3c06671..a1b4f6b 100644
--- a/internal/repository/space.go
+++ b/internal/repository/space.go
@@ -23,6 +23,7 @@ type SpaceRepository interface {
 	GetMembers(spaceID string) ([]*model.SpaceMemberWithProfile, error)
 	UpdateName(spaceID, name string) error
 	UpdateTimezone(spaceID, timezone string) error
+	Delete(spaceID string) error
 }
 
 type spaceRepository struct {
@@ -135,3 +136,9 @@ func (r *spaceRepository) UpdateTimezone(spaceID, timezone string) error {
 	_, err := r.db.Exec(query, timezone, time.Now(), spaceID)
 	return err
 }
+
+func (r *spaceRepository) Delete(spaceID string) error {
+	query := `DELETE FROM spaces WHERE id = $1;`
+	_, err := r.db.Exec(query, spaceID)
+	return err
+}
diff --git a/internal/routes/routes.go b/internal/routes/routes.go
index 0a23b2c..9a4fbef 100644
--- a/internal/routes/routes.go
+++ b/internal/routes/routes.go
@@ -154,6 +154,7 @@ func SetupRoutes(a *app.App) http.Handler {
 	spaceRouteLimited(mux, sa, cl, "DELETE /app/spaces/{spaceID}/invites/{token}", spaceSettings.CancelInvite)
 	spaceRoute(mux, sa, "GET /app/spaces/{spaceID}/settings/invites", spaceSettings.GetPendingInvites)
 	spaceRouteLimited(mux, sa, cl, "POST /app/spaces/{spaceID}/invites", spaceSettings.CreateInvite)
+	spaceRouteLimited(mux, sa, cl, "DELETE /app/spaces/{spaceID}", spaceSettings.DeleteSpace)
 
 	// Loans
 	spaceRoute(mux, sa, "GET /app/spaces/{spaceID}/loans", space.LoansPage)
diff --git a/internal/service/space.go b/internal/service/space.go
index 5ed2ada..bd16b5c 100644
--- a/internal/service/space.go
+++ b/internal/service/space.go
@@ -118,3 +118,8 @@ func (s *SpaceService) UpdateSpaceTimezone(spaceID, timezone string) error {
 	}
 	return s.spaceRepo.UpdateTimezone(spaceID, timezone)
 }
+
+// DeleteSpace permanently deletes a space and all its associated data.
+func (s *SpaceService) DeleteSpace(spaceID string) error {
+	return s.spaceRepo.Delete(spaceID)
+}
diff --git a/internal/ui/pages/app_space_settings.templ b/internal/ui/pages/app_space_settings.templ
index b360098..22cfcab 100644
--- a/internal/ui/pages/app_space_settings.templ
+++ b/internal/ui/pages/app_space_settings.templ
@@ -193,6 +193,91 @@ templ SpaceSettingsPage(space *model.Space, members []*model.SpaceMemberWithProf
 					}
 				}
 			}
+			// Danger Zone (owner only)
+			if isOwner {
+				@card.Card() {
+					@card.Header() {
+						@card.Title() {
+							<div class="flex items-center gap-2 text-destructive">
+								@icon.TriangleAlert(icon.Props{Class: "size-5"})
+								Danger Zone
+							</div>
+						}
+						@card.Description() {
+							Irreversible and destructive actions.
+						}
+					}
+					@card.Content() {
+						<div class="flex items-center justify-between">
+							<div>
+								<p class="text-sm font-medium">Delete this space</p>
+								<p class="text-sm text-muted-foreground">Once deleted, all data in this space will be permanently removed.</p>
+							</div>
+							{{ deleteDialogID := "delete-space-dialog-" + space.ID }}
+							@dialog.Dialog(dialog.Props{ID: deleteDialogID, DisableClickAway: true}) {
+								@dialog.Trigger() {
+									@button.Button(button.Props{
+										Variant: button.VariantDestructive,
+										Type:    button.TypeButton,
+									}) {
+										Delete Space
+									}
+								}
+								@dialog.Content() {
+									@dialog.Header() {
+										@dialog.Title() {
+											Delete space
+										}
+										@dialog.Description() {
+											This action is permanent and cannot be undone. All data including expenses, budgets, shopping lists, and members will be permanently deleted.
+										}
+									}
+									<form
+										hx-delete={ "/app/spaces/" + space.ID }
+										hx-swap="none"
+										class="space-y-4 px-6 pb-6"
+									>
+										@csrf.Token()
+										<div class="space-y-2">
+											@label.Label(label.Props{For: "confirmation_name"}) {
+												Type <span class="font-semibold">{ space.Name }</span> to confirm
+											}
+											@input.Input(input.Props{
+												Name:        "confirmation_name",
+												Placeholder: space.Name,
+												Attributes: templ.Attributes{
+													"id":           "confirmation_name",
+													"autocomplete": "off",
+													"_":            "on input if my value equals '" + space.Name + "' remove @disabled from #delete-space-confirm else add @disabled to #delete-space-confirm",
+												},
+											})
+										</div>
+										<div class="flex justify-end gap-2">
+											@dialog.Close() {
+												@button.Button(button.Props{
+													Variant: button.VariantOutline,
+													Type:    button.TypeButton,
+												}) {
+													Cancel
+												}
+											}
+											@button.Button(button.Props{
+												Variant: button.VariantDestructive,
+												Attributes: templ.Attributes{
+													"id":       "delete-space-confirm",
+													"disabled": true,
+												},
+											}) {
+												Delete Space
+											}
+										</div>
+									</form>
+								}
+							}
+						</div>
+					}
+				}
+			}
 		</div>
 		@dialog.Script()
 	}