diff --git a/tradein-mvp/frontend/src/app/page.tsx b/tradein-mvp/frontend/src/app/page.tsx
index 70566f91..aacfbdd1 100644
--- a/tradein-mvp/frontend/src/app/page.tsx
+++ b/tradein-mvp/frontend/src/app/page.tsx
@@ -11,8 +11,8 @@ import { useRouter } from "next/navigation";
 import "@/components/trade-in/trade-in.css";
 import type { AggregatedEstimate, TradeInEstimateInput } from "@/types/trade-in";
 import { useEstimateMutation, useEstimate } from "@/lib/trade-in-api";
-import { API_BASE_URL } from "@/lib/api";
 import { EstimateForm } from "@/components/trade-in/EstimateForm";
+import { Topbar } from "@/components/trade-in/Topbar";
 import { SourcesProgress } from "@/components/trade-in/SourcesProgress";
 import { HeroSummary } from "@/components/trade-in/HeroSummary";
 import { IMVBenchmark } from "@/components/trade-in/IMVBenchmark";
@@ -79,22 +79,7 @@ export default function TradeInPage() {
 
   return (
     <>
-      {/* Topbar — белый-лейбл бренд */}
-      <header className="topbar">
-        <div className="topbar-inner">
-          <div className="brand">
-            <span className="brand-mark">TI</span>
-            <span className="brand-name">PRINZIP</span>
-            <span className="brand-sep" />
-            <span className="brand-product">Trade-In</span>
-          </div>
-          <nav className="top-nav">
-            <a href={`${API_BASE_URL}/`} className="is-active">Оценка</a>
-            <a href={`${API_BASE_URL}/history`}>История</a>
-            <a href={`${API_BASE_URL}/cache`}>Кэш</a>
-          </nav>
-        </div>
-      </header>
+      <Topbar active="estimate" />
 
       <main className="page">
         <div className="crumbs">
diff --git a/tradein-mvp/frontend/src/app/scrapers/avito/page.tsx b/tradein-mvp/frontend/src/app/scrapers/avito/page.tsx
new file mode 100644
index 00000000..23263f2f
--- /dev/null
+++ b/tradein-mvp/frontend/src/app/scrapers/avito/page.tsx
@@ -0,0 +1,417 @@
+"use client";
+
+import { useState } from "react";
+import { useMutation } from "@tanstack/react-query";
+
+import "@/components/trade-in/trade-in.css";
+import { Topbar } from "@/components/trade-in/Topbar";
+import { apiFetch } from "@/lib/api";
+
+// ── Types ──────────────────────────────────────────────────────────────────
+
+interface ScrapeAroundInput {
+  lat: number;
+  lon: number;
+  radius_m: number;
+}
+
+interface ScrapeAroundResp {
+  total_fetched: number;
+  total_inserted: number;
+  total_updated: number;
+  by_source: Array<{
+    source: string;
+    fetched: number;
+    inserted: number;
+    updated: number;
+  }>;
+}
+
+interface HouseTriggerResp {
+  ok: boolean;
+  house_url: string;
+  counters: Record<string, number | string>;
+}
+
+interface DetailTriggerResp {
+  ok: boolean;
+  item_id: string;
+  updated: boolean;
+}
+
+interface ImvInput {
+  address: string;
+  rooms: number;
+  area_m2: number;
+  floor: number;
+  floor_at_home: number;
+  house_type: string;
+  renovation_type: string;
+  has_balcony: boolean;
+  has_loggia: boolean;
+}
+
+interface ImvResp {
+  ok: boolean;
+  cache_key: string;
+  recommended_price: number;
+  range: [number, number];
+  market_count: number | null;
+  evaluation_id: number;
+  history_saved: number;
+}
+
+// ── Mutations ──────────────────────────────────────────────────────────────
+
+function useScrapeAround() {
+  return useMutation<ScrapeAroundResp, Error, ScrapeAroundInput>({
+    mutationFn: (input) =>
+      apiFetch<ScrapeAroundResp>("/api/v1/admin/scrape", {
+        method: "POST",
+        body: JSON.stringify({ ...input, sources: ["avito"] }),
+      }),
+  });
+}
+
+function useScrapeHouse() {
+  return useMutation<HouseTriggerResp, Error, { house_url: string }>({
+    mutationFn: ({ house_url }) =>
+      apiFetch<HouseTriggerResp>(
+        `/api/v1/admin/scrape/avito-house?house_url=${encodeURIComponent(house_url)}`,
+        { method: "POST" },
+      ),
+  });
+}
+
+function useScrapeDetail() {
+  return useMutation<DetailTriggerResp, Error, { item_url: string }>({
+    mutationFn: ({ item_url }) =>
+      apiFetch<DetailTriggerResp>(
+        `/api/v1/admin/scrape/avito-detail?item_url=${encodeURIComponent(item_url)}`,
+        { method: "POST" },
+      ),
+  });
+}
+
+function useScrapeImv() {
+  return useMutation<ImvResp, Error, ImvInput>({
+    mutationFn: (input) => {
+      const qs = new URLSearchParams({
+        address: input.address,
+        rooms: String(input.rooms),
+        area_m2: String(input.area_m2),
+        floor: String(input.floor),
+        floor_at_home: String(input.floor_at_home),
+        house_type: input.house_type,
+        renovation_type: input.renovation_type,
+        has_balcony: String(input.has_balcony),
+        has_loggia: String(input.has_loggia),
+      });
+      return apiFetch<ImvResp>(
+        `/api/v1/admin/scrape/avito-imv?${qs.toString()}`,
+        { method: "POST" },
+      );
+    },
+  });
+}
+
+// ── Result panel ───────────────────────────────────────────────────────────
+
+interface ResultPanelProps<TData> {
+  mut: {
+    data?: TData;
+    error: Error | null;
+    isPending: boolean;
+    isSuccess: boolean;
+  };
+}
+
+function ResultPanel<TData>({ mut }: ResultPanelProps<TData>) {
+  if (mut.error) {
+    return (
+      <div className="scraper-result scraper-result--error">
+        <strong>Ошибка:</strong> {mut.error.message}
+      </div>
+    );
+  }
+  if (mut.isSuccess && mut.data) {
+    return (
+      <div className="scraper-result">
+        <pre>{JSON.stringify(mut.data, null, 2)}</pre>
+      </div>
+    );
+  }
+  return null;
+}
+
+// ── Page ───────────────────────────────────────────────────────────────────
+
+export default function AvitoScraperPage() {
+  // 1. Around-point
+  const [lat, setLat] = useState("56.8400");
+  const [lon, setLon] = useState("60.6050");
+  const [radius, setRadius] = useState("1500");
+  const aroundMut = useScrapeAround();
+
+  // 2. Houses Catalog
+  const [houseUrl, setHouseUrl] = useState(
+    "/catalog/houses/ekaterinburg/ul_akademika_postovskogo_17a/3171365",
+  );
+  const houseMut = useScrapeHouse();
+
+  // 3. Detail
+  const [itemUrl, setItemUrl] = useState(
+    "/ekaterinburg/kvartiry/3-k._kvartira_75_m_2026_et._7986882804",
+  );
+  const detailMut = useScrapeDetail();
+
+  // 4. IMV
+  const [imvAddress, setImvAddress] = useState(
+    "Свердловская обл., Екатеринбург, ул. Чайковского, 66А",
+  );
+  const [imvRooms, setImvRooms] = useState("2");
+  const [imvArea, setImvArea] = useState("42");
+  const [imvFloor, setImvFloor] = useState("4");
+  const [imvTotalFloors, setImvTotalFloors] = useState("5");
+  const [imvHouseType, setImvHouseType] = useState("panel");
+  const [imvRenovation, setImvRenovation] = useState("cosmetic");
+  const [imvBalcony, setImvBalcony] = useState(true);
+  const [imvLoggia, setImvLoggia] = useState(false);
+  const imvMut = useScrapeImv();
+
+  return (
+    <>
+      <Topbar active="avito" />
+      <main className="page scraper-page">
+        <h1 className="scraper-h1">Avito скрапер — admin триггер</h1>
+        <p className="scraper-subtitle">
+          Ручной запуск sub-pipeline&apos;ов AvitoScraper v2. Для бесплатной
+          разработки и теста после изменений.
+        </p>
+
+        {/* 1. Search around point */}
+        <section className="scraper-section">
+          <h2>1. Search around (общий /admin/scrape)</h2>
+          <p className="scraper-hint">
+            Запускает классический cron-pipeline для одного якоря: search →
+            save_listings. Использовать как baseline.
+          </p>
+          <form
+            className="scraper-form"
+            onSubmit={(e) => {
+              e.preventDefault();
+              aroundMut.mutate({
+                lat: parseFloat(lat),
+                lon: parseFloat(lon),
+                radius_m: parseInt(radius, 10),
+              });
+            }}
+          >
+            <label>
+              Lat
+              <input
+                value={lat}
+                onChange={(e) => setLat(e.target.value)}
+                required
+              />
+            </label>
+            <label>
+              Lon
+              <input
+                value={lon}
+                onChange={(e) => setLon(e.target.value)}
+                required
+              />
+            </label>
+            <label>
+              Radius (м)
+              <input
+                value={radius}
+                onChange={(e) => setRadius(e.target.value)}
+                required
+              />
+            </label>
+            <button type="submit" disabled={aroundMut.isPending}>
+              {aroundMut.isPending ? "Скрейпим…" : "Запустить"}
+            </button>
+          </form>
+          <ResultPanel mut={aroundMut} />
+        </section>
+
+        {/* 2. Houses Catalog */}
+        <section className="scraper-section">
+          <h2>2. Houses Catalog enrichment</h2>
+          <p className="scraper-hint">
+            Парсит /catalog/houses/&lt;slug&gt;/&lt;id&gt; — характеристики
+            дома, отзывы, history.
+          </p>
+          <form
+            className="scraper-form"
+            onSubmit={(e) => {
+              e.preventDefault();
+              houseMut.mutate({ house_url: houseUrl });
+            }}
+          >
+            <label className="full">
+              house_url
+              <input
+                value={houseUrl}
+                onChange={(e) => setHouseUrl(e.target.value)}
+                required
+                placeholder="/catalog/houses/<city>/<slug>/<id>"
+              />
+            </label>
+            <button type="submit" disabled={houseMut.isPending}>
+              {houseMut.isPending ? "Парсим…" : "Запустить"}
+            </button>
+          </form>
+          <ResultPanel mut={houseMut} />
+        </section>
+
+        {/* 3. Detail */}
+        <section className="scraper-section">
+          <h2>3. Detail page enrichment</h2>
+          <p className="scraper-hint">
+            Парсит /ekaterinburg/kvartiry/&lt;...&gt; — 30+ полей
+            (kitchen_area, owners_count, etc). UPDATE listings WHERE source_id
+            (listing должен уже существовать).
+          </p>
+          <form
+            className="scraper-form"
+            onSubmit={(e) => {
+              e.preventDefault();
+              detailMut.mutate({ item_url: itemUrl });
+            }}
+          >
+            <label className="full">
+              item_url
+              <input
+                value={itemUrl}
+                onChange={(e) => setItemUrl(e.target.value)}
+                required
+                placeholder="/ekaterinburg/kvartiry/.../...."
+              />
+            </label>
+            <button type="submit" disabled={detailMut.isPending}>
+              {detailMut.isPending ? "Парсим…" : "Запустить"}
+            </button>
+          </form>
+          <ResultPanel mut={detailMut} />
+        </section>
+
+        {/* 4. IMV evaluation */}
+        <section className="scraper-section">
+          <h2>4. IMV evaluation (debug, без cache)</h2>
+          <p className="scraper-hint">
+            Прямой вызов Avito IMV API (2 HTTP requests). Production вызов из
+            estimator on-demand с 24h cache; здесь — для debug.
+          </p>
+          <form
+            className="scraper-form"
+            onSubmit={(e) => {
+              e.preventDefault();
+              imvMut.mutate({
+                address: imvAddress,
+                rooms: parseInt(imvRooms, 10),
+                area_m2: parseFloat(imvArea),
+                floor: parseInt(imvFloor, 10),
+                floor_at_home: parseInt(imvTotalFloors, 10),
+                house_type: imvHouseType,
+                renovation_type: imvRenovation,
+                has_balcony: imvBalcony,
+                has_loggia: imvLoggia,
+              });
+            }}
+          >
+            <label className="full">
+              Адрес
+              <input
+                value={imvAddress}
+                onChange={(e) => setImvAddress(e.target.value)}
+                required
+              />
+            </label>
+            <label>
+              Комн.
+              <input
+                value={imvRooms}
+                onChange={(e) => setImvRooms(e.target.value)}
+                required
+              />
+            </label>
+            <label>
+              Площадь (м²)
+              <input
+                value={imvArea}
+                onChange={(e) => setImvArea(e.target.value)}
+                required
+              />
+            </label>
+            <label>
+              Этаж
+              <input
+                value={imvFloor}
+                onChange={(e) => setImvFloor(e.target.value)}
+                required
+              />
+            </label>
+            <label>
+              Этажей в доме
+              <input
+                value={imvTotalFloors}
+                onChange={(e) => setImvTotalFloors(e.target.value)}
+                required
+              />
+            </label>
+            <label>
+              Тип дома
+              <select
+                value={imvHouseType}
+                onChange={(e) => setImvHouseType(e.target.value)}
+              >
+                <option value="panel">панель</option>
+                <option value="brick">кирпич</option>
+                <option value="monolith">монолит</option>
+                <option value="monolith_brick">монолит-кирпич</option>
+                <option value="block">блочный</option>
+                <option value="wood">дерево</option>
+              </select>
+            </label>
+            <label>
+              Ремонт
+              <select
+                value={imvRenovation}
+                onChange={(e) => setImvRenovation(e.target.value)}
+              >
+                <option value="required">требуется</option>
+                <option value="cosmetic">косметический</option>
+                <option value="euro">евро</option>
+                <option value="designer">дизайнерский</option>
+              </select>
+            </label>
+            <label className="checkbox">
+              <input
+                type="checkbox"
+                checked={imvBalcony}
+                onChange={(e) => setImvBalcony(e.target.checked)}
+              />
+              Балкон
+            </label>
+            <label className="checkbox">
+              <input
+                type="checkbox"
+                checked={imvLoggia}
+                onChange={(e) => setImvLoggia(e.target.checked)}
+              />
+              Лоджия
+            </label>
+            <button type="submit" disabled={imvMut.isPending}>
+              {imvMut.isPending ? "Запрашиваем Avito…" : "Запустить IMV"}
+            </button>
+          </form>
+          <ResultPanel mut={imvMut} />
+        </section>
+      </main>
+    </>
+  );
+}
diff --git a/tradein-mvp/frontend/src/app/scrapers/cian/page.tsx b/tradein-mvp/frontend/src/app/scrapers/cian/page.tsx
new file mode 100644
index 00000000..e239e18a
--- /dev/null
+++ b/tradein-mvp/frontend/src/app/scrapers/cian/page.tsx
@@ -0,0 +1,24 @@
+"use client";
+
+import "@/components/trade-in/trade-in.css";
+import { Topbar } from "@/components/trade-in/Topbar";
+
+export default function CianScraperPage() {
+  return (
+    <>
+      <Topbar active="cian" />
+      <main className="page scraper-page">
+        <h1 className="scraper-h1">Cian скрапер</h1>
+        <p className="scraper-subtitle">В разработке.</p>
+        <div className="scraper-section">
+          <p style={{ color: "var(--muted, #5b6066)" }}>
+            Cian SERP refactor merged (PR #450), но admin UI ещё не подключён.
+            Используй cron-scrape.sh или прямой curl к{" "}
+            <code>POST /api/v1/admin/scrape</code> с{" "}
+            <code>sources: [&quot;cian&quot;]</code>.
+          </p>
+        </div>
+      </main>
+    </>
+  );
+}
diff --git a/tradein-mvp/frontend/src/app/scrapers/yandex/page.tsx b/tradein-mvp/frontend/src/app/scrapers/yandex/page.tsx
new file mode 100644
index 00000000..47506196
--- /dev/null
+++ b/tradein-mvp/frontend/src/app/scrapers/yandex/page.tsx
@@ -0,0 +1,24 @@
+"use client";
+
+import "@/components/trade-in/trade-in.css";
+import { Topbar } from "@/components/trade-in/Topbar";
+
+export default function YandexScraperPage() {
+  return (
+    <>
+      <Topbar active="yandex" />
+      <main className="page scraper-page">
+        <h1 className="scraper-h1">Yandex скрапер</h1>
+        <p className="scraper-subtitle">В разработке.</p>
+        <div className="scraper-section">
+          <p style={{ color: "var(--muted, #5b6066)" }}>
+            Yandex SERP refactor merged (PR #462), но admin UI ещё не подключён.
+            Используй cron-scrape.sh или прямой curl к{" "}
+            <code>POST /api/v1/admin/scrape</code> с{" "}
+            <code>sources: [&quot;yandex&quot;]</code>.
+          </p>
+        </div>
+      </main>
+    </>
+  );
+}
diff --git a/tradein-mvp/frontend/src/components/trade-in/Topbar.tsx b/tradein-mvp/frontend/src/components/trade-in/Topbar.tsx
new file mode 100644
index 00000000..4f8a9a9c
--- /dev/null
+++ b/tradein-mvp/frontend/src/components/trade-in/Topbar.tsx
@@ -0,0 +1,44 @@
+"use client";
+
+import { API_BASE_URL } from "@/lib/api";
+
+type ActiveTab = "estimate" | "history" | "cache" | "avito" | "cian" | "yandex";
+
+interface TopbarProps {
+  active: ActiveTab;
+}
+
+const NAV_ITEMS: Array<{ key: ActiveTab; href: string; label: string }> = [
+  { key: "estimate", href: "/", label: "Оценка" },
+  { key: "history", href: "/history", label: "История" },
+  { key: "cache", href: "/cache", label: "Кэш" },
+  { key: "avito", href: "/scrapers/avito", label: "Авито" },
+  { key: "cian", href: "/scrapers/cian", label: "Циан" },
+  { key: "yandex", href: "/scrapers/yandex", label: "Яндекс" },
+];
+
+export function Topbar({ active }: TopbarProps) {
+  return (
+    <header className="topbar">
+      <div className="topbar-inner">
+        <div className="brand">
+          <span className="brand-mark">TI</span>
+          <span className="brand-name">PRINZIP</span>
+          <span className="brand-sep" />
+          <span className="brand-product">Trade-In</span>
+        </div>
+        <nav className="top-nav">
+          {NAV_ITEMS.map((item) => (
+            <a
+              key={item.key}
+              href={`${API_BASE_URL}${item.href}`}
+              className={item.key === active ? "is-active" : undefined}
+            >
+              {item.label}
+            </a>
+          ))}
+        </nav>
+      </div>
+    </header>
+  );
+}
diff --git a/tradein-mvp/frontend/src/components/trade-in/trade-in.css b/tradein-mvp/frontend/src/components/trade-in/trade-in.css
index cb1092fb..c0c6514d 100644
--- a/tradein-mvp/frontend/src/components/trade-in/trade-in.css
+++ b/tradein-mvp/frontend/src/components/trade-in/trade-in.css
@@ -1239,3 +1239,136 @@
   color: #6b7280;
   font-style: italic;
 }
+
+/* ── Stage 4c: scrapers admin pages ── */
+
+.scraper-page {
+  max-width: 960px;
+  margin: 0 auto;
+  padding: 24px 20px 60px;
+}
+
+.scraper-h1 {
+  font-size: 22px;
+  font-weight: 600;
+  margin: 0 0 4px;
+  color: var(--fg-primary, #111111);
+}
+
+.scraper-subtitle {
+  font-size: 14px;
+  color: var(--fg-secondary, #5b6066);
+  margin: 0 0 24px;
+}
+
+.scraper-section {
+  margin-bottom: 24px;
+  padding: 20px;
+  background: var(--bg-card, #ffffff);
+  border: 1px solid var(--border-card, #e6e8ec);
+  border-radius: 12px;
+}
+
+.scraper-section h2 {
+  font-size: 16px;
+  font-weight: 600;
+  margin: 0 0 8px;
+  color: var(--fg-primary, #111111);
+}
+
+.scraper-hint {
+  font-size: 13px;
+  color: var(--fg-secondary, #5b6066);
+  margin: 0 0 16px;
+}
+
+.scraper-form {
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
+  gap: 12px;
+  align-items: end;
+}
+
+.scraper-form label {
+  display: flex;
+  flex-direction: column;
+  font-size: 12px;
+  color: var(--fg-secondary, #5b6066);
+  gap: 4px;
+}
+
+.scraper-form label.full {
+  grid-column: 1 / -1;
+}
+
+.scraper-form label.checkbox {
+  flex-direction: row;
+  align-items: center;
+  gap: 6px;
+  font-size: 13px;
+  color: var(--fg-primary, #111111);
+}
+
+.scraper-form input,
+.scraper-form select {
+  padding: 8px 10px;
+  border: 1px solid var(--border-strong, #d1d5db);
+  border-radius: 6px;
+  font-size: 14px;
+  background: #fff;
+  color: var(--fg-primary, #111111);
+}
+
+.scraper-form input:focus,
+.scraper-form select:focus {
+  outline: 2px solid var(--accent, #1d4ed8);
+  outline-offset: -1px;
+  border-color: var(--accent, #1d4ed8);
+}
+
+.scraper-form button {
+  padding: 8px 16px;
+  background: var(--accent, #1d4ed8);
+  color: #fff;
+  border: none;
+  border-radius: 6px;
+  font-size: 14px;
+  font-weight: 500;
+  cursor: pointer;
+  grid-column: 1 / -1;
+  justify-self: start;
+}
+
+.scraper-form button:hover:not(:disabled) {
+  background: var(--accent-hover, #1e40af);
+}
+
+.scraper-form button:disabled {
+  background: var(--border-strong, #d1d5db);
+  cursor: not-allowed;
+}
+
+.scraper-result {
+  margin-top: 16px;
+  padding: 12px;
+  background: var(--bg-card-alt, #fafbfc);
+  border: 1px solid var(--border-soft, #eef0f3);
+  border-radius: 8px;
+  font-size: 12px;
+  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
+  max-height: 320px;
+  overflow: auto;
+}
+
+.scraper-result--error {
+  background: var(--danger-soft, #fee2e2);
+  border-color: var(--danger, #b3261e);
+  color: var(--danger, #b3261e);
+  font-family: inherit;
+}
+
+.scraper-result pre {
+  margin: 0;
+  white-space: pre-wrap;
+  word-break: break-all;
+}