diff --git a/app/components/FilterMenu.tsx b/app/components/FilterMenu.tsx
new file mode 100644
index 0000000..1b6939a
--- /dev/null
+++ b/app/components/FilterMenu.tsx
@@ -0,0 +1,99 @@
+import { useState, FormEvent } from "react";
+import {
+  Button,
+  Flex,
+  FormControl,
+  FormLabel,
+  Heading,
+  Show,
+  Hide,
+  Select,
+  HStack,
+} from "@nycplanning/streetscape";
+import { ChevronDownIcon } from "@chakra-ui/icons";
+
+export type GeographyType = "cd" | "ccd" | null;
+
+export const FilterMenu = ({ onClose }: FilterMenuProps) => {
+  const [geographyType, setGeorgaphyType] = useState<GeographyType>("cd");
+  return (
+    <Flex
+      borderRadius={"base"}
+      padding={{ base: 3, lg: 4 }}
+      background={"white"}
+      direction={"column"}
+      width={{ base: "full", lg: "21.25rem" }}
+      maxW={{ base: "21.25rem", lg: "unset" }}
+      boxShadow={"0px 8px 4px 0px rgba(0, 0, 0, 0.08)"}
+    >
+      <Hide above="lg">
+        <ChevronDownIcon
+          onClick={() => {
+            onClose();
+          }}
+          role={"button"}
+          width={"full"}
+          height={8}
+          color={"gray.300"}
+          aria-label="Close geography filter menu"
+        />
+      </Hide>
+      <Flex gap={4} direction={"column"}>
+        <Show above="lg">
+          <Heading
+            fontSize={"lg"}
+            textAlign={"left"}
+            fontWeight={"medium"}
+            width={"full"}
+            borderBottomStyle={"dotted"}
+            borderBottomWidth={"1px"}
+            borderBottomColor={"gray.400"}
+          >
+            Filter by Geography
+          </Heading>
+        </Show>
+        <FormControl id="geographyType">
+          <FormLabel>Geography Type</FormLabel>
+          <Select
+            placeholder="-Select-"
+            variant="base"
+            onChange={(e: FormEvent<HTMLSelectElement>) => {
+              setGeorgaphyType(e.currentTarget.value as GeographyType);
+            }}
+            value={geographyType}
+          >
+            <option value={"cd"}>Community District</option>
+            <option value={"ccd"}>City Council District</option>
+          </Select>
+        </FormControl>
+        <HStack spacing={2} width={"full"}>
+          {geographyType !== "ccd" ? (
+            <FormControl id="borough">
+              <FormLabel>Borough</FormLabel>
+              <Select
+                isDisabled={true}
+                placeholder="-Select-"
+                variant="base"
+              ></Select>
+            </FormControl>
+          ) : null}
+          <FormControl id="district">
+            <FormLabel>District</FormLabel>
+            <Select
+              placeholder="-Select-"
+              variant="base"
+              isDisabled={true}
+            ></Select>
+          </FormControl>
+        </HStack>
+        <Button width="full" isDisabled={true}>
+          Go to Selected Geography
+        </Button>
+      </Flex>
+    </Flex>
+  );
+};
+
+export interface FilterMenuProps {
+  onClose: () => void;
+}
diff --git a/app/components/Overlay.tsx b/app/components/Overlay.tsx
new file mode 100644
index 0000000..0766d48
--- /dev/null
+++ b/app/components/Overlay.tsx
@@ -0,0 +1,51 @@
+import { Flex, Button, Hide, Show } from "@nycplanning/streetscape";
+import { ReactNode, useState } from "react";
+import { FilterMenu } from "./FilterMenu";
+
+export const Overlay = () => {
+  const [shouldShowFilterMenu, setShouldShowFilterMenu] = useState(false);
+
+  return (
+    <Flex
+      position="relative"
+      padding={{ base: 3, lg: 8 }}
+      height={"100vh"}
+      width={"100vw"}
+      direction={{ base: "column", lg: "row" }}
+      justify={{ base: "flex-end", lg: "flex-start" }}
+      align={{ base: "center", lg: "flex-start" }}
+      pointerEvents={"none"}
+      sx={{
+        "*": {
+          pointerEvents: "auto",
+        },
+      }}
+    >
+      <Show above="lg">
+        <FilterMenu onClose={() => setShouldShowFilterMenu(false)} />
+      </Show>
+      {shouldShowFilterMenu ? (
+        <Hide above="lg">
+          <FilterMenu onClose={() => setShouldShowFilterMenu(false)} />
+        </Hide>
+      ) : null}
+      {!shouldShowFilterMenu ? (
+        <Hide above="lg">
+          <Button
+            width={"full"}
+            maxW={"21.25rem"}
+            onClick={() => {
+              setShouldShowFilterMenu(true);
+            }}
+          >
+            Filter by Geography
+          </Button>
+        </Hide>
+      ) : null}
+    </Flex>
+  );
+};
+
+export interface OverlayProps {
+  children: ReactNode;
+}
diff --git a/app/root.tsx b/app/root.tsx
index e7ea64c..faa17df 100644
--- a/app/root.tsx
+++ b/app/root.tsx
@@ -10,6 +10,7 @@ import {
 } from "@remix-run/react";
 import { Atlas } from "./components/atlas.client";
 import { ClientOnly } from "remix-utils/client-only";
+import { Overlay } from "./components/Overlay";
 
 function Document({
   children,
@@ -22,6 +23,7 @@ function Document({
     <html lang="en">
       <head>
         <Meta />
+        <meta name="viewport" content="width=device-width, initial-scale=1" />
         <title>{title}</title>
         {/* Silence /favicon.ico error by pointing to null image. Remove link to null image after creating valid favicon. */}
         <link
@@ -45,8 +47,12 @@ export default function App() {
     <Document>
       <StreetscapeProvider>
         <Outlet />
-        <ClientOnly fallback={<h2>Loading map...</h2>}>
-          {() => <Atlas />}
+        <ClientOnly>
+          {() => (
+            <>
+              <Atlas /> <Overlay />
+            </>
+          )}
         </ClientOnly>
       </StreetscapeProvider>
     </Document>
diff --git a/package-lock.json b/package-lock.json
index 239a357..5e51f4d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,10 +1,14 @@
 {
   "name": "ae-cp-map",
+  "version": "0.0.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
+      "name": "ae-cp-map",
+      "version": "0.0.1",
       "dependencies": {
+        "@chakra-ui/icons": "^2.1.1",
         "@deck.gl/react": "^9.0.8",
         "@emotion/react": "^11.11.3",
         "@emotion/server": "^11.11.0",
diff --git a/package.json b/package.json
index 6ce38d2..ce875a0 100644
--- a/package.json
+++ b/package.json
@@ -17,6 +17,7 @@
     "kubb:generate": "kubb generate"
   },
   "dependencies": {
+    "@chakra-ui/icons": "^2.1.1",
     "@deck.gl/react": "^9.0.8",
     "@emotion/react": "^11.11.3",
     "@emotion/server": "^11.11.0",
diff --git a/tests/app.spec.ts b/tests/app.spec.ts
new file mode 100644
index 0000000..48476d9
--- /dev/null
+++ b/tests/app.spec.ts
@@ -0,0 +1,29 @@
+import { test, expect } from '@playwright/test';
+
+test('filter by geography button on mobile', async ({ page }) => {
+  await page.goto('http://localhost:5173/');
+  await page.setViewportSize({
+    width: 375,
+    height: 812,
+  });
+  await page.getByText('Filter by Geography').click();
+  await expect(page.getByText('Geography Type')).toBeVisible();
+});
+
+test('filter menu shows by default on desktop', async ({ page }) => {
+  await page.goto('http://localhost:5173/');
+  await expect(
+    page.getByRole('button', { name: 'Filter by Geography', exact: true }),
+  ).not.toBeVisible();
+  await page.getByText('Filter by Geography').click();
+  await expect(page.getByText('Geography Type')).toBeVisible();
+});
+
+test('selecting City Council District hides borough select input', async ({
+  page,
+}) => {
+  await page.goto('http://localhost:5173/');
+  await expect(page.getByLabel('Borough')).toBeVisible();
+  await page.getByLabel('Geography Type').selectOption('City Council District');
+  await expect(page.getByLabel('Borough')).not.toBeVisible();
+});
diff --git a/tests/example.spec.ts b/tests/example.spec.ts
deleted file mode 100644
index b60fe7c..0000000
--- a/tests/example.spec.ts
+++ /dev/null
@@ -1,20 +0,0 @@
-import { test, expect } from "@playwright/test";
-
-test("has title", async ({ page }) => {
-  await page.goto("https://playwright.dev/");
-
-  // Expect a title "to contain" a substring.
-  await expect(page).toHaveTitle(/Playwright/);
-});
-
-test("get started link", async ({ page }) => {
-  await page.goto("https://playwright.dev/");
-
-  // Click the get started link.
-  await page.getByRole("link", { name: "Get started" }).click();
-
-  // Expects page to have a heading with the name of Installation.
-  await expect(
-    page.getByRole("heading", { name: "Installation" }),
-  ).toBeVisible();
-});