diff --git a/frontend/src/AddSeries/AddNewSeries/AddNewSeries.css b/frontend/src/AddSeries/AddNewSeries/AddNewSeries.css
index 7c558d6d0..fa28540cd 100644
--- a/frontend/src/AddSeries/AddNewSeries/AddNewSeries.css
+++ b/frontend/src/AddSeries/AddNewSeries/AddNewSeries.css
@@ -35,14 +35,20 @@
 .message {
   margin-top: 30px;
   text-align: center;
+  font-weight: 300;
+  font-size: $largeFontSize;
 }
 
 .helpText {
   margin-bottom: 10px;
-  font-weight: 300;
   font-size: 24px;
 }
 
+.noSeriesText {
+  margin-top: 80px;
+  margin-bottom: 20px;
+}
+
 .noResults {
   margin-bottom: 10px;
   font-weight: 300;
diff --git a/frontend/src/AddSeries/AddNewSeries/AddNewSeries.js b/frontend/src/AddSeries/AddNewSeries/AddNewSeries.js
index 6936599a8..d185bca30 100644
--- a/frontend/src/AddSeries/AddNewSeries/AddNewSeries.js
+++ b/frontend/src/AddSeries/AddNewSeries/AddNewSeries.js
@@ -1,6 +1,6 @@
 import PropTypes from 'prop-types';
 import React, { Component } from 'react';
-import { icons } from 'Helpers/Props';
+import { icons, kinds } from 'Helpers/Props';
 import Button from 'Components/Link/Button';
 import Link from 'Components/Link/Link';
 import Icon from 'Components/Icon';
@@ -78,7 +78,8 @@ class AddNewSeries extends Component {
   render() {
     const {
       error,
-      items
+      items,
+      hasExistingSeries
     } = this.props;
 
     const term = this.state.term;
@@ -155,13 +156,34 @@ class AddNewSeries extends Component {
           }
 
           {
-            !term &&
+            term ?
+              null :
               <div className={styles.message}>
-                <div className={styles.helpText}>It's easy to add a new series, just start typing the name the series you want to add.</div>
+                <div className={styles.helpText}>
+                  It's easy to add a new series, just start typing the name the series you want to add.
+                </div>
                 <div>You can also search using TVDB ID of a show. eg. tvdb:71663</div>
               </div>
           }
 
+          {
+            !term && !hasExistingSeries ?
+              <div className={styles.message}>
+                <div className={styles.noSeriesText}>
+                  You haven't added any series yet, do you want to import some or all of your series first?
+                </div>
+                <div>
+                  <Button
+                    to="/add/import"
+                    kind={kinds.PRIMARY}
+                  >
+                    Import Existing Series
+                  </Button>
+                </div>
+              </div> :
+              null
+          }
+
           <div />
         </PageContentBodyConnector>
       </PageContent>
@@ -176,6 +198,7 @@ AddNewSeries.propTypes = {
   isAdding: PropTypes.bool.isRequired,
   addError: PropTypes.object,
   items: PropTypes.arrayOf(PropTypes.object).isRequired,
+  hasExistingSeries: PropTypes.bool.isRequired,
   onSeriesLookupChange: PropTypes.func.isRequired,
   onClearSeriesLookup: PropTypes.func.isRequired
 };
diff --git a/frontend/src/AddSeries/AddNewSeries/AddNewSeriesConnector.js b/frontend/src/AddSeries/AddNewSeries/AddNewSeriesConnector.js
index 332e9322a..03283c256 100644
--- a/frontend/src/AddSeries/AddNewSeries/AddNewSeriesConnector.js
+++ b/frontend/src/AddSeries/AddNewSeries/AddNewSeriesConnector.js
@@ -10,13 +10,15 @@ import AddNewSeries from './AddNewSeries';
 function createMapStateToProps() {
   return createSelector(
     (state) => state.addSeries,
+    (state) => state.series.items.length,
     (state) => state.router.location,
-    (addSeries, location) => {
+    (addSeries, existingSeriesCount, location) => {
       const { params } = parseUrl(location.search);
 
       return {
+        ...addSeries,
         term: params.term,
-        ...addSeries
+        hasExistingSeries: existingSeriesCount > 0
       };
     }
   );
diff --git a/frontend/src/AddSeries/AddNewSeries/AddNewSeriesModalContent.js b/frontend/src/AddSeries/AddNewSeries/AddNewSeriesModalContent.js
index 800705a57..3d2b9f76a 100644
--- a/frontend/src/AddSeries/AddNewSeries/AddNewSeriesModalContent.js
+++ b/frontend/src/AddSeries/AddNewSeries/AddNewSeriesModalContent.js
@@ -66,9 +66,11 @@ class AddNewSeriesModalContent extends Component {
       languageProfileId,
       seriesType,
       seasonFolder,
+      folder,
       tags,
       showLanguageProfile,
       isSmallScreen,
+      isWindows,
       onModalClose,
       onInputChange,
       ...otherProps
@@ -115,6 +117,15 @@ class AddNewSeriesModalContent extends Component {
                   <FormInputGroup
                     type={inputTypes.ROOT_FOLDER_SELECT}
                     name="rootFolderPath"
+                    valueOptions={{
+                      seriesFolder: folder,
+                      isWindows
+                    }}
+                    selectedValueOptions={{
+                      seriesFolder: folder,
+                      isWindows
+                    }}
+                    helpText={`'${folder}' subfolder will be created automatically`}
                     onChange={onInputChange}
                     {...rootFolderPath}
                   />
@@ -260,9 +271,11 @@ AddNewSeriesModalContent.propTypes = {
   languageProfileId: PropTypes.object,
   seriesType: PropTypes.object.isRequired,
   seasonFolder: PropTypes.object.isRequired,
+  folder: PropTypes.string.isRequired,
   tags: PropTypes.object.isRequired,
   showLanguageProfile: PropTypes.bool.isRequired,
   isSmallScreen: PropTypes.bool.isRequired,
+  isWindows: PropTypes.bool.isRequired,
   onModalClose: PropTypes.func.isRequired,
   onInputChange: PropTypes.func.isRequired,
   onAddSeriesPress: PropTypes.func.isRequired
diff --git a/frontend/src/AddSeries/AddNewSeries/AddNewSeriesModalContentConnector.js b/frontend/src/AddSeries/AddNewSeries/AddNewSeriesModalContentConnector.js
index dc351933e..df7c3d5bd 100644
--- a/frontend/src/AddSeries/AddNewSeries/AddNewSeriesModalContentConnector.js
+++ b/frontend/src/AddSeries/AddNewSeries/AddNewSeriesModalContentConnector.js
@@ -4,6 +4,7 @@ import { connect } from 'react-redux';
 import { createSelector } from 'reselect';
 import { setAddSeriesDefault, addSeries } from 'Store/Actions/addSeriesActions';
 import createDimensionsSelector from 'Store/Selectors/createDimensionsSelector';
+import createSystemStatusSelector from 'Store/Selectors/createSystemStatusSelector';
 import selectSettings from 'Store/Selectors/selectSettings';
 import AddNewSeriesModalContent from './AddNewSeriesModalContent';
 
@@ -12,7 +13,8 @@ function createMapStateToProps() {
     (state) => state.addSeries,
     (state) => state.settings.languageProfiles,
     createDimensionsSelector(),
-    (addSeriesState, languageProfiles, dimensions) => {
+    createSystemStatusSelector(),
+    (addSeriesState, languageProfiles, dimensions, systemStatus) => {
       const {
         isAdding,
         addError,
@@ -32,6 +34,7 @@ function createMapStateToProps() {
         isSmallScreen: dimensions.isSmallScreen,
         validationErrors,
         validationWarnings,
+        isWindows: systemStatus.isWindows,
         ...settings
       };
     }
diff --git a/frontend/src/AddSeries/AddNewSeries/AddNewSeriesSearchResult.js b/frontend/src/AddSeries/AddNewSeries/AddNewSeriesSearchResult.js
index f684ca35b..dd502e104 100644
--- a/frontend/src/AddSeries/AddNewSeries/AddNewSeriesSearchResult.js
+++ b/frontend/src/AddSeries/AddNewSeries/AddNewSeriesSearchResult.js
@@ -53,6 +53,7 @@ class AddNewSeriesSearchResult extends Component {
       overview,
       statistics,
       ratings,
+      folder,
       images,
       isExistingSeries,
       isSmallScreen
@@ -160,6 +161,7 @@ class AddNewSeriesSearchResult extends Component {
           title={title}
           year={year}
           overview={overview}
+          folder={folder}
           images={images}
           onModalClose={this.onAddSeriesModalClose}
         />
@@ -178,6 +180,7 @@ AddNewSeriesSearchResult.propTypes = {
   overview: PropTypes.string,
   statistics: PropTypes.object.isRequired,
   ratings: PropTypes.object.isRequired,
+  folder: PropTypes.string.isRequired,
   images: PropTypes.arrayOf(PropTypes.object).isRequired,
   isExistingSeries: PropTypes.bool.isRequired,
   isSmallScreen: PropTypes.bool.isRequired
diff --git a/frontend/src/Components/Form/EnhancedSelectInput.js b/frontend/src/Components/Form/EnhancedSelectInput.js
index 80ee78e81..6c50c1c82 100644
--- a/frontend/src/Components/Form/EnhancedSelectInput.js
+++ b/frontend/src/Components/Form/EnhancedSelectInput.js
@@ -262,6 +262,7 @@ class EnhancedSelectInput extends Component {
       isDisabled,
       hasError,
       hasWarning,
+      valueOptions,
       selectedValueOptions,
       selectedValueComponent: SelectedValueComponent,
       optionComponent: OptionComponent
@@ -363,6 +364,7 @@ class EnhancedSelectInput extends Component {
                                   key={v.key}
                                   id={v.key}
                                   isSelected={index === selectedIndex}
+                                  {...valueOptions}
                                   {...v}
                                   isMobile={false}
                                   onSelect={this.onSelect}
@@ -404,6 +406,7 @@ class EnhancedSelectInput extends Component {
                           key={v.key}
                           id={v.key}
                           isSelected={index === selectedIndex}
+                          {...valueOptions}
                           {...v}
                           isMobile={true}
                           onSelect={this.onSelect}
@@ -431,6 +434,7 @@ EnhancedSelectInput.propTypes = {
   isDisabled: PropTypes.bool,
   hasError: PropTypes.bool,
   hasWarning: PropTypes.bool,
+  valueOptions: PropTypes.object.isRequired,
   selectedValueOptions: PropTypes.object.isRequired,
   selectedValueComponent: PropTypes.oneOfType([PropTypes.string, PropTypes.func]).isRequired,
   optionComponent: PropTypes.elementType,
@@ -441,6 +445,7 @@ EnhancedSelectInput.defaultProps = {
   className: styles.enhancedSelect,
   disabledClassName: styles.isDisabled,
   isDisabled: false,
+  valueOptions: {},
   selectedValueOptions: {},
   selectedValueComponent: HintedSelectInputSelectedValue,
   optionComponent: HintedSelectInputOption
diff --git a/frontend/src/Components/Form/RootFolderSelectInputConnector.js b/frontend/src/Components/Form/RootFolderSelectInputConnector.js
index b3dfcbd20..b76501dc1 100644
--- a/frontend/src/Components/Form/RootFolderSelectInputConnector.js
+++ b/frontend/src/Components/Form/RootFolderSelectInputConnector.js
@@ -1,4 +1,3 @@
-import _ from 'lodash';
 import PropTypes from 'prop-types';
 import React, { Component } from 'react';
 import { connect } from 'react-redux';
@@ -13,7 +12,7 @@ function createMapStateToProps() {
     (state) => state.rootFolders,
     (state, { includeNoChange }) => includeNoChange,
     (rootFolders, includeNoChange) => {
-      const values = _.map(rootFolders.items, (rootFolder) => {
+      const values = rootFolders.items.map((rootFolder) => {
         return {
           key: rootFolder.path,
           value: rootFolder.path,
@@ -85,7 +84,7 @@ class RootFolderSelectInputConnector extends Component {
       onChange
     } = this.props;
 
-    if (!value || !_.some(values, (v) => v.key === value) || value === ADD_NEW_KEY) {
+    if (!value || !values.some((v) => v.key === value) || value === ADD_NEW_KEY) {
       const defaultValue = values[0];
 
       if (defaultValue.key === ADD_NEW_KEY) {
diff --git a/frontend/src/Components/Form/RootFolderSelectInputOption.css b/frontend/src/Components/Form/RootFolderSelectInputOption.css
index d8b44fcad..0bad54366 100644
--- a/frontend/src/Components/Form/RootFolderSelectInputOption.css
+++ b/frontend/src/Components/Form/RootFolderSelectInputOption.css
@@ -13,6 +13,15 @@
   }
 }
 
+.value {
+  display: flex;
+}
+
+.seriesFolder {
+  flex: 0 0 auto;
+  color: $disabledColor;
+}
+
 .freeSpace {
   margin-left: 15px;
   color: $darkGray;
diff --git a/frontend/src/Components/Form/RootFolderSelectInputOption.js b/frontend/src/Components/Form/RootFolderSelectInputOption.js
index a4db9cd82..c3065c6f1 100644
--- a/frontend/src/Components/Form/RootFolderSelectInputOption.js
+++ b/frontend/src/Components/Form/RootFolderSelectInputOption.js
@@ -7,14 +7,20 @@ import styles from './RootFolderSelectInputOption.css';
 
 function RootFolderSelectInputOption(props) {
   const {
+    id,
     value,
     freeSpace,
+    seriesFolder,
     isMobile,
+    isWindows,
     ...otherProps
   } = props;
 
+  const slashCharacter = isWindows ? '\\' : '/';
+
   return (
     <EnhancedSelectInputOption
+      id={id}
       isMobile={isMobile}
       {...otherProps}
     >
@@ -23,7 +29,18 @@ function RootFolderSelectInputOption(props) {
         isMobile && styles.isMobile
       )}
       >
-        <div>{value}</div>
+        <div className={styles.value}>
+          {value}
+
+          {
+            seriesFolder && id !== 'addNew' ?
+              <div className={styles.seriesFolder}>
+                {slashCharacter}
+                {seriesFolder}
+              </div> :
+              null
+          }
+        </div>
 
         {
           freeSpace != null &&
@@ -37,9 +54,12 @@ function RootFolderSelectInputOption(props) {
 }
 
 RootFolderSelectInputOption.propTypes = {
+  id: PropTypes.string.isRequired,
   value: PropTypes.string.isRequired,
   freeSpace: PropTypes.number,
-  isMobile: PropTypes.bool.isRequired
+  seriesFolder: PropTypes.string,
+  isMobile: PropTypes.bool.isRequired,
+  isWindows: PropTypes.bool
 };
 
 export default RootFolderSelectInputOption;
diff --git a/frontend/src/Components/Form/RootFolderSelectInputSelectedValue.css b/frontend/src/Components/Form/RootFolderSelectInputSelectedValue.css
index 6b0cf9e4f..1353adfa3 100644
--- a/frontend/src/Components/Form/RootFolderSelectInputSelectedValue.css
+++ b/frontend/src/Components/Form/RootFolderSelectInputSelectedValue.css
@@ -7,10 +7,20 @@
   overflow: hidden;
 }
 
+.pathContainer {
+  @add-mixin truncate;
+  display: flex;
+  flex: 1 0 0;
+}
+
 .path {
   @add-mixin truncate;
+  flex: 0 1 auto;
+}
 
-  flex: 1 0 0;
+.seriesFolder {
+  flex: 0 1 auto;
+  color: $disabledColor;
 }
 
 .freeSpace {
diff --git a/frontend/src/Components/Form/RootFolderSelectInputSelectedValue.js b/frontend/src/Components/Form/RootFolderSelectInputSelectedValue.js
index ffd769254..69b1453f3 100644
--- a/frontend/src/Components/Form/RootFolderSelectInputSelectedValue.js
+++ b/frontend/src/Components/Form/RootFolderSelectInputSelectedValue.js
@@ -8,17 +8,32 @@ function RootFolderSelectInputSelectedValue(props) {
   const {
     value,
     freeSpace,
+    seriesFolder,
     includeFreeSpace,
+    isWindows,
     ...otherProps
   } = props;
 
+  const slashCharacter = isWindows ? '\\' : '/';
+
   return (
     <EnhancedSelectInputSelectedValue
       className={styles.selectedValue}
       {...otherProps}
     >
-      <div className={styles.path}>
-        {value}
+      <div className={styles.pathContainer}>
+        <div className={styles.path}>
+          {value}
+        </div>
+
+        {
+          seriesFolder ?
+            <div className={styles.seriesFolder}>
+              {slashCharacter}
+              {seriesFolder}
+            </div> :
+            null
+        }
       </div>
 
       {
@@ -34,6 +49,8 @@ function RootFolderSelectInputSelectedValue(props) {
 RootFolderSelectInputSelectedValue.propTypes = {
   value: PropTypes.string,
   freeSpace: PropTypes.number,
+  seriesFolder: PropTypes.string,
+  isWindows: PropTypes.bool,
   includeFreeSpace: PropTypes.bool.isRequired
 };
 
diff --git a/frontend/src/Series/NoSeries.js b/frontend/src/Series/NoSeries.js
index cfcbb53ab..0e9a1d8ce 100644
--- a/frontend/src/Series/NoSeries.js
+++ b/frontend/src/Series/NoSeries.js
@@ -20,7 +20,7 @@ function NoSeries(props) {
   return (
     <div>
       <div className={styles.message}>
-        No series found, to get started you'll want to add a new series or import some existing ones.
+        No series found, to get started you'll want to import your existing series or add a new series.
       </div>
 
       <div className={styles.buttonContainer}>
diff --git a/src/NzbDrone.Common/Extensions/PathExtensions.cs b/src/NzbDrone.Common/Extensions/PathExtensions.cs
index b79f5e86b..4e3b4537c 100644
--- a/src/NzbDrone.Common/Extensions/PathExtensions.cs
+++ b/src/NzbDrone.Common/Extensions/PathExtensions.cs
@@ -81,6 +81,15 @@ namespace NzbDrone.Common.Extensions
             return Directory.GetParent(cleanPath)?.FullName;
         }
 
+        public static string GetCleanPath(this string path)
+        {
+            var cleanPath = OsInfo.IsWindows
+                ? PARENT_PATH_END_SLASH_REGEX.Replace(path, "")
+                : path.TrimEnd(Path.DirectorySeparatorChar);
+
+            return cleanPath;
+        }
+
         public static bool IsParentPath(this string parentPath, string childPath)
         {
             if (parentPath != "/" && !parentPath.EndsWith(":\\"))
diff --git a/src/Sonarr.Api.V3/RootFolders/RootFolderResource.cs b/src/Sonarr.Api.V3/RootFolders/RootFolderResource.cs
index dba574686..e85cdc99d 100644
--- a/src/Sonarr.Api.V3/RootFolders/RootFolderResource.cs
+++ b/src/Sonarr.Api.V3/RootFolders/RootFolderResource.cs
@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using System.Linq;
+using NzbDrone.Common.Extensions;
 using NzbDrone.Core.RootFolders;
 using Sonarr.Http.REST;
 
@@ -23,7 +24,7 @@ namespace Sonarr.Api.V3.RootFolders
             {
                 Id = model.Id,
 
-                Path = model.Path,
+                Path = model.Path.GetCleanPath(),
                 FreeSpace = model.FreeSpace,
                 UnmappedFolders = model.UnmappedFolders
             };
@@ -37,7 +38,7 @@ namespace Sonarr.Api.V3.RootFolders
             {
                 Id = resource.Id,
 
-                Path = resource.Path,
+                Path = resource.Path
                 //FreeSpace
                 //UnmappedFolders
             };
diff --git a/src/Sonarr.Api.V3/Series/SeriesFolderAsRootFolderValidator.cs b/src/Sonarr.Api.V3/Series/SeriesFolderAsRootFolderValidator.cs
new file mode 100644
index 000000000..82413e356
--- /dev/null
+++ b/src/Sonarr.Api.V3/Series/SeriesFolderAsRootFolderValidator.cs
@@ -0,0 +1,37 @@
+using System;
+using System.IO;
+using FluentValidation.Validators;
+using NzbDrone.Common.Extensions;
+using NzbDrone.Core.Organizer;
+
+namespace Sonarr.Api.V3.Series
+{
+    public class SeriesFolderAsRootFolderValidator : PropertyValidator
+    {
+        private readonly IBuildFileNames _fileNameBuilder;
+
+        public SeriesFolderAsRootFolderValidator(IBuildFileNames fileNameBuilder)
+            : base("Root folder path contains series folder")
+        {
+            _fileNameBuilder = fileNameBuilder;
+        }
+
+        protected override bool IsValid(PropertyValidatorContext context)
+        {
+            if (context.PropertyValue == null) return true;
+
+            var seriesResource = context.Instance as SeriesResource;
+
+            if (seriesResource == null) return true;
+
+            var rootFolderPath = context.PropertyValue.ToString();
+            var rootFolder = new DirectoryInfo(rootFolderPath).Name;
+            var series = seriesResource.ToModel();
+            var seriesFolder = _fileNameBuilder.GetSeriesFolder(series);
+
+            if (seriesFolder == rootFolder) return false;
+
+            return seriesFolder.LevenshteinDistance(rootFolder) <= Math.Max(1, seriesFolder.Length * 0.2);
+        }
+    }
+}
diff --git a/src/Sonarr.Api.V3/Series/SeriesLookupModule.cs b/src/Sonarr.Api.V3/Series/SeriesLookupModule.cs
index df62b052b..e3e6612d9 100644
--- a/src/Sonarr.Api.V3/Series/SeriesLookupModule.cs
+++ b/src/Sonarr.Api.V3/Series/SeriesLookupModule.cs
@@ -3,6 +3,7 @@ using System.Linq;
 using Nancy;
 using NzbDrone.Core.MediaCover;
 using NzbDrone.Core.MetadataSource;
+using NzbDrone.Core.Organizer;
 using NzbDrone.Core.SeriesStats;
 using Sonarr.Http;
 using Sonarr.Http.Extensions;
@@ -12,33 +13,35 @@ namespace Sonarr.Api.V3.Series
     public class SeriesLookupModule : SonarrRestModule<SeriesResource>
     {
         private readonly ISearchForNewSeries _searchProxy;
+        private readonly IBuildFileNames _fileNameBuilder;
 
-        public SeriesLookupModule(ISearchForNewSeries searchProxy)
+        public SeriesLookupModule(ISearchForNewSeries searchProxy, IBuildFileNames fileNameBuilder)
             : base("/series/lookup")
         {
             _searchProxy = searchProxy;
+            _fileNameBuilder = fileNameBuilder;
             Get["/"] = x => Search();
         }
 
-
         private Response Search()
         {
             var tvDbResults = _searchProxy.SearchForNewSeries((string)Request.Query.term);
             return MapToResource(tvDbResults).AsResponse();
         }
 
-
-        private static IEnumerable<SeriesResource> MapToResource(IEnumerable<NzbDrone.Core.Tv.Series> series)
+        private IEnumerable<SeriesResource> MapToResource(IEnumerable<NzbDrone.Core.Tv.Series> series)
         {
             foreach (var currentSeries in series)
             {
                 var resource = currentSeries.ToResource();
                 var poster = currentSeries.Images.FirstOrDefault(c => c.CoverType == MediaCoverTypes.Poster);
+
                 if (poster != null)
                 {
                     resource.RemotePoster = poster.Url;
                 }
 
+                resource.Folder = _fileNameBuilder.GetSeriesFolder(currentSeries);
                 resource.Statistics = new SeriesStatistics().ToResource(resource.Seasons);
 
                 yield return resource;
diff --git a/src/Sonarr.Api.V3/Series/SeriesModule.cs b/src/Sonarr.Api.V3/Series/SeriesModule.cs
index 016a6dd53..5956fc5ab 100644
--- a/src/Sonarr.Api.V3/Series/SeriesModule.cs
+++ b/src/Sonarr.Api.V3/Series/SeriesModule.cs
@@ -55,7 +55,8 @@ namespace Sonarr.Api.V3.Series
                             SeriesAncestorValidator seriesAncestorValidator,
                             SystemFolderValidator systemFolderValidator,
                             ProfileExistsValidator profileExistsValidator,
-                            LanguageProfileExistsValidator languageProfileExistsValidator
+                            LanguageProfileExistsValidator languageProfileExistsValidator,
+                            SeriesFolderAsRootFolderValidator seriesFolderAsRootFolderValidator
             )
             : base(signalRBroadcaster)
         {
@@ -90,7 +91,10 @@ namespace Sonarr.Api.V3.Series
             SharedValidator.RuleFor(s => s.LanguageProfileId).SetValidator(languageProfileExistsValidator);
 
             PostValidator.RuleFor(s => s.Path).IsValidPath().When(s => s.RootFolderPath.IsNullOrWhiteSpace());
-            PostValidator.RuleFor(s => s.RootFolderPath).IsValidPath().When(s => s.Path.IsNullOrWhiteSpace());
+            PostValidator.RuleFor(s => s.RootFolderPath)
+                         .IsValidPath()
+                         .SetValidator(seriesFolderAsRootFolderValidator)
+                         .When(s => s.Path.IsNullOrWhiteSpace());
             PostValidator.RuleFor(s => s.Title).NotEmpty();
             PostValidator.RuleFor(s => s.TvdbId).GreaterThan(0).SetValidator(seriesExistsValidator);
 
diff --git a/src/Sonarr.Api.V3/Series/SeriesResource.cs b/src/Sonarr.Api.V3/Series/SeriesResource.cs
index 40a8ff6b3..8a8701d05 100644
--- a/src/Sonarr.Api.V3/Series/SeriesResource.cs
+++ b/src/Sonarr.Api.V3/Series/SeriesResource.cs
@@ -56,6 +56,7 @@ namespace Sonarr.Api.V3.Series
         public string ImdbId { get; set; }
         public string TitleSlug { get; set; }
         public string RootFolderPath { get; set; }
+        public string Folder { get; set; }
         public string Certification { get; set; }
         public List<string> Genres { get; set; }
         public HashSet<int> Tags { get; set; }
diff --git a/src/Sonarr.Api.V3/Sonarr.Api.V3.csproj b/src/Sonarr.Api.V3/Sonarr.Api.V3.csproj
index 5f5f99b9a..deec8c714 100644
--- a/src/Sonarr.Api.V3/Sonarr.Api.V3.csproj
+++ b/src/Sonarr.Api.V3/Sonarr.Api.V3.csproj
@@ -160,6 +160,7 @@
     <Compile Include="Notifications\NotificationModule.cs" />
     <Compile Include="Notifications\NotificationResource.cs" />
     <Compile Include="SeasonPass\SeasonPassSeriesResource.cs" />
+    <Compile Include="Series\SeriesFolderAsRootFolderValidator.cs" />
     <Compile Include="Series\SeriesStatisticsResource.cs" />
     <Compile Include="Series\SeriesEditorDeleteResource.cs" />
     <Compile Include="Series\SeriesEditorResource.cs" />