diff --git a/Api.SeaHavenIndustries.Tests/LocationServiceTests.cs b/Api.SeaHavenIndustries.Tests/LocationServiceTests.cs
index dbf05cb..2a3f17c 100644
--- a/Api.SeaHavenIndustries.Tests/LocationServiceTests.cs
+++ b/Api.SeaHavenIndustries.Tests/LocationServiceTests.cs
@@ -15,6 +15,27 @@ namespace Api.SeaHavenIndustries.Tests;
 
 public class LocationServiceTests
 {
+    /// <summary>Fills the fields a new site must carry (client, address, one contact) unless the test set them.</summary>
+    private static LocationCreateRequestDTO WithSiteFields(ApplicationDbContext ctx, LocationCreateRequestDTO request)
+    {
+        if (request.AccountId == null)
+        {
+            if (!ctx.Accounts.Any(a => a.Id == 7))
+            {
+                ctx.Accounts.Add(new Accounts { Id = 7, Name = "Customer", IsDeleted = false });
+                ctx.SaveChanges();
+            }
+
+            request.AccountId = 7;
+        }
+
+        request.Address ??= "1 Depot Rd";
+        request.City ??= "Dallas";
+        request.State ??= "TX";
+        request.Contacts ??= new List<SiteContactRequestDTO> { new() { Name = "Main", Phone = "555-0100" } };
+        return request;
+    }
+
     private static ApplicationDbContext NewContext()
     {
         var options = new DbContextOptionsBuilder<ApplicationDbContext>()
@@ -85,7 +106,7 @@ public class LocationServiceTests
         SeedAccount(ctx, 9);
         var service = NewService(ctx);
 
-        await service.CreateLocationFromRequestAsync(new LocationCreateRequestDTO
+        await service.CreateLocationFromRequestAsync(WithSiteFields(ctx, new LocationCreateRequestDTO
         {
             Name = "Warehouse",
             Title = "Main WH",
@@ -97,7 +118,7 @@ public class LocationServiceTests
             ContactEmail = "wh@example.com",
             Status = "Active",
             AccountId = 9
-        }, OrgWideAdmin(), CancellationToken.None);
+        }), OrgWideAdmin(), CancellationToken.None);
 
         var entity = ctx.Locations.Single();
         entity.Name.Should().Be("Warehouse");
@@ -390,7 +411,7 @@ public class LocationServiceTests
         using var ctx = NewContext();
 
         var act = () => NewService(ctx).CreateLocationFromRequestAsync(
-            new LocationCreateRequestDTO { Name = "Warehouse", AccountId = 404 },
+            WithSiteFields(ctx, new LocationCreateRequestDTO { Name = "Warehouse", AccountId = 404 }),
             OrgWideAdmin(),
             CancellationToken.None);
 
@@ -406,7 +427,7 @@ public class LocationServiceTests
         ctx.SaveChanges();
 
         var act = () => NewService(ctx).CreateLocationFromRequestAsync(
-            new LocationCreateRequestDTO { Name = "Warehouse", AccountId = 9 },
+            WithSiteFields(ctx, new LocationCreateRequestDTO { Name = "Warehouse", AccountId = 9 }),
             OrgWideAdmin(),
             CancellationToken.None);
 
@@ -422,7 +443,7 @@ public class LocationServiceTests
         SeedAccount(ctx, 99);
 
         var act = () => NewService(ctx).CreateLocationFromRequestAsync(
-            new LocationCreateRequestDTO { Name = "Site", AccountId = 99 },
+            WithSiteFields(ctx, new LocationCreateRequestDTO { Name = "Site", AccountId = 99 }),
             AccountUser(4),
             CancellationToken.None);
 
@@ -457,7 +478,7 @@ public class LocationServiceTests
         SeedAccount(ctx, 9);
 
         var act = () => NewService(ctx).CreateLocationFromRequestAsync(
-            new LocationCreateRequestDTO { Name = "Site", AccountId = 9 },
+            WithSiteFields(ctx, new LocationCreateRequestDTO { Name = "Site", AccountId = 9 }),
             MissingScope(),
             CancellationToken.None);
 
@@ -487,7 +508,7 @@ public class LocationServiceTests
         using var cts = new CancellationTokenSource();
 
         await service.CreateLocationFromRequestAsync(
-            new LocationCreateRequestDTO { Name = "Site", AccountId = 9 },
+            WithSiteFields(ctx, new LocationCreateRequestDTO { Name = "Site", AccountId = 9 }),
             OrgWideAdmin(),
             cts.Token);
 
diff --git a/Api.SeaHavenIndustries.Tests/LocationSiteContactsTests.cs b/Api.SeaHavenIndustries.Tests/LocationSiteContactsTests.cs
index 5e64489..b366331 100644
--- a/Api.SeaHavenIndustries.Tests/LocationSiteContactsTests.cs
+++ b/Api.SeaHavenIndustries.Tests/LocationSiteContactsTests.cs
@@ -22,6 +22,27 @@ namespace Api.SeaHavenIndustries.Tests;
 
 public class LocationSiteContactsTests
 {
+    /// <summary>Fills the fields a new site must carry (client, address, one contact) unless the test set them.</summary>
+    private static LocationCreateRequestDTO WithSiteFields(ApplicationDbContext ctx, LocationCreateRequestDTO request)
+    {
+        if (request.AccountId == null)
+        {
+            if (!ctx.Accounts.Any(a => a.Id == 7))
+            {
+                ctx.Accounts.Add(new Accounts { Id = 7, Name = "Customer", IsDeleted = false });
+                ctx.SaveChanges();
+            }
+
+            request.AccountId = 7;
+        }
+
+        request.Address ??= "1 Depot Rd";
+        request.City ??= "Dallas";
+        request.State ??= "TX";
+        request.Contacts ??= new List<SiteContactRequestDTO> { new() { Name = "Main", Phone = "555-0100" } };
+        return request;
+    }
+
     private static ApplicationDbContext NewContext()
     {
         var options = new DbContextOptionsBuilder<ApplicationDbContext>()
@@ -53,7 +74,7 @@ public class LocationSiteContactsTests
     private static async Task<Locations> SeedLocationWithContactsAsync(ApplicationDbContext ctx)
     {
         var service = NewService(ctx);
-        await service.CreateLocationFromRequestAsync(new LocationCreateRequestDTO
+        await service.CreateLocationFromRequestAsync(WithSiteFields(ctx, new LocationCreateRequestDTO
         {
             Name = "Depot",
             Phone = "555-9000",
@@ -63,7 +84,7 @@ public class LocationSiteContactsTests
                 new() { Name = " Alice Cooper ", Phone = " 555-0100 " },
                 new() { Name = "Bob Dillon", Phone = "555-0200"}
             }
-        }, OrgWideAdmin(), CancellationToken.None);
+        }), OrgWideAdmin(), CancellationToken.None);
         return ctx.Locations.Include(l => l.Contacts).Single();
     }
 
@@ -74,7 +95,7 @@ public class LocationSiteContactsTests
         ctx.Accounts.Add(new Accounts { Id = 7, Name = "Customer", IsDeleted = false });
         await ctx.SaveChangesAsync();
 
-        await NewService(ctx).CreateLocationFromRequestAsync(new LocationCreateRequestDTO
+        await NewService(ctx).CreateLocationFromRequestAsync(WithSiteFields(ctx, new LocationCreateRequestDTO
         {
             Name = "Warehouse",
             AccountId = 7,
@@ -83,7 +104,7 @@ public class LocationSiteContactsTests
                 new() { Name = " Alice Cooper ", Phone = " 555-0100 " },
                 new() { Name = "Bob Dillon", Phone = "555-0200" }
             }
-        }, OrgWideAdmin(), CancellationToken.None);
+        }), OrgWideAdmin(), CancellationToken.None);
 
         var location = ctx.Locations.Include(l => l.Contacts).Single();
         location.PhoneNumber.Should().BeNull("Site Phone is independent of the contacts");
@@ -107,11 +128,11 @@ public class LocationSiteContactsTests
     {
         using var ctx = NewContext();
 
-        var act = () => NewService(ctx).CreateLocationFromRequestAsync(new LocationCreateRequestDTO
+        var act = () => NewService(ctx).CreateLocationFromRequestAsync(WithSiteFields(ctx, new LocationCreateRequestDTO
         {
             Name = "Warehouse",
             Contacts = new List<SiteContactRequestDTO>()
-        }, OrgWideAdmin(), CancellationToken.None);
+        }), OrgWideAdmin(), CancellationToken.None);
 
         (await act.Should().ThrowAsync<FluentValidation.ValidationException>())
             .Which.Errors.Should().ContainSingle(e => e.PropertyName == "Contacts");
@@ -130,11 +151,11 @@ public class LocationSiteContactsTests
         using var ctx = NewContext();
         var contacts = new List<SiteContactRequestDTO> { new() { Name = name, Phone = phone } };
 
-        var act = () => NewService(ctx).CreateLocationFromRequestAsync(new LocationCreateRequestDTO
+        var act = () => NewService(ctx).CreateLocationFromRequestAsync(WithSiteFields(ctx, new LocationCreateRequestDTO
         {
             Name = "Warehouse",
             Contacts = contacts
-        }, OrgWideAdmin(), CancellationToken.None);
+        }), OrgWideAdmin(), CancellationToken.None);
 
         if (expectedError == null)
         {
@@ -151,14 +172,14 @@ public class LocationSiteContactsTests
     {
         using var ctx = NewContext();
 
-        var act = () => NewService(ctx).CreateLocationFromRequestAsync(new LocationCreateRequestDTO
+        var act = () => NewService(ctx).CreateLocationFromRequestAsync(WithSiteFields(ctx, new LocationCreateRequestDTO
         {
             Name = "Warehouse",
             Contacts = new List<SiteContactRequestDTO>
             {
                 new() { Name = new string('x', 101), Phone = new string('5', 21) }
             }
-        }, OrgWideAdmin(), CancellationToken.None);
+        }), OrgWideAdmin(), CancellationToken.None);
 
         var thrown = (await act.Should().ThrowAsync<FluentValidation.ValidationException>()).Which;
         thrown.Errors.Should().Contain(e => e.ErrorMessage.Contains("cannot exceed 100"));
@@ -173,11 +194,11 @@ public class LocationSiteContactsTests
             .Select(i => new SiteContactRequestDTO { Name = $"C{i}", Phone = "555-0100" })
             .ToList();
 
-        var act = () => NewService(ctx).CreateLocationFromRequestAsync(new LocationCreateRequestDTO
+        var act = () => NewService(ctx).CreateLocationFromRequestAsync(WithSiteFields(ctx, new LocationCreateRequestDTO
         {
             Name = "Warehouse",
             Contacts = contacts
-        }, OrgWideAdmin(), CancellationToken.None);
+        }), OrgWideAdmin(), CancellationToken.None);
 
         (await act.Should().ThrowAsync<FluentValidation.ValidationException>())
             .Which.Errors.Should().ContainSingle(e => e.ErrorMessage.Contains("cannot exceed 20"));
diff --git a/Api.SeaHavenIndustries.Tests/SiteRegistryServiceTests.cs b/Api.SeaHavenIndustries.Tests/SiteRegistryServiceTests.cs
index 5e8c18c..c5a718f 100644
--- a/Api.SeaHavenIndustries.Tests/SiteRegistryServiceTests.cs
+++ b/Api.SeaHavenIndustries.Tests/SiteRegistryServiceTests.cs
@@ -423,13 +423,15 @@ public class SiteRegistryServiceTests
         using var cts = new CancellationTokenSource();
         var token = cts.Token;
         var data = new Mock<ILocationDataService>();
-        data.Setup(d => d.SiteCodeExistsAsync("BK5", null, null, token)).ReturnsAsync(true);
-        var service = NewService(data.Object, Mock.Of<IAccountDataService>());
+        data.Setup(d => d.SiteCodeExistsAsync("BK5", 1, null, token)).ReturnsAsync(true);
+        var accounts = new Mock<IAccountDataService>();
+        accounts.Setup(a => a.ExistsActiveAsync(1, token)).ReturnsAsync(true);
+        var service = NewService(data.Object, accounts.Object);
 
-        var act = () => service.CreateLocationFromRequestAsync(CreateRequest("BK5", null), OrgWide(), token);
+        var act = () => service.CreateLocationFromRequestAsync(CreateRequest("BK5", 1), OrgWide(), token);
 
         await act.Should().ThrowAsync<SiteCodeConflictException>();
-        data.Verify(d => d.SiteCodeExistsAsync("BK5", null, null, token), Times.Once);
+        data.Verify(d => d.SiteCodeExistsAsync("BK5", 1, null, token), Times.Once);
     }
 
     [Fact]
@@ -446,4 +448,56 @@ public class SiteRegistryServiceTests
         using var frozen = JsonDocument.Parse(workOrder.FrozenPoc!);
         frozen.RootElement.GetProperty("notes").GetString().Should().Be("Gate code 4411");
     }
+
+    public static TheoryData<string, Action<LocationCreateRequestDTO>, string> MissingSiteFields => new()
+    {
+        { "no client", r => r.AccountId = null, "Client is required." },
+        { "no street address", r => r.Address = "  ", "Street Address is required." },
+        { "no city", r => r.City = null, "City is required." },
+        { "no state", r => r.State = "", "State is required." },
+        { "no contacts list", r => r.Contacts = null, "At least one contact is required." },
+        { "empty contacts list", r => r.Contacts = new List<SiteContactRequestDTO>(), "At least one contact is required." },
+        { "contact without phone", r => r.Contacts = new List<SiteContactRequestDTO> { new() { Name = "Main", Phone = " " } }, "Contact phone is required." }
+    };
+
+    [Theory]
+    [MemberData(nameof(MissingSiteFields))]
+    public async Task Create_WithoutARequiredSiteField_IsAValidationErrorAndStoresNothing(
+        string _,
+        Action<LocationCreateRequestDTO> strip,
+        string expectedMessage)
+    {
+        using var ctx = NewContext();
+        SeedAccounts(ctx, 1);
+        var request = CreateRequest("BK9", 1);
+        strip(request);
+
+        var act = () => NewService(ctx).CreateLocationFromRequestAsync(request, OrgWide(), CancellationToken.None);
+
+        (await act.Should().ThrowAsync<FluentValidation.ValidationException>())
+            .Which.Errors.Should().Contain(e => e.ErrorMessage == expectedMessage);
+        ctx.Locations.Should().BeEmpty();
+    }
+
+    [Fact]
+    public async Task Delete_RemovesTheSiteFromEveryLegacyRead()
+    {
+        using var ctx = NewContext();
+        SeedAccounts(ctx, 1);
+        var deleted = SeedSite(ctx, "BK5", 1);
+        var kept = SeedSite(ctx, "BK6", 1);
+        var service = NewService(ctx);
+
+        (await service.DeleteLocationByIdAsync(deleted.Id, OrgWide(), CancellationToken.None)).Should().BeTrue();
+
+        (await service.GetLocationByIdAsync(deleted.Id)).Should().BeNull();
+        (await service.GetLocationByIdWithDetailsAsync(deleted.Id)).Should().BeNull();
+        (await service.LocationExistsAsync(deleted.Id)).Should().BeFalse();
+        (await service.GetTotalLocationCountAsync()).Should().Be(1);
+        (await service.GetAllLocationsAsync()).Select(l => l.Id).Should().Equal(kept.Id);
+        (await service.GetLocationsByAccountIdAsync(1)).Select(l => l.Id).Should().Equal(kept.Id);
+        (await service.GetLocationsPagedAsync(1, 10)).Items.Select(l => l.Id).Should().Equal(kept.Id);
+        (await new LocationDataService(ctx).GetAddressbookPagedAsync(1, 10)).TotalCount.Should().Be(1);
+        (await new VendorOperationsDataService(ctx, Mock.Of<IDispatchDataService>()).LocationExistsAsync(deleted.Id, CancellationToken.None)).Should().BeFalse();
+    }
 }
diff --git a/SeaHaven.DataServices/Implementation/LocationDataService.cs b/SeaHaven.DataServices/Implementation/LocationDataService.cs
index d1553a2..5215e0e 100644
--- a/SeaHaven.DataServices/Implementation/LocationDataService.cs
+++ b/SeaHaven.DataServices/Implementation/LocationDataService.cs
@@ -17,25 +17,25 @@ namespace SeaHaven.DataServices.Implementation
 
         public async Task<Locations?> GetByIdAsync(int id)
         {
-            return await _context.Locations.FindAsync(id);
+            return await _context.Locations.FirstOrDefaultAsync(l => l.Id == id && l.IsDeleted != true);
         }
 
         public async Task<Locations?> GetByIdWithDetailsAsync(int id)
         {
             return await _context.Locations
-                .FirstOrDefaultAsync(l => l.Id == id);
+                .FirstOrDefaultAsync(l => l.Id == id && l.IsDeleted != true);
         }
 
         public async Task<IEnumerable<Locations>> GetAllAsync()
         {
-            return await _context.Locations.ToListAsync();
+            return await _context.Locations.Where(l => l.IsDeleted != true).ToListAsync();
         }
 
         public async Task<IEnumerable<Locations>> GetByAccountIdAsync(int accountId)
         {
             return await _context.Locations
                 .AsNoTracking()
-                .Where(l => l.AccountId == accountId)
+                .Where(l => l.AccountId == accountId && l.IsDeleted != true)
                 .ToListAsync();
         }
 
@@ -57,7 +57,7 @@ namespace SeaHaven.DataServices.Implementation
             int pageSize,
             string? search = null)
         {
-            var query = _context.Locations.AsQueryable();
+            var query = _context.Locations.Where(l => l.IsDeleted != true);
 
             if (!string.IsNullOrWhiteSpace(search))
             {
@@ -125,12 +125,12 @@ namespace SeaHaven.DataServices.Implementation
 
         public async Task<bool> ExistsAsync(int id)
         {
-            return await _context.Locations.AnyAsync(l => l.Id == id);
+            return await _context.Locations.AnyAsync(l => l.Id == id && l.IsDeleted != true);
         }
 
         public async Task<int> CountAsync()
         {
-            return await _context.Locations.CountAsync();
+            return await _context.Locations.CountAsync(l => l.IsDeleted != true);
         }
 
         public async Task<(List<Locations> Items, int TotalCount)> GetListPagedAsync(
@@ -313,7 +313,7 @@ namespace SeaHaven.DataServices.Implementation
         {
             search ??= "";
 
-            var query = _context.Locations.AsQueryable();
+            var query = _context.Locations.Where(l => l.IsDeleted != true);
 
             if (!string.IsNullOrWhiteSpace(search))
             {
diff --git a/SeaHaven.DataServices/Implementation/VendorOperationsDataService.cs b/SeaHaven.DataServices/Implementation/VendorOperationsDataService.cs
index 4fabfba..1ae72ac 100644
--- a/SeaHaven.DataServices/Implementation/VendorOperationsDataService.cs
+++ b/SeaHaven.DataServices/Implementation/VendorOperationsDataService.cs
@@ -150,7 +150,7 @@ namespace SeaHaven.DataServices.Implementation
         }
 
         public Task<bool> LocationExistsAsync(int locationId, CancellationToken cancellationToken)
-            => _context.Locations.AnyAsync(location => location.Id == locationId, cancellationToken);
+            => _context.Locations.AnyAsync(location => location.Id == locationId && location.IsDeleted != true, cancellationToken);
 
         public async Task<Dictionary<int, Vendor>> GetVendorsByIdsAsync(IReadOnlyCollection<int> vendorIds, CancellationToken cancellationToken)
             => await _context.Vendors.Where(vendor => vendorIds.Contains(vendor.Id))
diff --git a/SeaHaven.Services/Implementation/LocationService.cs b/SeaHaven.Services/Implementation/LocationService.cs
index bc1772a..fabeb97 100644
--- a/SeaHaven.Services/Implementation/LocationService.cs
+++ b/SeaHaven.Services/Implementation/LocationService.cs
@@ -273,6 +273,7 @@ namespace SeaHaven.Services.Implementation
             CancellationToken cancellationToken)
         {
             await EnsureAccountAssignableAsync(user, request.AccountId, existingLocationAccountId: null, cancellationToken);
+            ThrowOnMissingSiteFields(request);
 
             var siteCode = request.Name?.Trim();
             if (string.IsNullOrEmpty(siteCode))
@@ -300,10 +301,7 @@ namespace SeaHaven.Services.Implementation
                 Notes = NormalizeNotes(request.Notes)
             };
 
-            if (request.Contacts is List<SiteContactRequestDTO> contacts)
-            {
-                ApplySiteContactsForCreate(location, contacts, GetActorId(user));
-            }
+            ApplySiteContactsForCreate(location, request.Contacts!, GetActorId(user));
 
             await _locationDataService.AddAsync(location, cancellationToken);
         }
@@ -548,6 +546,25 @@ namespace SeaHaven.Services.Implementation
         private static string? GetActorId(ClaimsPrincipal user) =>
             user.FindFirst(ClaimTypes.NameIdentifier)?.Value;
 
+        /// <summary>A new site needs a client, a full address and at least one point of contact.</summary>
+        private static void ThrowOnMissingSiteFields(LocationCreateRequestDTO request)
+        {
+            var failures = new List<ValidationFailure>();
+            if (request.AccountId == null)
+                failures.Add(new ValidationFailure(nameof(LocationCreateRequestDTO.AccountId), "Client is required."));
+            if (string.IsNullOrWhiteSpace(request.Address))
+                failures.Add(new ValidationFailure(nameof(LocationCreateRequestDTO.Address), "Street Address is required."));
+            if (string.IsNullOrWhiteSpace(request.City))
+                failures.Add(new ValidationFailure(nameof(LocationCreateRequestDTO.City), "City is required."));
+            if (string.IsNullOrWhiteSpace(request.State))
+                failures.Add(new ValidationFailure(nameof(LocationCreateRequestDTO.State), "State is required."));
+            if (request.Contacts == null || request.Contacts.Count == 0)
+                failures.Add(new ValidationFailure(nameof(LocationCreateRequestDTO.Contacts), "At least one contact is required."));
+
+            if (failures.Count > 0)
+                throw new ValidationException(failures);
+        }
+
         private static void ThrowOnInvalidContacts(List<SiteContactRequestDTO> contacts)
         {
             var failures = SiteContactsValidation.Validate(contacts);