diff --git a/src/errors.ts b/src/errors.ts
deleted file mode 100644
index 82894b138..000000000
--- a/src/errors.ts
+++ /dev/null
@@ -1,99 +0,0 @@
-import { HorizonApi } from "./horizon/horizon_api";
-
-// For ES5 compatibility (https://stackoverflow.com/a/55066280).
-/* tslint:disable:variable-name max-classes-per-file */
-
-export class NetworkError extends Error {
-  public response: {
-    data?: HorizonApi.ErrorResponseData;
-    status?: number;
-    statusText?: string;
-    url?: string;
-  };
-  public __proto__: NetworkError;
-
-  constructor(message: string, response: any) {
-    const trueProto = new.target.prototype;
-    super(message);
-    this.__proto__ = trueProto;
-    this.constructor = NetworkError;
-    this.response = response;
-  }
-
-  public getResponse() {
-    return this.response;
-  }
-}
-
-export class NotFoundError extends NetworkError {
-  constructor(message: string, response: any) {
-    const trueProto = new.target.prototype;
-    super(message, response);
-    this.__proto__ = trueProto;
-    this.constructor = NotFoundError;
-    this.name = "NotFoundError";
-  }
-}
-
-export class BadRequestError extends NetworkError {
-  constructor(message: string, response: any) {
-    const trueProto = new.target.prototype;
-    super(message, response);
-    this.__proto__ = trueProto;
-    this.constructor = BadRequestError;
-    this.name = "BadRequestError";
-  }
-}
-
-export class BadResponseError extends NetworkError {
-  constructor(message: string, response: any) {
-    const trueProto = new.target.prototype;
-    super(message, response);
-    this.__proto__ = trueProto;
-    this.constructor = BadResponseError;
-    this.name = "BadResponseError";
-  }
-}
-
-/**
- * AccountRequiresMemoError is raised when a transaction is trying to submit an
- * operation to an account which requires a memo. See
- * [SEP0029](https://github.com/stellar/stellar-protocol/blob/master/ecosystem/sep-0029.md)
- * for more information.
- *
- * This error contains two attributes to help you identify the account requiring
- * the memo and the operation where the account is the destination
- *
- * ```
- * console.log('The following account requires a memo ', err.accountId)
- * console.log('The account is used in operation: ', err.operationIndex)
- * ```
- *
- */
-export class AccountRequiresMemoError extends Error {
-  public __proto__: AccountRequiresMemoError;
-  /**
-   * accountId account which requires a memo.
-   */
-  public accountId: string;
-  /**
-   * operationIndex operation where accountId is the destination.
-   */
-  public operationIndex: number;
-
-  /**
-   * Create an AccountRequiresMemoError
-   * @param {string} message error message
-   * @param {string} accountId The account which requires a memo.
-   * @param {number} operationIndex The index of the operation where `accountId` is the destination.
-   */
-  constructor(message: string, accountId: string, operationIndex: number) {
-    const trueProto = new.target.prototype;
-    super(message);
-    this.__proto__ = trueProto;
-    this.constructor = AccountRequiresMemoError;
-    this.name = "AccountRequiresMemoError";
-    this.accountId = accountId;
-    this.operationIndex = operationIndex;
-  }
-}
diff --git a/src/errors/account_requires_memo.ts b/src/errors/account_requires_memo.ts
new file mode 100644
index 000000000..2b493f4da
--- /dev/null
+++ b/src/errors/account_requires_memo.ts
@@ -0,0 +1,37 @@
+/**
+ * AccountRequiresMemoError is raised when a transaction is trying to submit an
+ * operation to an account which requires a memo. See
+ * [SEP0029](https://github.com/stellar/stellar-protocol/blob/master/ecosystem/sep-0029.md)
+ * for more information.
+ *
+ * This error contains two attributes to help you identify the account requiring
+ * the memo and the operation where the account is the destination
+ *
+ * @example
+ * console.log('The following account requires a memo ', err.accountId)
+ * console.log('The account is used in operation: ', err.operationIndex)
+ *
+ */
+export class AccountRequiresMemoError extends Error {
+  public __proto__: AccountRequiresMemoError;
+  public accountId: string;
+  public operationIndex: number;
+
+  /**
+   * Create an AccountRequiresMemoError
+   * @param {string} message Human-readable error message
+   * @param {string} accountId The account which requires a memo
+   * @param {number} operationIndex The index of the operation where `accountId` is the destination
+   */
+  constructor(message: string, accountId: string, operationIndex: number) {
+    const trueProto = new.target.prototype;
+    super(message);
+    this.__proto__ = trueProto;
+    this.constructor = AccountRequiresMemoError;
+    this.name = "AccountRequiresMemoError";
+    /** @type {string} account which requires a memo. */
+    this.accountId = accountId;
+    /** @type {number} operation where accountId is the destination. */
+    this.operationIndex = operationIndex;
+  }
+}
diff --git a/src/errors/bad_request.ts b/src/errors/bad_request.ts
new file mode 100644
index 000000000..d82ef7cd4
--- /dev/null
+++ b/src/errors/bad_request.ts
@@ -0,0 +1,22 @@
+import { NetworkError } from "./network";
+
+/**
+ * BadRequestError is raised when a request made to Horizon is invalid in some
+ * way (incorrect timebounds for trade call builders, for example.)
+ * @extends NetworkError
+ * @inheritdoc
+ */
+export class BadRequestError extends NetworkError {
+  /**
+   * Create a BadRequestError.
+   * @param {string} message Human-readable error message
+   * @param {any} response Response details, received from the Horizon server
+   */
+  constructor(message: string, response: any) {
+    const trueProto = new.target.prototype;
+    super(message, response);
+    this.__proto__ = trueProto;
+    this.constructor = BadRequestError;
+    this.name = "BadRequestError";
+  }
+}
diff --git a/src/errors/bad_response.ts b/src/errors/bad_response.ts
new file mode 100644
index 000000000..97d0cc68a
--- /dev/null
+++ b/src/errors/bad_response.ts
@@ -0,0 +1,24 @@
+import { NetworkError } from "./network";
+
+/**
+ * BadResponseError is raised when a response from a {@link module:Horizon} or
+ * {@link module:Federation} is invalid in some way. For example, a federation
+ * response may exceed the maximum allowed size, or a transaction submission may
+ * have failed with Horizon.
+ * @extends NetworkError
+ * @inheritdoc
+ */
+export class BadResponseError extends NetworkError {
+  /**
+   * Create a BadResponseError.
+   * @param {string} message Human-readable error message.
+   * @param {any} response Response details, received from the Horizon server.
+   */
+  constructor(message: string, response: any) {
+    const trueProto = new.target.prototype;
+    super(message, response);
+    this.__proto__ = trueProto;
+    this.constructor = BadResponseError;
+    this.name = "BadResponseError";
+  }
+}
diff --git a/src/errors/index.ts b/src/errors/index.ts
new file mode 100644
index 000000000..cb4f19458
--- /dev/null
+++ b/src/errors/index.ts
@@ -0,0 +1,5 @@
+export * from "./network";
+export * from "./not_found";
+export * from "./bad_request";
+export * from "./bad_response";
+export * from "./account_requires_memo";
diff --git a/src/errors/network.ts b/src/errors/network.ts
new file mode 100644
index 000000000..f22114408
--- /dev/null
+++ b/src/errors/network.ts
@@ -0,0 +1,46 @@
+import { HorizonApi } from "../horizon/horizon_api";
+
+// For ES5 compatibility (https://stackoverflow.com/a/55066280).
+
+/**
+ * NetworkError is raised when an interaction with a Horizon server has caused
+ * some kind of problem.
+ */
+export class NetworkError extends Error {
+  public response: {
+    data?: HorizonApi.ErrorResponseData;
+    status?: number;
+    statusText?: string;
+    url?: string;
+  };
+  public __proto__: NetworkError;
+
+  /**
+   * Create a NetworkError.
+   * @param {string} message Human-readable error message
+   * @param {any} response Response details, received from the Horizon server
+   */
+  constructor(message: string, response: any) {
+    const trueProto = new.target.prototype;
+    super(message);
+    this.__proto__ = trueProto;
+    this.constructor = NetworkError;
+    /**
+     * @typedef {Object}
+     * @property {HorizonApi.ErrorResponseData} [data] The data returned by Horizon as part of the error: {@link https://developers.stellar.org/network/horizon/api-reference/errors/response | Error Response}
+     * @property {number} [status] HTTP status code describing the basic issue with a submitted transaction {@link https://developers.stellar.org/network/horizon/api-reference/errors/http-status-codes/standard | Standard Status Codes}
+     * @property {string} [statusText] A human-readable description of what the status code means: {@link https://developers.stellar.org/network/horizon/api-reference/errors/http-status-codes/horizon-specific | Horizon-Specific Status Codes}
+     * @property {string} [url] URL which can provide more information about the problem that occurred.
+     */
+    this.response = response;
+  }
+
+  /**
+   * Get the response object that created this error.
+   * @returns {any}
+   */
+  public getResponse() {
+    return this.response;
+  }
+}
+
diff --git a/src/errors/not_found.ts b/src/errors/not_found.ts
new file mode 100644
index 000000000..040e60edc
--- /dev/null
+++ b/src/errors/not_found.ts
@@ -0,0 +1,22 @@
+import { NetworkError } from "./network";
+
+/**
+ * NotFoundError is raised when the resource requested from Horizon is
+ * unavailable.
+ * @extends NetworkError
+ * @inheritdoc
+ */
+export class NotFoundError extends NetworkError {
+  /**
+   * Create a NotFoundError.
+   * @param {string} message Human-readable error message
+   * @param {any} response Response details, received from the Horizon server
+   */
+  constructor(message: string, response: any) {
+    const trueProto = new.target.prototype;
+    super(message, response);
+    this.__proto__ = trueProto;
+    this.constructor = NotFoundError;
+    this.name = "NotFoundError";
+  }
+}