diff --git a/design/###-tools-visualstudio.md b/design/###-tools-visualstudio.md
new file mode 100644
index 0000000..4c74f79
--- /dev/null
+++ b/design/###-tools-visualstudio.md
@@ -0,0 +1,46 @@
+
+# Proposal: Tools - Visual Studio 2017 (15.2) required
+
+| **Status**        | **Proposed/Accepted/Deprecated** |
+|:------------------|:---------------------------------------------|
+| **RFC #**         | ####                                         |
+| **Submitted**     | YYYY-MM-DD                                   |
+| **Dependencies**  | RFC #, #                                     |
+
+---
+
+## Summary
+Declare **Microsoft Visual Studio 2017 (15.2)** as the minimal version supported.
+
+
+## Motivation
+Visual Studio 2017 (15.2) was [released on May 2017](https://docs.microsoft.com/visualstudio/releasenotes/vs2017-relnotes-v15.2). This version allows to install
+side-by-side different versions of the MSVC toolset, it allows you to [build binaries
+that are fully compatible with the ones built using older versions](https://devblogs.microsoft.com/cppblog/stuck-on-an-older-toolset-version-move-to-visual-studio-2015-without-upgrading-your-toolset/).
+
+Visual Studio 2017 (15.2) includes [`wswhere` application](https://github.com/microsoft/vswhere). 
+This tool is needed Conan to locate Visual Studio installation and toolsets available (link to proposal required).
+
+
+## Proposal
+Declare **Visual Studio 2017 (15.2)** as the minimal version supported.
+
+
+## Alternative Approaches
+Conan migth need Visual Studio 2017 (15.2) **installed**, but it can target older 
+versions (`vswhere` is able to find older installations too).
+
+
+## Detailed Design
+
+
+## Open issues
+ * Evidence of CLI changes (calling MSBuild or other tools), format changes 
+   in the `.props` files or the data available to them (used in Conan generators
+   and toolchains). Besides locating the installation, is there any reason not to
+   support older versions?
+
+ * MSBuild doesn't support long paths until version 16.0 ([link](https://github.com/dotnet/msbuild/issues/53#issuecomment-459062618)).
+
+
+## Future Extensions