This started with using a vanilla Shack Wall and Roof to make a guard hut so the poor guards could have a roof over their heads. But the vanilla Shack Wall and Roof didn't look very intimidating compared to the Guard Post. So did a mashup of a Shack Wall and Roof and the Guard Post. Then the new guard shack needed sides so did a mashup of a balcony railing with guard post parts. Next it needed a way to snap the railing to the sides of the guard shack. This lead to figuring out how connections work and finding all sorts of cool existing meshes in the base game Shacks folder that didn't have connection points or a workshop recipe to create the object. So started adding connections to building parts and adding them into the game. Also modified a few meshes to add connection points for easier settlement building.
Some building parts maybe duplicated in other mods but seemed like they only had a few and scattered in different menus. All parts (except the guard tower) are from base game folders and modified as needed to make them work as building objects.

Basically sharing stuff I wanted for my game. Maybe someone else will find it interesting.

ESP has ESL flag to help with load limits.
Built for OG 1.10.163 version.
NG Compatibility - Should work but someone with NG will have to test and let me know.

Requirements:
DLCworkshop02
DLCCoast
Settlement Menu Manager

Recommendations:
Place Anywhere - Greatly assists in placing objects.
A Mod with placeable guard mats or invisible guard markers.

Incompatibilities:
Mods that edit the same vanilla meshes. 
Mods that add a new guard post/tower will not work with the Guard Post Roof from this mod.

Changes to vanilla objects:
Added a new recipe category "Wall and Roof" to help unclutter wood walls.
Shack Wall and Roofs - Added Balcony Railing Connection to ends.
Shack Wall Corner - Added Balcony Railing Connection to ones without walls.
Guard Tower - Added floor connection to allow new guard roof to connect.
Shack Wall and Roofs - Moved to new category "Wall and Roof" under wood building.
Shack Wall Corners - Moved to new category "Wall and Roof" under wood building.
Shack Wall Flat Ends - Moved to new category "Wall and Roof" under wood building.
Metal Wall and Roofs - Added Balcony Railing Connection to ends.

Additions:
Added a new recipe category Supports under Wood Structures.
Added a new recipe category Guard Misc for Sandbags and Bollard.
Guard Post Static - With no guard marker and 1 Defense - For use with other mods that add guard post markers.
Guard Tower Static - With no guard marker and 2 Defense - For use with other mods that add guard post markers.
Guard Shack Wall and Roof with no guard marker and 1 Defense - Mashup of Shack Wall and Roof and the Guard Post, for use with other mods that add guard post markers.
Guard Metal Wall and Roof with no guard marker and 1 Defense - Mashup of Metal Wall and Roof and the Guard Post, for use with other mods that add guard post markers.
Guard Post Roof with Happiness - Mashup of angled shack roof and Shack Wall and Roof, Shack Wall and Roof to give guards shelter from the rain. Snaps to floor connection of Guard Post and Tower.
Armored Shack Wall and Roof - Same as Guard Shack Wall and Roof but no Defense.
Armored Balcony Railing - Mashup of Guard Post and a Shack Balcony Railing for visual appeal to go with the Guard Shack Wall and Roof.
Armored Metal Balcony Railing - Mashup of Guard Post, Metal Wall and a Shack Balcony Railing for visual appeal to go with the Guard Shack Wall and Roof.
Sandbag Wall and pile - Indestructible 
Sandbag Wall Armored - With 1 Defense and Indestructible. Mashup of Sandbag Wall and Guard Post
Bollard - Indestructible
Shack Balcony Railing - Added 2 single and 4 double railings, modification and mashup of vanilla railings.
Shack Wall Lower Half - 2 versions. Vanilla Mesh: Added wall/floor connections and workshop recipe.
Shack Wall Left/Right Half - 2 versions. Vanilla Mesh: Added wall/floor connections and workshop recipe.
Shack Wall Doorway - 2 versions. Vanilla Mesh: Added workshop recipe.
Shack Wall Cap Half - 5 versions. Vanilla Mesh: Added wall/floor connections and workshop recipe.
Shack Wall Inner Corner with Roof - 2 versions. Vanilla Mesh: Added wall/floor connections and workshop recipe.
Shack Wall Corner - 3 versions. Vanilla Mesh: Added wall/floor connections and workshop recipe.
Shack Wall Flat Ends - 2 versions. Vanilla Mesh: Added wall/floor connections and workshop recipe.
Shack Column - 3 Versions of the same mesh with different connections. Added Floor/Ceiling/Balcony connections and workshop recipes.
Shack Mid Free Supports - 2 versions. Added Floor/Ceiling/Balcony connections and workshop recipes.
Shack Floor Supports 1 - Copy of Vanilla Mesh: Added Floor/Balcony connections and workshop recipes. Adjusted Mesh so collision is below top of post, was blocking NPC navmesh.
Shack Floor Supports 2 - Mashup, removed top from a shack bridge. Added Floor/Balcony connections and workshop recipes. Adjusted Mesh so collision is below top of post, was blocking NPC navmesh.
Shack Floor Supports 3 - Copy of Vanilla Mesh: Added Floor/Balcony connections and workshop recipes. Adjusted Mesh so collision is below top of post, was blocking NPC navmesh.
Metal Wall and Roof - Mashup of "balcony" Wood Wall and Roof replacing wood parts with metal parts.
Metal Outside Corner - New Mashup version of open corner with no walls. Has balcony connections points.
Metal Balcony Railing - 2 single and 2 double railings. Mashup of Balcony Railing and metal parts
Barn Posts - 3 Versions of each Vanilla mesh with different connections. Added Floor/Ceiling/Balcony connections and workshop recipes. 
Warehouse Posts - 3 Versions of Vanilla each mesh with different connections. Added Floor/Ceiling/Balcony connections and workshop recipes. 

Notes:
Balcony Connection points will also allow stairs to snap at these locations.

New Guard structures have issues with other objects not wanting to snap to surface. Not really sure why. Recommend using Place Anywhere to place guard markers on them.
Alot of items, especially the supports and columns, have lots of snap points. Can take some effort to get the item to snap to the spot desired. Sometimes the order items are connected makes a difference. Sometimes moving to a different side of the object helps get the right connection.

Some Items have double sided connections to allow for another item to be snapped to the other side. For example, Shack column connects to floor connection but has a second-floor connection to allow another floor to be connected for placing column in the middle of a room. To place after a structure is built, move a floor piece, snap new item in and replace floor piece.

Updated Navmesh for items that needed it.

New Balcony Railings may appear open, but collisions were not changed. So no shooting between the railings.

Credits:
Snappable Junk Fences by DarthWayne
Snappable Junk Fences at Fallout 4 Nexus - Mods and community (nexusmods.com)
- Used their GuardTower01.nif as basis for Guard Tower Static

Remaining assets are from base Fallout4 and DLC game assets.

Tools Used:
Creation Kit
xEdit
NifSkope
Outfit Studio