Jamaica Plain

Once you have killed all the ghouls, there is a workshop which you can activate and then you can create a settlement there.

There are two easy ways to tell if you have killed all the ghouls. One way is to look at the map in your Pip Boy and see if it says "Cleared". Another way is to try to activate the workshop. It will tell you if any ghouls remain alive.

If you have trouble finding the last remaining ghoul(s), the easiest way is to take a Berry Mentat. This will cause the ghouls to be highlighted even if they are behind walls, so you can just walk in a loop around town looking for them.

For information about crafting Berry Mentats (among other things), see the chemistry station page.

The ingredients for making Berry Mentats are not real plentiful. It would be nice to keep popping Berry Mentats until you have gotten all the ghouls, but if you only have a couple, you may want to save them for use only if you are unable to find the last ghoul(s) on your own.

Since the ghouls here tend to attack in mobs, the Spray n' Pray is built for this battle. It does take a lot of 45mm ammo though. See Getting The Best Weapons Early.

More about Jamaica Plain:

The basement in city hall is much ado about nothing and is not required.

If you still want to visit it, then before going into city hall, head east from it to the church. Its door is chained on the inside. Go to the building to the right of it. There will be ghouls in that building (but not in the church). After killing them, go up three flights of stairs, cross over to the church's roof, drop through a hole in the roof, and go to the ground floor.

The mayor's corpse is in a pew near the chained door. Get his ID and go to city hall.

There are some ghouls on the ground floor and upstairs. When you enter through the double doors, the ghouls on the ground floor will attack. Just stand at the entry and kill them.

Then continue straight to a closed door of a bathroom. Turn right and go past the missing wall to some stairs to upstairs and finish the last ghouls.

If the map says that Jamaica Plain is cleared, turn right when you exit city hall, go past the big bus and head straight into the workshop and activate the workshop bench.

The building the workshop is in was originally a 2-story duplex. The right side has the workshop downstairs. Its ceiling and the floor and roof above it are mostly destroyed. A lot of damage was done to the right side of the workshop wall. A lot of dirt and debris is on the floor where the wall was.

Exit the workshop and turn right to go up some stairs to a half-walled, empty parking lot. As you come up the stairs, there is a large building on the left which is not part of the settlement building area. The parking lot is.

No Room to Spare:

The big problem is that the allowed building size limit is not enough to adequately do all this building because something is terribly wrong with the game's calculation of the size limit.

There are two ways to defend against invaders: One way is to wall off the open areas around the two buildings and the paved area. I quickly hit the size limit trying this, which was not surprising since I was using concrete walls. I didn't have enough of the size limit left to build an adequate garden.

Next I tried no walls and put some structures in the paved area with turrets overlooking the front ot the outside front of the workshop building on one side and the paved area on the other side.

I had a complete garden but only had defense of 65 and no size limit left for future use such as for stores.

Before I started building, the size limit bar was only at about one quarter. Almost all of the other settlements I've built up, the size bar started at about three quarters. I typically build structures for at least 20 beds, a defense rating of at least 125 and sometimes 150+, and stores and a lot more and have never run up against the limit, so what's the deal with Jamaica Plain?

My third attempt was inspired by a video which had the garden in front of the duplex. There was just enough room for four garden plots which hold most of the food requirements. A couple of planter boxes and piles of dirt provide the missing, needed garden space.

There was barely enough space left for a few stores and scrapping stations, but I was getting close to the size limit and had not started on Defense. Eventually, I was forced to use the size glitch below.

So Jamaica Plain stands out as the only F4 settlement area without a reasonable size limit.

I started a new game after the above and first went to Abernathy Farm. I built out the settlement with more than stuff than Jamaica Plain, including about 115 Defense (all turrets). When I started, the size limit needle was a hair over half and it was not over 3/4ths when I was done.

The Size Limit Glitch:

The size limit problem - and the work around for it - has been known since day one. Build up a supply of 10-20 weapons, the more expensive and upgraded the better.

Drop the weapons on the ground, one at a time. Activate the work shop building mode. Point at each weapon and instead of scrapping it, put it in the workshop. You will see the size limit bar going down as you do this. When you are done building, you can exit the building mode and transfer your weapons back from the workshop to your backpack.

You can repeat this if needed, but I wouldn't do it more than 2-3 times. Taking it too far can cause the game to glitch and even crash.

After quitting the game (at Jamaica Plain) and later restarted, the first thing I noticed was that when I tried to load a save, no saves showed up except the one it made when quitting. Then it told me that none of my many mods were loaded and asked if I want to load them. I said yes, but it was taking forever and showing me nothing but a flashing icon.

After four hours, I gave up, restarted, and it kept coming back to trying to reload the mods. I'll skip everything I tried, but eventually it got to the starting menu. I went through the list of mods and most of them were loaded, so I reloaded the remaining ones. It took about 5 minutes.

The game continued to show the same mods as not loaded, I continuted to reload, and blah, blah, blah -- I gave up and started a completely new game.

In all the many years I've played F4 (and other games), nothing like this has ever happened.. I suspect if was from repeatedly trying the Size Limit Glitch, but have no way of proving it, and I was also using the Wi-Fi Glitch. (BTW, I'm using a Xbox One.)

The Jamaica Plain build videos I've watched either had little or no defense (which is the biggest user of Size) or they used the size glitch or both.