Yes - the Lot Adjuster works for that. I have BV, so when I do that, I tick the "Is beach lot" box, at the same time as adding the land.
So... I don't know what it would do if you didn't have BV? At the very least, make sure the terrain is set to match the neighborhood - NOT flat.
Good luck!


Exactly what @simsample said. (And that grid view is freaky! )
You can use the NeighborhoodTerrain cheat right over roads, and raise/lower the whole island. You just can't use it on already placed lots. The area needs to be free of all lots.

I have a tip about how to create smooth beach lots at the beginning of my Build a Pier workshop video. (Cue it up around 4 minutes.) Now... that is for a different hood, but the same idea will work for your island too.

To get your beach lots lower - on your custom hood - I would start with the one place the beach lot did place, and work from there.

I downloaded a small, but sumptuously furnished house by angellasimmer. The house came with a gnome standing by the front door. I placed the house near the sea end of Woodland Drive in Pleasantview, and moved two Sims (an adult Kiera Neville, and a teenage boy Lorian McNeill) into it. I understand that Keira has been asked to look after Lorian. On Wednesday evening Jennifer Burb came for dinner. While dinner was being served, Jennifer slipped outside and stole the gnome! She then went back in, enjoyed her dinner, and eventually went home, with the good wishes of Keira and Lorian, but no doubt with their gnome stuffed into her inventory.

Believe it or not, this is the first time a gnome has been stolen in my game, and I don't know what to expect next. When I play the Burbs, should I expect Jennifer to get the gnome out and stand it up somewhere? And then should I expect Keira or Lorian to come round to steal it back? Should I do anything? Or should I leave it up to my Sims to sort this matter out among themselves? Such a thing has never happened in my game before, and I just don't know what, if anything, to do!

@AndrewGloria - yes, Sims steal gnomes

Sims also go and steal their gnomes back - they tell you with a pop-up (I am going to steal my gnome back) and off they go.

Some of my sims have returned with a collection of gnomes, which they certainly did not own before....

Oh, this is one of my favourite things in The Sims 2! I keep records of who has stolen who's gnome, and one gnome in Lacuna D has beem stolen and retrieved through many generations of the same household.

No, the sim who steals does not get a gnome in their inventory. I wish they did! But, someone in the family of the stolen gnome will get a push, usually 11.30PM onward, to steal back the gnome. They will walk to the edge of the lot then rub their hands with glee, and do the mischievious giggle that sims stealing the newspaper do. They creep off the lot and return sometime later, either with the gnome in their inventory, or they will put it near the mailbox if nothing is in the way. If the gnome is in their inventory you will get a pop-up to say, 'I have stolen back my gnome, it is in my inventory'. If they miss the push, for example if they are busy or asleep, they may get the push again the next night, or even some nights later. I've had occasions where I've given up on the gnome being stolen back and purchased another, only to have a sim steal it back after a couple of weeks! It always seems to be the same sim who steals the gnome back. I'm not sure where the information for that is stored, does anyone know? In the lot file, maybe?

So, if I want to see where this goes next, I don't move on to play the Burbs, but I go on playing Keira and Lorian. I think at 11:30 on Wednesday night Lorian may have been in bed with his new boyfriend. Actually I don't think either of them has been outside the house since Jennifer Burb left, so maybe they don't even know that their gnome is missing yet. Or, considering how my Sims like to burn the candle at both ends, it is quite likely that it was after midnight when Jennifer went home.

Anyway I'll play Keira and Lorian for at least another day and see what happens. With my "Aging off" playstyle, I don't have to worry and households getting out of sync.

P.S. I thought I'd add a picture of the house (167 Woodland Drive) taken minutes after Keira and Lorian moved in:
It's a small house, but it looks enormous compared to Lorian and Keira playing together in the garden. If you look carefully you can the Gnome between the mailbox and the front steps.

I think something like this:



The picture is from a tutorial, showing the difference between toggling the "beach lot" box in LotAdjuster. Since you don't have BV, you'd never get the beach-style rendering, so I think you'd have a thin, odd-looking layer of blue just kind of floating around. Think ponds, but uglier.