benachbart
neighboring / adjacent
Located directly next door or in the immediate vicinity; adjoining.
Wir haben unsere benachbarten Grundstücke durch einen Zaun getrennt.
We separated our neighboring properties with a fence.

neighboring / adjacent
Loading your saved state.
neighboring / adjacent
Located directly next door or in the immediate vicinity; adjoining.
Wir haben unsere benachbarten Grundstücke durch einen Zaun getrennt.
We separated our neighboring properties with a fence.

The word 'benachbart' (neighboring/adjacent) is derived directly from the noun 'der Nachbar' (the neighbor). It literally describes the state of being a neighbor of something or having something as a neighbor.
Die beiden benachbarten Häuser teilen sich einen Garten.
The two neighboring houses share a garden.
'Benachbart' is almost always used as an adjective before a noun (attributive). Using it as a standalone adjective after the noun (predicative), as in 'Die Grundstücke sind benachbart' (the properties are adjacent), is grammatically correct but less common.
Wir besuchten ein Restaurant in einer benachbarten Straße.
We visited a restaurant on a neighboring street.
Common nouns combined with 'benachbart' refer to places and areas. Typical examples are 'benachbarte Länder' (neighboring countries), 'benachbarte Städte' (neighboring cities), 'benachbarte Zimmer' (neighboring rooms), or 'benachbarte Regionen' (neighboring regions).
Die Lärmbelästigung kam aus dem benachbarten Zimmer.
The noise was coming from the neighboring room.
immediately
'sofort' and 'benachbart' can be similar only in a special meaning that is rare today. 'benachbart' is the normal word when something is directly next door or nearby. In modern German, 'sofort' almost always means 'without waiting' or 'immediately'. The spatial meaning of 'sofort' as 'directly adjacent' is outdated or regional. That is why 'benachbart' is almost always clearer in modern texts when talking about places or buildings.

Das benachbarte Haus gehört seit Jahren einer Familie aus Köln.
The neighboring house has belonged to a family from Cologne for years.
In einem alten Text steht, dass die Wiese sofort am Hof liegt.
In an old text, it says that the meadow lies directly adjacent to the farm.