Yes, and in Bricket Wood the paperwork is unusually light. Only two buildings are listed. No conservation area covers the village. The neighbours put in planning applications at a steady rate. The clay under some gardens is the thing to watch, more than the planners.
Historic England lists two buildings in Bricket Wood, both Grade II, with none at Grade I or Grade II*. Listing means consent is needed for almost any change to the building, inside or out, so for the owners of those two houses a new window or a knocked-through wall goes through the council first. For everyone else, listing doesn't come into it. The village's history runs to fairgrounds, a naturist camp and 1950s housing estates, and none of them was built with posterity in mind.
One scheduled monument lies in the area around the village. That is the strictest level of protection, and it matters mainly to anyone whose land borders it.
The planning register for the area recorded 1,618 applications between April 2024 and June 2026, 704 of them in the last twelve months. Those numbers tell you nothing about how many were approved, but they show that people here alter their homes as a matter of routine. For a village of about 1,990 households, 704 applications in a year means a lot of builders' vans.
The ground needs more thought than the planners. The British Geological Survey's shrink-swell hazard reaches class 3 in Bricket Wood, the highest class found here, across about 15% of the area. Shrink-swell describes clay that swells when it is wet and shrinks as it dries out, which can move shallow foundations, especially near large trees. For an extension it usually means deeper foundations than a builder would otherwise dig, and in practice building control and a structural engineer will decide the depth. If the house you are looking at is in the class 3 part of the village, get a structural engineer to look at the foundation design and any trees close to the planned footprint while the extension is still a sketch, because changing it later costs real money.
With no conservation area and almost no listed buildings, most houses in Bricket Wood keep their full permitted development rights, which let many rear extensions and loft conversions go ahead within national size limits without a full planning application. Flats don't have those rights, and some estates may have had them removed by earlier planning conditions. Ask St Albans council for a lawful development certificate before work starts, because a builder saying the work is permitted development does not count as proof to anyone.
Bricket Wood leaves homeowners a lot of freedom to extend. Apart from the clay on some streets and the normal national limits, very little stands in the way of a bigger house.