North Somerset Council says a tree in a conservation area which is not protected by an order and has a trunk diameter of more than 75mm measured at chest height needs six weeks notice before the proposed plans, and it sets out the route: "Visit our Planning Portal website, you can use the same form for both the application and to give notice." For a tree protected by a tree preservation order the same page says you must apply to the council for permission.
On front gardens the Planning Portal says you will not need planning permission if a new or replacement driveway of any size uses permeable or porous surfacing which allows water to drain through, such as gravel, permeable concrete block paving or porous asphalt, or if the rainwater is directed to a lawn or border to drain naturally. The same page says that if the surface to be covered is more than five square metres, planning permission will be needed for laying traditional, impermeable driveways that do not provide for the water to run to a permeable area, and that the permitted development allowances apply to eligible houses, not to flats or maisonettes.
The council's Article 4 Directions page names 11 to 15 Mayfair Avenue, Elm Farm and the Churchmead Estate among its Nailsea documents, and the council says an Article 4 Direction can void permitted development rights for works that usually need no permission, naming driveways among those works. A direction on one estate says nothing about the next street.
We would explain how you check the conservation boundary, any tree preservation order, any Article 4 direction and the proposed work before confirming whether permission or notice is needed.