There is a probably late C17 addition on the E side of the tower, connecting it to, and rising over, the nave roofline.
The S nave windows are C15 in style, much renewed in the C19 and C20.
The C15 S porch is timber framed and has a 4-centred doorway and elaborate, renewed barge boarding externally and a king post roof internally.
The S door is probably late C14.
The N aisle is now largely covered externally by the N vestry added in 1989, but retains a much renewed C15 window towards the E end and another at the W end.
The main structure stands on four posts with curved braces at each stage and curved diagonal principals that meet at a boss carved with a Green Man (recoloured).
The nave W door, visible internally within the tower, is C14.
The C15 N arcade is of 4 bays, but the W bay is much shorter than the others, perhaps as a result of a setting out error.
The arch into the N chapel is C19 in a C14 style.
A C15 bench with poppy heads is preserved at the W end of the nave.
C15 stoup by the S door.
Limewood rood figures by Gwynneth Holt, 1955 in the N aisle.
Some good mid C20 glass installed following damage in WWII, including E window by Reginald Bell of 1948-50, three windows by M C Farrar Bell of 1951-9, and a chancel S lancet by David Wasley, 1986.
Buttsbury is now depopulated, but it was a large parish with many manors and the church there has Anglo-Saxon origins.
The nave is C12 in origin, but earlier foundations were discovered below it during restoration in the late 1940s.
Some work was done on the nave in C14,
in the C15 the church underwent a significant remodelling, with the addition of the N aisle, S porch and W belfry tower.
The tower was extended eastwards in the later C17.
SOURCES RCHME: Essex IV , 155-6 Buildings of England: Essex , 752-3 Hewitt, C, Church Carpentry , 130-1 REASONS FOR DESIGNATION The church of All Saints, Stock, Essex is designated at Grade I for the following principal reasons: * Outstanding C15 timber belfry tower and S porch. * Medieval church with C12 origins, remodelled in the C15 and sympathetically restored in the C19 and C20. * Surviving C15 N aisle roof.