The parish of Forncett St Peter, the more southerly of the two Forncetts, lies in central southern Norfolk about 10 miles south of the city of Norwich. Forncett St Peter is about 2 miles west of the A140 road which links Norwich to Ipswich and is accessed from that road by lanes leading west from Long Stratton. Forncett St peter is essentially a linear village built largely along a north/south running lane which runs just off the flood plain of the River Tas which lies to the east of the village. The area is intensely arable, the village sits in its shallow valley but all around is a plateau covered in large arable fields growing, grain, oil seed or sugar beet.

St Peter's church sits to the east of the above-mentioned lane accessed by a short gated driveway. The round tower usually indicative of an early church does not mislead in this case, the tower is the oldest part of St Peter and is Norman, the remainder dates from the later 14th century of the early Perpendicular era, the major church building era in Norfolk. With its tall nave & chancel and rather shortened arcades the church appears rather irregularly sized with hidden flat roofed spaces. The building sits in an attractive churchyard which runs up to the main village lane alongside the driveway.