Answer:

spec

Answer	Crossword Clue
SPEC	On ... (with an eye toward selling)
SPEC	.. sheet (builder's instructions)
SPEC	Builder's sample

SPEC	Builder's sample, in short
SPEC	Work-order detail
SPEC	Builder's model
SPEC	Contract requirement, for short
SPEC	Dimension, to a builder
SPEC	Bullet point in a tech document
SPEC	Detail
SPEC	Piece of a design

SPEC	Designer's detail, for short
SPEC	Writers may work on it
SPEC	Work detail?
SPEC	Biz gamble
SPEC	Something to build on?
SPEC	Detail, for short
SPEC	What some homes are built on
SPEC	Blueprint detail

SPEC	Detail, briefly
SPEC	Design detail
SPEC	What a house may be built on
SPEC	On .. (without guarantee)
SPEC	On ... (with no buyer lined up)
SPEC	Provide details for
SPEC	Provide details for, as a job
SPEC	On ... (without a contract)

SPEC	Build on ...
SPEC	Design detail, briefly
SPEC	On ...: without a buyer
SPEC	A writer may work on it
SPEC	Short detail?
SPEC	Build on ..
SPEC	Builder's detail, briefly
SPEC	Job detail, briefly

SPEC	Some homes are built on it
SPEC	Builder's detail, in brief
SPEC	Job particular, briefly
SPEC	Mfr.'s detail
SPEC	Mfr.'s requirement