The following is a list of abbreviations that are commonly found on a set of house plans.

A

• ABV. - Above
• A.B. - Anchor Bolt
• A/C - Air Conditioner
• A.D. - Access Door
• ADD. - Addition
• ADJ. - Adjust
• A.F.F. - Above Finished Floor
• A.F.G. - Above Finished Grade
• A.G. - Above Grade
• ALT. - Alternate
• APP'D. - Approved
• ARCH. - Architect,
• Architectural
• ASPH. - Asphalt

B

• B.C. - Bookcase
• BD. - Board
• B.L. - Building Line
• BLDG. - Building
• BLK. - Block
• BM. - Beam
• B.N. - Boundary nailing
• B.O. - Bottom of
• B.O.F. - Bottom of footing
• B.O.W. - Bottom of wall
• BRG. - Bearing
• B.U. - Built up
• BTM. - Bottom

C

• CSMNT. - Casement
• CABT. - Cabinet
• C.B. - Catch Basin
• C.D. - Construction document
• CEM. - Cement
• C.F.M. - Cubic Feet per Minute
• C.L. - Center Line
• CH. - Channel
• C.I. - Cast Iron
• C.I.P. - Cast in Place
• CL. - Closet
• CLG. - Ceiling
• C.O. - Clean Out
• C.O. - Cased Opening
• COL. - Column
• CONT. - Continuous
• CONTR. - Contractor
• CONC. - Concrete
• C.T. - Ceramic Tile

D

• D.S. - Down spout
• D/W - Dishwasher
• DBL. - Double
• DEMO. - Demolition
• DIA. - Diameter
• DIM. - Dimension
• D.L. - Dead Load
• DN. - Down
• DR. - Door

E

• EA. - Each
• E.F. - Exhaust fan
• E.J. - Expansion joint
• E.N. - End nailing
• ELEV. - Elevation
• ELECT. - Electric, electrical
• EQ. - Equal
• EQUIP. - Equipment
• EST. - Estimate
• E.W. - Each way
• EXH. - Exhaust
• EXIST. - Existing
• EXT. - Exterior

F

• F.A. - Fire alarm
• F.C.O. - Floor clean out
• F.D. - Floor drain
• F.E. - Fire extinguisher
• F.N. - Field nailing
• FAB. - Fabricate
• FDN. - Foundation
• FIN. - Finish
• FLR. - Floor
• FLG. - Flooring
• FLUOR. - Fluorescent
• FURN. - Furnace

G

• GA. - Gauge
• GALV. - Galvanized
• GAR. - Garage
• G.C. - General Contractor
• G.F.C.I. - Ground Fault Circuit Interrupt
• G.F.I. - Ground Fault Interrupt
• GL. - Glass
• G.M. - Grade mark
• GR. - Grille
• G.T. - Glazed tile
• GYP. - Gypsum

H

• H.B. - Hose bib
• H.C. - Hollow core
• HDBD. - Hardboard
• HDW. - Hardware
• HGT. - Height
• HOR. - Horizontal
• HR. - Hour
• H.R. - Handrail
• HTR. - Heater
• H.V.A.C. - Heating, Venting and Air Conditioning
• H.W. - Hot water

I

• I.C.F. - Insulated Concrete Form 
• I.D. - Inside diameter
• I.F. - Inside Face
• INCL. - Inclusive, including
• INV. - Invert
• INSUL. - Insulation
• INT. - Interior

J

• J-Box - Junction box
• JCT. - Junction
• JST. - Joist

K

• K.-D. - Knock Down
• K.D. - Kiln dried
• K.O. - Knock out

L

• LFT. - Linear feet
• LAM. - Laminate
• LAT. - Lateral
• LAV. - Lavatory
• LD. - Lead
• LIN. - Linear
• LINO. - Linoleum
• LT. - Light
• LTG. - Lighting
• L.V.L. - Laminated Veneer Lumber

M

• M.B. - Machine bolt
• M.O. - Masonry opening
• MAR. - Marble
• MAS. - Masonry
• MTL. - Material
• MAX. - Maximum
• MECH. - Mechanical
• MED. - Medium
• MFG. - Manufacturing
• MIN. - Minimum
• MOD. - Modular
• MTL. - Metal (steel)
• MUL. - Mullion

N

• N.T.S. - Not to scale
• N.C.M. - Non-corrosive metal
• N.F.C. - Not for construction
• NLR. - Nailer
• NO. - Number
• NOM. - Nominal

O

• O.C. - On center
• O.D. - Outside diameter
• O.R. - Outside radius
• O.H. - Overhead
• OPNG. - Opening

P

• P. - Paint
• PART. - Partition
• PAV. - Pavement
• P.C. - Pre-Cast Concrete
• PERF. - Perforated
• PL. - Plaster
• PLT. - Plate
• P.L. - Property line
• PLAS. - Plastic
• P.L.V. - Plastic laminate veneer
• PLYWD. - Plywood
• PORC. - Porcelain
• P.S.F. - Pounds per square foot
• P.S.I. - Pounds per square inch
• P.V.C. - Polyvinyl chloride
• PWR. - Power

Q

• Q.T. - Quarry tile
• QTY. - Quantity

R

• RAD. - Radius
• R.D. - Roof drain
• R.D.L. - Roof drain leader
• R.O. - Rough Opening
• R.O.W. - Right of way
• REFG. - Refrigerator
• REF. - Reference
• REINF. - Reinforced
• RET. - Return
• REV. - Revision
• RM. - Room
• RMV. - Remove

S

• SAN. - Sanitary
• S.C. - Solid core
• S.C. - Self-Closing
• SCHED. - Schedule
• S.D. - Smoke detector
• SECT. - Section
• SHT. - Sheet
• SHT'G. - Sheathing
• SIM. - Similar
• SPECS. - Specifications
• SQ.FT. - Square feet
• SQ. IN. - Square inches
• STD. - Standard
• STL. - Steel
• S.Y. - Square yard
• SYS. - System

T

• T&G - Tongue and groove
• T.B. - Through bolt
• T.O. - Top of
• T.O.B. - Top of Beam
• T.O.C. - Top of curb
• T.O.F. - Top of footing
• T.O.J. - Top of joist
• T.O.M. - Top of masonry
• T.O.W. - Top of wall
• T.S. - Tube steel
• TH. - Threshold
• THR. - Threaded
• TYP. - Typical

U

• UNF. - Unfinished

V

• V.B. - Vapor barrier
• V.I.F. - Verify in field
• VA. - Voltage
• VCT. - Vinyl composition tile

W

• W.C. - Toilet (water closet)
• WDW. - Window
• WCT. - Wainscot
• WP. - Weatherproof
• WT. - Weight
• WTR. HTR. - Water Heater
• WD. - Wood
• W.I. - Wrought Iron
• W.I.C. - Walk In Closet

Y

• YD. - Yard