Skip to main content
A Singapore Government Agency Website How to identify
Official website links end with .gov.sg
Government agencies communicate via .gov.sg websites (e.g. go.gov.sg/open). Trusted websites
Secure websites use HTTPS
Look for a lock () or https:// as an added precaution. Share sensitive information only on official, secure websites.

Welcome to our refreshed website!

We've updated the site to make information easier to access and navigate. While some content may have been reorganised, you can browse our updated sections to find what you need.

Urban Redevelopment Authority (URA)

GFA Verification – Submission Guidelines

See the submission guidelines for the GFA Verification e-service.

Last updated 15 June 2026

Calculation Plans shall be drawn using Computer Aided Design (CAD) or Building Information Modelling (BIM) software for your application. Acceptable file formats are .dwg, .dgn, .rvt or .pla.

CAD drawings must comply with the following CAD submission guidelines:

General

  1. Each CAD file contains only one title block.

  2. "Limit" of the drawing in each CAD file matches the boundary of the title block (i.e. no information is included outside the title block).

  3. "Last saved view" of the CAD files covers only the title block and information within it.

  4. "Maximum Extents" view should be shown in the "Last saved view".

  5. No external reference files should be referenced by the CAD files submitted (i.e. The external reference files, if any, should be binded before submission).

  6. No raster images should be attached to the CAD file submitted.

  7. "Draft Work"/Construction lines should not be included in the CAD files submitted.

  8. Hatch pattern in CAD files should be kept to a minimum.

  9. No proprietary fonts should be used.

  10. All layers except layers on area calculation should be set to "on" in the "last saved view".

  11. The same CAD files (with changes incorporated to comply with the requirements) should be used in resubmission (i.e. no shifting of co-ordinates in the re submitted files).

  12. Format of CAD layer as indicated in Singapore CAD layering standards (CP83 part 1) should be used.

  13. No hidden CAD layers should be included in the CAD files.

  14. For “Additions and Alterations” or Amendment proposals, the following colours should be used:

Table 1: Colours to be used for Additions and Alterations or Amendment proposals

Usage

Colour 

 DWG Colour Code

DGN Colour Code 

Proposed /Additional Elements

 Magenta

 6

 5

Existing /Approved Elements

 Cyan

 4

 7

Deleted Elements

 Yellow

 2

 4

File Naming

  1. File Naming convention as indicated in this example [PDF, 15 KB] should be used.

Project Identification

User-defined field. E.g. MLP1 for Merlion Park Project.

Author

Individual /company /organisation responsible for creating the file. E.g. A- for Architect.

Type of Work

  • SP Site Plan (If the submission contains only one CAD file with all details such as site layout and floor layout , then Type of Work should be indicated as SP)

  • FP Floor Plan ( If the CAD file contains floor layout and ‘section and or elevation drawing’ then Type of Work should be indicated as FP )

  • FE Floor plan – elevation view ( If the CAD file contains section and elevation drawing, then Type of Work should be indicated as FE )

  • FX Floor plan – cross section view

  • SX Site cross section view

  • SE Site elevation view

  • SV Survey Plan

  • TP Topo Plan

  • PP Land Profile Plan

  • RD Road Interpretation plan

  • DN Drainage Interpretation plan

  • RW Retaining walls

  • BC Bin Centres

  • SN Substations

  • LS Landscaping

  • LT Lighting Plan

  • OA Other ancillary structure( eg bin centre, Guard house on same CAD File )

Level/View plane

  • 02 2nd storey

  • 12 12 storey, or typical floor from 12 storey and above

  • A- Attic

  • B2 Basement 2

  • E2 Elevation 2

  • M3 Mezzanine 3

  • R- Roof

  • -- Whole project / Site plan

  • BB Section BB

  • NE Northeast elevation plan

  • -A 1st drawing in the submission with multi-levels, multi-View Plane in the
    same CAD file

  • -B 2nd drawing in the submission with multi-levels, multi-View Plane in
    the same CAD file

Zone or Block

  • 01 for block 1, …….- - for all blocks

  • A1 for Zone A1

Version(revision /Submission)

  • A - 1st submission

  • B - 2nd submission

  • C - 3rd submission

Proposal Plan

  1. The following declaration of ownership should be properly done:

Table 2: Declaration of ownership

I/We, (type in name of person e-signing the plan), hereby declare that -
(a) I/we am/are not the owner(s) of the land within the meaning of the term "owner" as defined in Section 2 of the Planning Act (Cap 232, 1998Ed) ; and
(b) I/we have shown this plan to the owner(s) of the land, and have obtained the consent of the said owner(s) to submit this plan to the Competent Authority under the Planning Act (Cap 232, 1998Ed).

  1. Cadastral based site plan with a surrounding radius range of 10m to 50m is incorporated in the proposal plans. (Note: If this is not possible, applicant is to provide a cadastral key plan as an insert onto the proposal plans or submit the cadastral key plan separately as a scanned image).

  2. Relevant information required should be indicated according to layers as listed below

Table 3: Information to be included in the plans

S/No

Element name 

Description of elements 

 DWG Colour Code

 DGN Colour Code


 Main

 Sub




 1

ENDOURA-

Plan endorsement

 7

 0

 2

 ANOTTBLK

Title block, Scales, Drawing boundary
Legend text
Company Logo

 7 or any other colour

 0 or any other colour

 3

 LNSPBUFF

Green buffer line with dimension , physical buffer line with dimension

 94

 130

 4

 LNSPVERG

Planting verge with dimension

 94

 130

 5

 RETW----

Retaining walls with dimension

 1

 3

 6

 ROAD----

Roadways, Road category text
Road Name text
Road centre lines
Kerbs

 14

 131

 7

 ROADWIDL

Road widening lines, Plot Numbers for Road reserve

 14

 131

 8

 SDRNRESV

Drainage reserve lines, Plot Numbers for Drainage reserve

 5

 1

 9

 SITE----

Site, external works, earth work

 7

 0

 10

 SITEBNRY

Site boundary

 1

 3

 11

 CADI----

Cadastral information, Lot Number, Lot Boundary

 7

 0

 12

 SITEKPLN

Key plan

 7

 0

 13

 SITENRTH

North point

 7

 0

 14

 SITESTBK

Building setback dimensions

 1

 3

 15

 SITEWALL

Boundary wall, site fencing

 174

 129

 16

 SITEBLDG

Building Outline

 4

 7

 17

 SITEBASE

Basement Outline

 214

 133

 18

 TOPOPLVL

Platform level

 7

 0

 19

 SPACBLDG

Building plot boundaries, building plot numbers

 14

 131

 20

 SPACCOSS

Plot boundaries and plot numbers for communal use/open space

 94

 130

 21

 SPAC----

Plot boundaries and plot numbers for right of way/easement, parkway reserve

 7

 0

  1. Site boundary should be indicated in the CAD layer with element name SITEBNRY

  2. All building setbacks should be indicated in the CAD layer with element name SITESTBK

  3. All building plots, and area for communal use/open space should be shown as separate plots in the CAD layer with element name SPACBLDG and SPACCOSS respectively.

  4. Parcels of land for vesting such as road widening and drainage reserve, etc. should be shown as separate plots in the CAD layer with element name ROADWIDL and SDRNRESV respectively.

  5. Existing ground levels for the subject site and adjoining sites immediately across the common boundaries and proposed platform levels should be indicated in the CAD layer with element name TOPOPLVL. Singapore Height Datum (SHD) should be used when indicating the relevant levels.

  6. Retaining walls if any, should be indicated in the CAD layer with element name RETW-- --.

  7. Boundary walls if any, should be indicated in the CAD layer with element name SITEWALL.

  8. Buffer zone provisions should be indicated in the CAD layer with element name LNSPBUFF.

  9. 2m wide planting strip along the boundary should be indicated in the CAD layer with element name LNSPVERG.

  10. Access arrangement should be indicated in the CAD layer with element name ROAD-- --.

  11. Road categories should be indicated in the CAD layer with element name ROAD- -- -.

Sketch (Floor, Section & Elevation) Plan

  1. The following declaration of ownership should be properly done:

Table 4: Declaration of ownership

I/We, (name of person e-signing the plan), hereby declare that -
(a) I/we am/are not the owner(s) of the land within the meaning of the term "owner" as defined in Section 2 of the Planning Act (Cap 232, 1998Ed) ; and
(b) I/we have shown this plan to the owner(s) of the land, and have obtained the consent of the said owner(s) to submit this plan to the Competent Authority under the Planning Act (Cap 232, 1998Ed).

  1. Relevant information required should be indicated according to layers as listed below

Table 5: Information to be included in the plans

S/No

Element name 

Description of elements 

 DWG Colour Code

DGN Colour Code 


 Main

 Sub




 1

 ENDOURA-

Plan endorsement

 7

 0

 2

 ANOTTBLK

Title block, Scales, Drawing boundary
Legend text
Company Logo

 7 or any other colour

 0 or any other colour

 3

FLORLEVL

Floor level

 7

 0

 4

RETW----

Retaining walls with dimension

 1

 3

 5

SITENRTH

North point

 7

 0

 6

SITEWALL

Boundary wall, site fencing

 174

 129

 7

TOPOPLVL

Platform level

 7

 0

 8

BEAM----

Beams

 7

 7

 9 

COLN----

Column

 7

 7

 10

CPRK----

Car Parking lots

 214

 7

 11

DOOR----

Door

 7

 7

 12

FLOR----

Floor

 7

 7

 13

GRID----

Grids

 4

 7

 14

LIFT----

Lifts

 7

 7

 15

STRC----

Staircases

 7

 7

 16

WALL----

Walls

 1

 7

 17

WIND----

Windows

 7

 7

  1. Floor to floor heights should be indicated on section and elevation plans and in the CAD layer with element name FLORLEVL.

  2. Basement protrusions, if any, should be indicated on section and elevation plans and in the CAD layer with element name FLORLEVL.

  3. Lines of existing ground level should be indicated on section and elevation plans and in the CAD layer with element name TOPOPLVL.

  4. Maximum building height in m SHD should be indicated on section and elevation plans and in the CAD layer with element name FLORLEVL.

  5. Retaining walls, if any, should be shown on the section/elevation plans and in the CAD layer with element name RETW--- -.

  6. Boundary walls, if any, should be shown on the section/elevation plans and in the CAD layer with element name SITEWALL.

Calculation Plan

  1. All polygons demarcate area for calculation should be drawn using lightweight polylines for dwg files and complex shape (or shapes) for dgn files. All area included in GFA calculation should be demarcated and all polygons should be “closed”. All parcellations of area should be presented by floors and not by individual units.

  2. Labels represent each area demarcated and tabulation of area calculations should be indicated on top right hand corner of the plan.

  3. Area included in layer ”AREAGFAD” (i.e red polygons) should be within the area in the layer “AREAGFAA” (i.e green polygons).

  4. Service Ducts without floor slabs and voids should be indicated clearly with crosses.

  5. Details calculations on quantum use and secondary use (if applicable) should be incorporated.

  6. Detailed calculations on area of balconies to be computed over and above the Master Plan allowable gross plot ratio (if applicable) should be incorporated.

  7. Detailed calculations on area of outdoor refreshment area to be computed over and above the Master Plan allowable gross plot ratio (if applicable) should be incorporated.

  8. A summary of GFA breakdown by floors (see example below )should be incorporated in the site plan.

Table 6: Summary of GFA breakdown

SUMARRY OF GROSS FLOOR AREA

 Blk No

 Storey

GFA (m2) 

 Breakdown of Gross Floor Area (m2)




 Commercial

Residential 

Hotel 

 Industry

 Warehouse

 1

 Basement








 1st








 2nd








 Roof








 Subtotal







 2

 1st








 2nd








 3rd








 Roof








 Subtotal







 Total







 Quantum(%)







  1. Layers with the following element name should be included in the floor plans for GFA calculations:

Table 7: Layers to be included in the plans

S/No

Element name

Description of elements 

DWG Colour Code 

DGN Colour Code 


Main

Sub




 1

AREAGFAA

Area to be included in GFA calculation

 3

 2

 2

AREAGFAD

Area included in layer AREAGFAA but to be excluded from GFA calculation

 1

 3

 3

AREAGFAB

Area of balconies to be computed over and above the Master Plan (MP) allowable gross plot ratio (GPR)s

 94

 130

 4

AREAGFAR

Area of outdoor refreshment area to be computed over and above the Master Plan allowable gross plot ratio

 94

 130

 5

AREAGFAR

Area to be to be excluded from outdoor refreshment area as in item 4 above

 6

 5

 6

AREAGFAQ

Area to be included in the 60% (minimum) hotel room & hotel related use quantum

 4

 7

 7

AREAGFAQ

Area to be included in the 60% (minimum) industrial use quantum

 4

 7

 8

AREAGFAQ

Area to be computed under the 50% (minimum) prayer quantum

 4

 7

 9

AREAGFAQ

Area to be included in the Business Park White (15%)

 4

 7

 10

AREAGFAQ

Area to be to be excluded from Industrial use quantum, prayer quantum or Business Park white quantum calculation

 6

 5

 11

AREAGFAS

Area to be computed as secondary use in an industrial development

 4

 7

 12

AREAGFAS

Area to be computed as commercial use in a mixed use development

 4

 7

 13

AREAGFAS

Area to be to be excluded from secondary use calculation in an industrial development or commercial use calculation in a mixed use development

 6

 5

  1. Layers with the following element name should be included in the site plans for calculation of Communal Open Space and Building Coverage:

Table 8: Layers to be included for communal open space and building coverage

S/No

Element name

Description of elements

DWG Colour Code

DGN Colour Code


Main

Sub




 1

AREABDBA

Building block area

 6

 5

 2

AREABDBD

Area to be deducted from building coverage

 2

 4

 3

AREACOSA

Communal open space area

 4

 7

 4

AREACOSD

Area to be deducted from communal open space

 2

 4