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Urban Redevelopment Authority (URA)

Form DC 7

Lodgment for additions & alterations to existing detached / linked / semi-detached / terrace house.

Last updated 13 July 2026

Explanatory Notes to Lodgement for Additions and Alterations to an Existing Landed House

1. Lodgement form

Lodgement of forms relating to Additions and Alterations to existing detached/linked/semi-detached/terrace house must be made on prescribed forms prior to the submission of any application to the Building Authority for approval of the building plans.

2. Requirements

The proposal must satisfy the following criteria:

Criteria

a)

The proposal is on land zoned "residential" in the Master Plan;

b)

The proposal is located within the designated landed housing estates, but excluding Conservation and Good Class Bungalow Areas. Refer to the designated landed estates here [PDF, 13.5 MB] (opens in new tab);

c)

Comply with all relevant planning guidelines and standards of the Competent Authority, including those on building setback, site coverage, housing type, building height, etc.;

d)

No part of the existing landed dwelling house comprises works that are unauthorised under the Act;

e)

The proposal is not affected by any road / drainage proposals and the plot abuts a public road;

f)

No part of the plot consists of State land;

g)

The operation will result in a landed dwelling house of the same housing type as the existing landed dwelling house;

h)

No more than one landed dwelling house would exist on the plot when the operations are completed;

i)

Any proposed earthfill must not result in any point in the plot to be raised more than 1m and must also not be more than 1m higher than any point along the abutting edge of the adjacent land;

j)

Compliance with Envelope Control (EC) guidelines with no more than one full mezzanine floor within the permissible EC;             

k)

Comply with the requirements of all other relevant authorities (including LTA);

l)

Proposed additional gross floor area (GFA) does not exceed 50% of the existing GFA;

m)

Less than 50% of the existing external walls of the existing buildings are to be removed and / or replaced with new walls (excluding replacement of doors and windows);

n)

Structural changes to existing floor area such as replacing or constructing new columns/beams and reconstructing existing floor slabs are not more than 50% of the existing.

o)

No structures or other uses are proposed on the rooftop (for houses which have reached the permissible EC building height)

p)

For any proposal on a newly subdivided lot (from 7 May 2007), the works does not result in an increase in GFA by more than 20 sqm within the first 3 three years from the date of TOP.

3. Plans to be submitted

[These plans must be submitted through Electronic Development Application (EDA)]

Table caption

a.

Proposal Plan

  • The Proposal Plan must be a true cadastral and topographical representation of all lands in the application with the nature and extent of all works proposed clearly indicated.

  • It should be drawn to scale as appropriate.

  • The Proposal Plan must be endorsed by the Qualified Person and the consent of the owner/s of the land by a letter of consent.

b.

Sketch Plan

  • The sketch plan shall show the floor plan, cross-section, existing and proposed platform level and elevations of the building with full dimensions and boundary clearances. All plans must be endorsed by the Qualified Person and the consent owner/s of the land must be obtained by a letter of consent.

  • To facilitate the submission of addition and alteration applications, we will accept lodgements showing the additions and alterations of the affected areas only. With the exception of cases that require the recomputation of gross floor area, no other details are required for the remaining development except for the building outline only (please see example provided in Guidelines For Submission of CAD Files To URA [PDF, 350 KB] (opens in new tab).)

c.

Site Coverage Calculation Plan (for Detached or Linked House ONLY)

The Calculation Plan shall include the existing building and the proposed extension, with the detailed computation form as part of a layer in the sketch plan.

4. Compliance with technical requirements

The Qualified Person is to seek and comply with the technical requirements of all front-line technical departments e.g. LTA, etc. at the Building Plan submission stage.

5. Fee

Please refer to the Fee Schedule [PDF, 451 KB] (opens in new tab).

6. Owner

"Owner" in relation to land or premises is defined in the Planning Act (Cap 232, 1998 Ed) as the person for the time being receiving the rent of the land or premises whether on his own account or as trustee for any other person or as receiver (not being appointed by or on behalf of a mortgagee) or the person who would receive the rent if the land or premises were let to a tenant and includes:

  • a mortgagee in possession; and

  • the purchaser of any newly constructed premises or part thereof in respect of which a temporary occupation permit or a certificate of statutory completion has been granted.

7. Planning (Development of land - Lodgement authorisation) notification

You are required to comply with the provisions of the above stated subsidiary legislation.

8. Validity

The development works is authorised for two years with effect from the date of the acknowledgment letter. If the development is not completed within two years, you are to apply for an extension (two years per extension) for the authorisation.

Annex A to Form DC 7

ROAD BUFFER AND BUILDING SETBACK REQUIREMENT FOR LANDED HOUSING DEVELOPMENT

Road Category

Road Buffer1
(min.)

Green Buffer2
(min.)

Category 1

24m

5m green

Category 2

12m

5m green

Category 3/4/5

7.5m

3m green

Note

1.

For landed house with side/rear fronting a Category 5 road, the buffer standard is the same as the minimum boundary clearance requirements. There is no need to provide any green buffer, whether the front/side/rear of the house faces a Category 5 road.

2.

  • The green buffer is the segment within the road buffer that is meant for tree planting and turfing only. Car porch/terrace including roof eaves at 1st storey fronting a category 1-2 road are not to encroach into the green buffer. The length of the car porch should also not exceed the length of a standard car park lot.

  • For landed housing (2 or 3-storey) that faces a Category 3-5 road, the proposed car porches can be set back 2.4m from the front boundary line.