Additions, alterations and new uses in a conserved shophouse need Conservation Permission from the Urban Redevelopment Authority (URA) before any work starts. URA states that this applies to works in a conservation area and is separate from any Building and Construction Authority (BCA) plan submission. Owners who keep the sequence straight, URA first, then BCA, then fire safety where relevant, avoid most of the delays and enforcement exposure that affect conserved properties.
TL;DR
- Conservation Permission from URA is required before additions and alterations or a new use begins in a conserved building. BCA approval does not replace it.
- URA sorts works into three categories. Categories 1 and 2 go through CORENET and must be submitted by a Qualified Person (QP). Category 3 covers minor repair and maintenance works.
- Conserved buildings need a Professional Engineer’s structural report, a method statement and a protection plan, alongside survey drawings and photographs of the existing building.
- A change of use also needs prior approval from the Singapore Civil Defence Force (SCDF).
- Unauthorised works can lead to a fine of up to $500,000, up to 12 months’ imprisonment, or both, plus restoration at the owner’s cost.
Table of Contents
- When Conservation Permission Is Required
- Checking the Building’s Status and Guidelines First
- The Three Categories of Conservation Works
- Documents and Drawings URA Expects
- A Typical Sequence From Brief to Approval
- Other Approvals That Run Alongside URA
- Protecting Original Fabric During Works
- What Happens When Works Start Without Approval
- Common Reasons Applications Stall
- Perspective
- Support for Conservation Submissions
- FAQ
- Sources
When Conservation Permission Is Required
URA’s guidance is direct: conservation works and additions and alterations to a building within a conservation area require Conservation Permission before work starts. The permission is independent of whether the works would also need a BCA plan submission. A small internal change that BCA would treat as minor can therefore still need URA’s consent if it touches conserved fabric or alters the approved use.
The Conservation Guidelines cover planning parameters, restoration, envelope controls, signage and building use. Proposed works must comply with these guidelines and with the Specific Restoration Guidelines for the building. Conservation Permission is also required before the operations of a new use begin, which matters for owners converting a residential unit to a café, office or retail space, or the reverse.
In practice, the following typically trigger a URA conservation application:
- Changes to the front façade, including windows, doors, shutters, timber elements, ornamentation and the five-foot way
- Roof works, including re-roofing and the addition of dormers or skylights
- Rear extensions, new floors, internal reconfiguration and structural opening-up
- Changes to the permitted use of the unit or any part of it
- Signage that affects the building envelope (see the client’s guide to the signage approval submission process)
For a closer look at which features attract the most URA comments, the six shophouse conservation elements that cause URA delays are set out in a separate guide.
Checking the Building’s Status and Guidelines First
Before any design work, the owner should confirm what the building is and what rules attach to it. URA directs owners to its Conservation Portal, where the conservation status, the applicable guidelines and the allowable uses of a shophouse can be checked.
This step prevents two common errors. The first is assuming that a building in a conservation area is treated like any other unit. The second is designing to a use that the guidelines do not allow, which often surfaces only after drawings have been prepared. The same URA circular notes that over 6,500 shophouses and terraces are conserved and that all works to them must comply with the Conservation Guidelines.
Alongside the portal, URA has published updated and new Do-It-Right Guides for conserved buildings. The agency’s stated concern is that uneven industry knowledge has sometimes resulted in unauthorised alterations and irreversible loss of original conserved fabric. Briefing the design team on these guides at the start of a project is a low-cost safeguard.
The Three Categories of Conservation Works
URA categorises conservation works into three types. The category determines who may submit and what must accompany the application.
| Category | Typical scope | Who submits | Route |
|---|---|---|---|
| Category 1 | Major works, such as substantial additions and alterations | Registered Architect as QP | CORENET |
| Category 2 | Works of moderate extent | Registered Architect or Professional Engineer as QP | CORENET |
| Category 3 | Minimal or localised works, repair and maintenance | Owner or contractor | Owner authorisation and repair proposal |
For Categories 1 and 2, the submission is made electronically through CORENET by a QP. A Registered Architect is required for Category 1. For Category 2, either a Registered Architect or a Professional Engineer may submit. For Category 3, the application needs owner authorisation and a repair proposal supported by colour photographs or scaled plans.
The category should be settled at the outset. Under-classifying a job to avoid a QP appointment is a frequent source of rejected applications and re-submissions. The client’s guide to conservation works approval discusses how scope affects rework.
Documents and Drawings URA Expects
For conserved buildings, the supporting documents are more demanding than for ordinary A&A works. According to URA’s submission process, the package should include:
- Measured survey drawings endorsed by a registered surveyor
- A structural report from a Professional Engineer
- Calculation plans
- Photographs of the existing front, rear and side elevations (where there is a side) and the roof
The structural input is not a formality. The Professional Engineer’s report, method statement and protection plan must be prepared and endorsed by the engineer. Many conserved buildings are old shophouses and terrace houses built with traditional materials such as brick, timber and stone, and they share party-wall structures. URA notes that these buildings are sensitive to vibration and ground movement, which is why the protection plan for works on or near them carries weight.
The practical consequence is that the survey and structural assessment should be commissioned early, ahead of the architectural scheme. A design that assumes a wall can be opened or a floor slab inserted may fail once the engineer inspects the actual condition of the brickwork and timber joists. The client’s overview of PE endorsement and authority submissions and its QP submission guide for A&A works describe how the roles are divided.
A Typical Sequence From Brief to Approval
The order below reflects how URA’s process fits with the other authorities. Timelines vary with scope and with the completeness of each submission, so the official pages should be consulted for current processing information.
- Check status and guidelines. Use the Conservation Portal to confirm status, allowable uses and any Specific Restoration Guidelines.
- Appoint the right professionals. A Registered Architect for Category 1, an Architect or Professional Engineer for Category 2, and a Professional Engineer for structural input in either case.
- Survey the building. Obtain endorsed measured survey drawings and a condition record with photographs.
- Prepare the structural report and protection plan. The engineer endorses the report, method statement and protection plan.
- Submit to URA through CORENET. The QP lodges the Category 1 or 2 application. Owners of Category 3 works submit with authorisation and a repair proposal.
- Obtain Conservation Permission. Do not start works on the strength of an expected outcome.
- Submit to BCA. After URA issues Conservation Permission, the architect submits building plans to BCA for clearance and approval. This process is independent of URA’s permission.
- Resolve fire safety. Where the works or use trigger SCDF requirements, plans are submitted through the QP.
- Start works within the approved scope. Any deviation needs to be raised with the QP before it is built.
The mechanics of lodging are covered in the client’s guide on submitting URA renovation plans, and BCA lodgement is explained in the guide to BCA plan submission requirements.
Other Approvals That Run Alongside URA
Conservation Permission is one gate among several. Three others come up most often on shophouse projects.
BCA building plan approval
Building plan approval is obtained from BCA after URA’s permission and does not depend on it. Owners sometimes assume that a URA approval covers structural compliance. It does not. See the guide on what requires BCA submission approval to check whether a given scope falls inside BCA’s net.
SCDF fire safety approval
Shophouses carry specific fire-safety challenges: narrow frontages, deep plans, combustible timber elements and mixed uses. SCDF’s plan approval pages state that minor alterations or additions within Regulation 4(4) may proceed after Minor Alterations and Additions lodgement. Anything beyond that threshold needs plan approval.
For a change of use, SCDF reminds owners and occupiers to seek prior approval, engage a Qualified Person to submit plans, and engage a Registered Inspector to inspect the completed fire safety works. The client has set out the practical consequences in its guides on SCDF requirements for shophouse conservation, when a change of use needs a new fire safety plan and common fire safety non-compliances in heritage shophouses.
Change of use under URA
A new use, such as converting a residential shophouse to commercial premises, is itself a matter for Conservation Permission, in addition to the SCDF step. A change of use checklist helps owners gather the use-specific information before drawings are prepared.
Protecting Original Fabric During Works
The reason URA scrutinises these applications is that conserved fabric, once lost, cannot be restored authentically. Lime plaster, timber windows, decorative tiles and Chinese or Malay-influenced ornamentation are examples of features that are easily destroyed by routine renovation methods. Owners and contractors planning repairs can find general construction guidance on protecting original materials and features of historic buildings, which complements the Singapore-specific requirements in URA’s guides.
The working principle is repair before replacement, and like-for-like where replacement is unavoidable, in line with the Specific Restoration Guidelines that apply to the building. Where works occur at or near party walls, the protection plan should address vibration, propping and monitoring, since adjoining units share structure.
What Happens When Works Start Without Approval
Enforcement is real. In a case published in April 2026, URA announced that an individual and a company were fined $250,000 and $150,000 respectively for unauthorised works to a conserved building. The statutory maximum for offenders is a fine of up to $500,000, imprisonment for up to 12 months, or both. In that case, the owner was also required to restore the building at its own cost.
The same release makes the owner’s position plain: owners of conserved buildings are responsible for making sure that works comply with the relevant regulations and that the required approvals are obtained. Appointing a contractor does not transfer that responsibility. A written scope that requires the contractor to work only within approved plans, and a QP who inspects against them, are the controls most owners put in place.
Common Reasons Applications Stall
The following patterns recur and are avoidable:
- Wrong category. The scope is described as repair when it includes alteration, and URA asks for a QP submission.
- Thin structural input. The engineer’s report is generic and does not address the building’s actual brick, timber or party-wall condition.
- Use not checked. The proposed use is not among the allowable uses for the building under the guidelines.
- Sequence errors. BCA submission begins on the assumption that URA will approve, then the design changes and both must be reworked.
- Incomplete photographs. Existing front, rear, side and roof elevations are missing or unclear.
- Fire safety left late. Change-of-use implications surface after the layout is fixed.
Structural redevelopment questions, such as balancing heritage retention with new loads, are discussed in the client’s article on redeveloping conservation buildings with structural integrity in mind.
Perspective
Our experience of shophouse applications is that the approval itself is rarely the hard part. The hard part is the order in which the evidence is assembled. When the structural assessment is done after the architectural scheme, the scheme usually has to be redrawn.
We therefore recommend that owners treat the Professional Engineer as part of the design team from the first site visit, not as a signatory at the end. Old brick and timber construction, shared party walls and sensitivity to vibration mean that structural reality should shape what is proposed.
Our services cover the elements that a conservation application depends on: structural and geotechnical engineering, architectural design, PE endorsement, and statutory submissions to URA, BCA and SCDF. Handling these under one engagement is designed to reduce the hand-offs where inconsistencies and delays normally arise.
Aman
Support for Conservation Submissions
AEC Technical Advisory supports owners, developers and architectural firms with the engineering and submission work that conservation projects require. This includes PE endorsement, architectural design and authority submissions, structural design checks, temporary works design, and SCDF and BCA submissions.
Owners who have a shophouse project in scoping can review the full list of engineering and submission services or contact the team through the AEC Technical Advisory site to discuss the category, documents and sequence that apply to their building.
FAQ
Do I need URA approval for internal works in a conserved shophouse?
That depends on the scope. URA requires Conservation Permission for additions and alterations to buildings in a conservation area, and for a new use. Works that alter conserved fabric or structure, or change use, fall within that requirement. Owners should check the building’s guidelines on the Conservation Portal and confirm the category with a QP before starting.
Who can submit a conservation application?
Category 1 and 2 applications are submitted through CORENET by a Qualified Person. A Registered Architect is required for Category 1, and a Registered Architect or Professional Engineer may submit Category 2. Category 3 works, being minimal or for repair and maintenance, may be submitted by owners or contractors with authorisation and a repair proposal.
Is BCA approval the same as URA conservation approval?
No. They are separate processes. After URA issues Conservation Permission, the architect submits building plans to BCA for clearance and approval. Having one does not remove the need for the other, and SCDF approval may be required as well.
What are the penalties for unauthorised works?
Offenders may face a fine of up to $500,000, imprisonment of up to 12 months, or both. In a case published by URA in April 2026, the owner was also required to restore the building at the owner’s cost.
Sources
- URA: Submission Process for Additions and Alterations (A&A) and Conservation Works
- URA: Conservation Guidelines
- URA: Updated and new Do-It-Right Guides for conserved buildings
- URA: A&A works to or near conserved buildings and maintenance of conserved buildings
- URA: Individual and company fined for unauthorised works to a conserved building
- SCDF: Plan Approval
- SCDF: Change of use reminder for property owners and occupiers
- Guidance on historic home repairs and original materials