The HDB renovation guidelines that bind a job are short, and a breach risks a fine of up to S$5,000: only a registered firm may do the work, hacking needs written approval, structural elements may never be removed, two classes of work get two different hour windows, and the permit expires.
Who may carry out the work
Only a firm listed on the Directory of Renovation Contractors may renovate an HDB flat. That rule comes before every other rule on this page.
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01 PERMIT
Hacking always
needs oneAll demolition and hacking of walls, partial or complete, needs HDB’s prior written approval before anything starts.
hdb.gov.sg · read 2026-08-31
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02 HOURS
Mon to Fri
9am to 5pmRestricted works only. General works such as painting and screed run Monday to Saturday until 6pm.
hdb.gov.sg · read 2026-08-31
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03 DEADLINE
3 months for
a new blockFrom the date the permit is granted. Existing blocks get 1 month.
hdb.gov.sg · read 2026-08-31
Check the register yourself rather than accepting a claim. The Housing & Development Board publishes it, and it is the only list that counts.
What needs written approval before it starts
Anything structural, anything wet, and anything that changes the external appearance of the flat. All demolition and hacking sits inside that description.
All demolition and hacking needs prior written approval
Partial or complete, structural or not. The HDB renovation permit is filed by your contractor, and nothing regulated may start before it is granted.
What may never be removed
Structural walls, beams and columns. There is no approval route for these, and no engineer letter that creates one.
Structural walls, beams and columns may never be removed
Get every wall classified from the floor plan before a design is agreed. A layout that depends on removing a structural wall is not a layout.
Permitted working hours: general works versus restricted works
Two classes of work, two different windows. This is the guideline most often stated wrongly, including by the AI answer served for this cluster.
Permitted renovation hours, as HDB publishes them
Sources MyNiceHome by HDB 2026-08-31
General renovation works run Monday to Saturday, 9am to 6pm. Restricted renovation works run Monday to Friday, 9am to 5pm.
- Neither class runs on a Sunday.
- Neither class runs on a public holiday.
- Restricted works also lose the Saturday.
The five festival eves restricted works are banned on
On top of the weekly pattern, restricted works are banned on five named festival eves.
Restricted works are banned on five named festival eves
The eves of New Year, Chinese New Year, Deepavali, Hari Raya Puasa and Christmas Day. No competitor page in the crawled top 10 states this.
Does HDB allow early renovation
Not before the permit is granted, and not before key collection. Those are two separate gates and both have to be passed.
What can happen early is everything that is not work: the design, the site measure booking, the contractor appointment and the permit application itself.
- Utilities account opened before anybody starts.
- Contractor appointed, because only a firm may file.
- Floor plan submitted where hacking is proposed.
Get a free quote
Tell us the flat type and when you collect keys. You get a scope discussion and an indicative cost band within one working day.
or email hello@btorenovation.sg
Can I extend my toilet in HDB
Generally not. The bathroom footprint is tied to the waterproofing and the drainage below it, and both are shared building elements.
Bathroom floor finishes in a new flat carry a three-year restriction
Overlay is normally the route within the restriction. Extending the footprint is a different question again, and the answer is usually no because the waterproofing membrane does not extend with it.
The permit window
Approved works must finish inside a fixed window, counted from the grant date rather than the day the first crew arrives.
How the window is counted
- Granted The clock starts on the grant date, not the day work begins.
- Three months For a newly completed block, and that is the whole allowance.
- One month For an existing block, which is why resale programmes feel tight.
Plan the programme backwards from expiry. It is the only version of a schedule that has to be true, and it is what an honest renovation contractor will do anyway.
Neighbour notice and the displayed notice
Two separate obligations that people collapse into one. A written notice to neighbours, and a Notice of Renovation displayed at the flat.
Written notice at least five days before works begin
Within a radius of two units. The Notice of Renovation stays displayed outside the flat for the whole duration of the works.
The penalty, and who it binds
Contravening the Housing and Development (Renovation Control) Rules 2006 carries a fine of up to S$5,000 on conviction, plus other penalties.
The penalty attaches to the flat owner as well as the contractor
This is the clause most homeowners miss. Engaging a firm outside the Directory of Renovation Contractors is an exposure you carry personally, whatever your contract says.
Electrical and plumbing rules
Electrical work must be done by a worker holding an Energy Market Authority licence. Plumbing that touches shared drainage is similarly restricted.
Electrical work requires a worker holding an EMA licence
Ask which worker will do it and under which licence, not merely whether the firm can arrange it. The two answers are different.
HDB renovation guidelines: rules, restrictions and policy in one place
The hdb renovation rules people search for go by half a dozen names. Hdb renovation regulations, hdb reno guidelines, hdb renovation policy and hdb flat renovation rules all point at the same set of published pages.
The hdb rules for renovation split cleanly into two lists. Hdb renovation permitted works are everything a permit can cover, and hdb renovation prohibited works are everything no permit will ever cover.
- Hdb hacking rules sit in the first list, with conditions attached.
- Structural removal sits in the second, with no route at all.
- Everything else is a question about hours and sequence.
An hdb renovation checklist worth keeping is short. The hdb renovation requirements are the register, the permit and the hours; the hdb renovation conditions are the dates on the permit; and hdb renovation compliance is simply doing both on time.
- Hdb renovation guidelines Singapore publishes are the ones linked above.
- Hdb renovation restrictions are the subset that say no outright.
- Hdb renovation approval rules are the subset that say not yet.
The renovation guidelines hdb maintains can change without announcement, so an hdb renovation guideline 2026 summary written by anybody other than the board is a snapshot rather than a rule.
The short version of the hdb renovation dos and donts is this: do check the register, do get the permit, do keep to the hours. Do not hack anything structural, and do not start early.
Get a free quote
Tell us the flat type and when you collect keys. You get a scope discussion and an indicative cost band within one working day.
or email hello@btorenovation.sg
How to check any rule yourself
Every rule on this page links to the HDB page it came from. Open the source rather than trusting a summary, including ours.
Does this work need an HDB permit?
Sources HDB 2026-08-31HDB building works 2026-08-31
- Start at the HDB renovation guidelines pages, not a forum.
- Check the date on whatever you are reading.
- Where a guide and HDB disagree, HDB wins.
Most disputes about HDB renovation guidelines are really disputes about which page somebody read, and how long ago they read it.
How every figure on this page is sourced and dated
Every rule above links to the Housing & Development Board page it came from, with the date it was read. Nothing here is written from memory.
Where a published answer conflicts with the HDB source graphic, the graphic wins and the page says so. The same method runs across every guide on this site.
What we do not claim
No licence number, no accreditation, no review, no rating and no photograph captioned as our own completed project. None of those exists for this site.
Every image here is a generated illustration and says so. These are checks to run on any contractor, including us.
- No completed project is shown, because none is ours to show.
- No renovation loan is arranged or brokered here.
- BTO Renovation SG works across Singapore and publishes no reviews.
What happens after you send the form
Tell us which BTO project, which flat type and when you collect keys. We reply within one working day with a scope discussion and an indicative cost band.
- Which block, so the works window can be dated.
- Whether you kept the Optional Component Scheme flooring.
- Whether hacking is in scope, because it sets the hours.
Bring the renovation quotation you already hold if you have one. An itemised quote tells us more in a minute than a description does in ten.
Questions people ask
Who is allowed to renovate an HDB flat?
What are the permitted renovation working hours?
Are there days when noisy work is banned outright?
How long do I have once the permit is granted?
What is the penalty for breaking the renovation rules?
Can a structural wall be removed?
What notice do my neighbours get?
How do I check any of this myself?
What does this cost in practice?
Do you publish package prices?
What are the permitted renovation hours for HDB?
Can I complain about renovation noise?
Can I extend my toilet in HDB?
Can I hack a structural wall in an HDB flat?
Sources
Every rule above, with the page it came from and the date it was read.