Neighbour & Boundary Disputes
Extending a landed house: the approval most owners skip
Extending a landed house without local authority approval violates s.70(1) of Act 133. An unapproved extension does not stay secret—it surfaces at the next bank valuation, mortgage inspection, and sale transaction, exposing the owner to statutory demolition orders.
Quick summary
Quick answer
Best for
Risk level
Buyer action
| Best for | Owners of landed property with a boundary or neighbour problem |
|---|---|
| Risk level | High |
| Buyer action | Send Lewis the property, photographs of the problem with their dates, and what you have already put in writing, and he will tell you what to do next. |
Start from the plan and the title
This post works through an unapproved extension follows the house to the next buyer, the next valuation and the next loan Two documents decide most landed neighbour disputes: the land search, which shows the registered boundary, and the approved building plan held by the local authority. Neither is expensive to obtain.
The statutory prohibition against building without approval under s.70(1)
Section 70(1) of the Street, Drainage and Building Act 1974 (Act 133) provides an unambiguous statutory command: 'No person shall erect any building without the prior written permission of the local authority.' Under the act, the legal definition of erecting a building includes structural additions, kitchen extensions into backyards, adding car porch covers, or creating enclosed living space on previously open land. Property owners frequently believe that because they own the freehold or leasehold title to the landed lot, they enjoy absolute freedom to construct up to their boundary fences. That belief is incorrect. Land ownership gives private title to the parcel, but all physical construction is subordinated to municipal building control under Act 133.
State-adopted by-laws and the reality of local authority planning variations
A critical rule of Malaysian planning law is that the Uniform Building By-Laws are state-adopted subsidiary legislation. Parliament enacted Act 133 as the parent statute, but each individual state government (such as Selangor, Johor, Perak, or Penang) adopts and gazettes its own version of the building by-laws. Consequently, boundary setback minimums, allowable site coverage ratios, natural ventilation percentages, and awning projection limits differ between states and between individual municipal councils like DBKL, MBPJ, or MBJB. There is no national setback figure that permits an owner to build within a fixed number of feet from the back fence. Homeowners must consult the specific planning guidelines enforced by their own local authority rather than relying on construction rumours.
The formal submission route under s.70(2) versus contractor promises
Under section 70(2) of Act 133, anyone intending to erect or extend a building must have plans and specifications prepared and submitted to the local authority by a principal submitting person (a registered architect) or submitting person (a registered professional engineer). Contractors routinely tell landed house owners that 'everyone extends without permits' or promise that they will 'settle the council.' In law, a contractor cannot submit building plans unless they are qualified professionals, and verbal promises provide zero legal protection. When municipal enforcement officers conduct site inspections, statutory notices under Act 133 are served directly upon the registered owner of the property, not the contractor who poured the concrete.
How unapproved extensions poison future sales, valuations, and bank loans
The real trap of an unapproved extension is that it cannot remain hidden when you decide to sell the property. When a purchaser applies for a commercial housing loan, the lending bank instructs a licensed professional valuer to conduct a thorough site inspection. Valuers cross-reference the built structure against the approved building floor plan on file. If an unapproved kitchen extension or double-storey addition is uncovered, the bank will refuse to attribute collateral value to the unapproved footprint. If the extension breaches municipal setbacks, banks frequently decline the loan entirely. The buyer's conveyance lawyer will demand copies of council-approved plans and the Certificate of Completion and Compliance (CCC), causing the sale transaction to collapse.
Statutory penalties under s.70(11), s.70(13), and the 5x to 20x regularisation trap under s.70(14)
The financial and legal consequences of unauthorised building works under Act 133 are severe. Under s.70(11), unauthorised alterations to an existing building carry a fine on conviction not exceeding RM25,000 (confirm the current amount with your local authority), and a Magistrate's Court shall issue a mandatory order to alter or demolish the building. Under s.70(13), erecting a building without permission carries a fine not exceeding RM50,000 or imprisonment up to three years or both, plus a daily fine of RM1,000 for every day the offence continues after conviction (confirm the current amount with your local authority), alongside a mandatory court demolition order under s.70(15). If an owner attempts retrospective regularisation before proceedings begin, s.70(14) mandates payment of not less than five times but not exceeding twenty times the prescribed submission fee. Retrospective approval is only possible if the completed structure strictly satisfies state-adopted by-laws; if setback clearances are breached, demolition is unavoidable.
Check this against your own case
Start from the title and the approved plans, not from the argument. A land search shows the boundary as registered; the local authority holds the approved building plan. Most neighbour disputes on landed property are settled by those two documents, and the ones that are not need a lawyer rather than a louder conversation.
Buyer checklist
Under section 70(1) of the Street, Drainage and Building Act 1974 (Act 133), no person shall erect any building without prior written permission from the local authority. Expanding your kitchen footprint, building an enclosed terrace, or extending a car porch legally constitutes erecting a building. There is no national exemption list; technical rules sit in the state-adopted Uniform Building By-Laws and vary by municipal council. Crucially, unapproved extensions follow the property permanently. When you eventually sell or refinance, the purchaser's bank sends a panel valuer who cross-references the physical layout against the council-approved building plans. If unapproved extensions are detected, the bank excludes the unapproved square footage from its valuation, reduces the loan quantum, or cancels the financing facility entirely. Regularising the structure afterwards under s.70(14) incurs statutory penalty fees between five and twenty times the prescribed submission rate, provided the works comply with state setback rules; if setbacks are violated, the local council can order mandatory demolition.
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| 1 | Check boundary setback and site coverage limits directly with your local authority building control department. |
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| 2 | Engage a registered professional architect or engineer to submit plans under s.70(2) before commencing extensions. |
| 3 | Ensure proposed extensions comply fully with the Uniform Building By-Laws as adopted by your specific state. |
| 4 | Never accept verbal assurances from building contractors that municipal extension permits can be bypassed safely. |
| 5 | Confirm current penalty amounts under s.70(11) and s.70(13) with your local council to avoid severe statutory fines. |
Common questions
Does extending a landed house kitchen to the back boundary wall require council approval in Malaysia?
Yes. Expanding the building footprint is legally classified as erecting a building under s.70(1) of Act 133. It requires plans submitted by a registered architect or engineer under s.70(2) complying with setback rules in your state-adopted building by-laws.
What happens if a bank valuer discovers an unapproved extension when I try to sell my house?
The valuer excludes the unapproved square footage from the valuation report, reducing the property's market value. The bank may reject the buyer's mortgage application, and the buyer's lawyer will demand approved plans, stalling or collapsing the sale.
Can I get retrospective approval from the local council after building an unapproved extension?
Under s.70(14) of Act 133, retrospective plans are accepted only upon paying a penalty of not less than 5 times but not exceeding 20 times the prescribed submission fee. However, if the extension breaches state setback rules, the council will reject it and order demolition.
What are the statutory court penalties under Act 133 for carrying out unauthorised alterations?
Under s.70(11) of Act 133, unauthorised alterations carry a fine on conviction not exceeding RM25,000 (confirm the current amount with your local authority), and a Magistrate's Court shall issue a mandatory order to alter or demolish the building.
Lewis Chong
REN 69566 · IQI GlobalProperty advisor helping KL, JB, and Penang buyers make data-backed property decisions.
Related reading
Use one buyer framework across different news.
Your neighbour built without approval
When a neighbour builds an unapproved extension, complaining to the wrong forum wastes critical time. Understand how local authorities enforce building control breaches under s.72 of Act 133, why the Homebuyer Tribunal has zero jurisdiction, and how to file an actionable complaint.
Lewis Conclusion
When a neighbour begins unauthorized structural construction next door, act swiftly before concrete hardens. Submit a formal, dated written complaint with clear time-stamped photographs directly to your local council's building control department, citing unauthorized works under s.70 of Act 133. Do not waste time approaching the Homebuyer Tribunal, which has zero jurisdiction over neighbour disputes. If the unapproved work threatens structural damage to your shared wall or property, consult a civil litigation lawyer immediately to seek an emergency injunction in the civil courts while council building enforcement proceeds under s.72.
The wall between two terrace houses: who owns it, who may build on it
The dividing wall between terrace houses is governed by both registered cadastral boundaries and common-law rights of support. Neither neighbour may unilaterally hack, overload, or alter a party wall without qualified submissions under Act 133.
Lewis Conclusion
Never allow a neighbour or their contractor to hack into your shared dividing wall without inspecting an approved structural plan signed by a registered professional engineer. Conduct a land search to verify your exact cadastral boundary against the physical wall line. If a neighbour begins unauthorized demolition or structural loading of the party wall, lodge an urgent complaint with your local council's building control department citing s.70 of Act 133, and engage a litigation lawyer to serve a formal cease-and-desist letter before structural cracking occurs.
Rear extensions on a terrace house
Extending the rear of a terrace house is subject to state-adopted setback minimums and statutory drainage rules under Act 133. Building up to the back drain without approval risks municipal demolition under s.72 and severe civil liability for surface water flooding.
Lewis Conclusion
Never build a rear extension to your back boundary without an approved building plan that satisfies your state's adopted by-laws. Verify your council's required rear setback before signing a renovation contract, and ensure roof rainwater is channeled strictly into public storm drains through internal downpipes. If you build illegally, you risk municipal demolition notices under s.72 of Act 133, fines up to RM25,000 under s.70(11) (confirm the current amount with your local authority), and substantial civil lawsuits from the neighbour behind if run-off floods their property.
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Check boundary setback and site coverage limits directly with your local authority building control department.
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Engage a registered professional architect or engineer to submit plans under s.70(2) before commencing extensions.
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Ensure proposed extensions comply fully with the Uniform Building By-Laws as adopted by your specific state.
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Never accept verbal assurances from building contractors that municipal extension permits can be bypassed safely.