# Factory Extension Selangor | Factory Builder Malaysia > Factory extension and renovation in Selangor: extra bays, mezzanines, office blocks, roof and floor upgrades, and regularising unapproved extensions. URL: https://factorybuilder.my/factory-extension-renovation/ starPriority service Since August 2002 · Reg. 588367-M task\_altEngineer-led (Ir.) open\_in\_full Factory Extension and Renovation // Selangor and the Klang Valley # Extend, Upgrade or Renovate Your Existing Factory Last updated: 10 November 2026 Extra bays, mezzanine floors, office blocks, new roofs and recast floors. Our engineers check how new work ties into your existing structure before anything is designed. - check\_circleExtra bays and added floor area - check\_circleMezzanine floors for storage or offices - check\_circleOffice block additions - check\_circleRoof replacement, insulation and floor repair or recast architecture Request a Quotation [/contact/ →](/contact/) chat WhatsApp the Project Team [https://wa.me/60192362343?text=Hello%2C%20I%20would%20like%20to%20discuss%20a%20factory%20project. →](https://wa.me/60192362343?text=Hello%2C%20I%20would%20like%20to%20discuss%20a%20factory%20project.) Quoted per project after the brief is reviewed. Call the office on +603-9076 7341 [tel:+60390767341 →](tel:+60390767341) . ![Existing factory with a new extension bay under construction](/images/misc/older-factory-in-shah-alam-industrial-section-with.webp) Every quotation lists Written scope Inclusions Exclusions Responsibilities - history Building since 2002 - engineering Led by a professional engineer (Ir.) - groups Engineering, PM and QS in one team - fact\_check Written inclusions and exclusions ## What Does a Factory Extension Involve? Has production outgrown your building? For many SME owners in Selangor, factory extension and renovation is quicker than relocating. At Factory Builder Malaysia, where factory construction in Selangor [/ →](/) is our main work, we see this all the time. Owners keep their land, their team and their delivery routes. A typical job covers some or all of these: - **Extra bays** for production or storage. - **Mezzanine floors** for storage or offices. - **Office space** added at the front or side. - **Roof and floor upgrades** for leaking roofs and cracked floors. Before any of it starts, we check how the new work ties into the existing structure and foundations. Many older estates, such as Shah Alam’s numbered sections, have built-up lots. The work is often a rebuild, extension or upgrade. We plan the works around your operations and explain each approval step. According to FactoryHub’s 2026 approvals guide, extensions need building plan approval through the council’s One Stop Centre before construction starts. When the work ends, your principal submitting person (the architect or engineer) files the Certificate of Completion and Compliance (CCC, Form F). Built an extension without approval in the past? We can help you regularise it. ## Why Start With the Existing Structure? Every extension depends on the building it joins. Before designing new work, our engineers look at: - **Existing footings.** New foundations often sit right next to old ones, and they must not undermine them. - **Structural tie-in.** New steel or concrete has to connect to the existing frame without overloading it. - **Roof and drainage.** New roofs must shed water into gutters and drains that can handle the extra area. - **Floor levels.** New slabs need to meet the old floor cleanly for forklifts and trolleys. Mezzanines need extra care. FactoryHub’s 2026 guide to factory specs points out that each mezzanine column puts a point load on the ground slab. So we check the slab as well as the frame. We also check what the lot still allows. **Building setbacks** and **plot ratio** limit how much floor area you can add, and the **local authority (PBT)** needs to see the plans. A mezzanine adds usable floor area, so EMTS Group notes that PBT approval is generally required, with Bomba clearance often needed too. Our guide to factory extension approvals [/guide/factory-extension-approval/ →](/guide/factory-extension-approval/) explains when approval is needed and how unapproved works are regularised. ## When Should You Extend, Upgrade or Rebuild? There is no single answer. The right choice depends on the land left on your lot, the condition of the building, and how long it needs to serve your business. | Option | Usually suits | Main thing we check | | --- | --- | --- | | Extend | Lots with floor area left within setbacks and plot ratio | Tie-in to the existing frame and footings | | Upgrade | Sound buildings with a leaking roof, cracked floor or no proper office | Condition of the roof, floor and drainage | | Rebuild | Older buildings on built-up lots that no longer suit the operation | Approvals and how production carries on meanwhile | Our guide on whether to extend your factory or build new [/guide/extend-factory-or-build-new/ →](/guide/extend-factory-or-build-new/) works through the decision. For budgeting, what affects the cost of a factory extension [/guide/factory-extension-cost/ →](/guide/factory-extension-cost/) explains the main cost drivers. ### Common Problems We Solve - **Running out of space.** Extra bays or a mezzanine floor [/guide/factory-mezzanine-floor/ →](/guide/factory-mezzanine-floor/) for storage or offices. - **Leaking roofs and cracked floors.** **Metal roofing** and **roof insulation** replacement, and **floor recast** where repair is not enough. See roof leaking or floor cracking [/guide/factory-roof-leak-floor-crack/ →](/guide/factory-roof-leak-floor-crack/) . - **No proper office.** An office block added at the front or side. - **Old unapproved works.** Guidance on regularising them before new works. That last one deserves a quick warning. Under the Street, Drainage and Building Act 1974, altering a building without the council’s written permission can bring a fine of up to RM25,000 and a court order to alter or demolish it. Letting or selling an unauthorised building is also an offence, so sort it out before you lease or sell. ## How Do Works Happen Next to a Running Operation? Most owners cannot stop production while they extend. So we plan the works in **phases** and keep your lines moving. Here is how we usually run a live site: - **Hoarding** separates the construction area from your production floor. - **Safe access routes** are agreed with you before work begins. - **Noisy work** is coordinated with your team, so it avoids your busiest shifts. **DOSH site safety** requirements apply throughout. Depending on project size, construction standard CIS 27:2019 calls for a Site Safety Supervisor on site at least 15 hours a week, and larger jobs may need a Safety and Health Officer. Read more in extending a factory while production continues [/guide/factory-extension-during-production/ →](/guide/factory-extension-during-production/) . Planning a factory extension and renovation on your Selangor lot? Send us your lot details and current layout, and we’ll tell you what is realistic. report Sound familiar? ## Problems We Solve With Extension and Renovation warning ### Production has outgrown the building An extra bay or a longer production floor can be quicker than relocating, if the lot still has room within its setbacks and plot ratio. warning ### Need space without a bigger footprint A steel mezzanine floor adds storage or office space inside the building, once headroom and the existing structure are checked. warning ### Old roof leaking, floor cracking Corroded sheets, failed fixings and cracked slabs disrupt production. We find the cause and recommend repair, replacement or recast. warning ### An extension built without approval Unapproved works can block future plans. We explain the steps to regularise them with the local authority before new work is added. request\_quote Quotation scope ## What Does a Extension and Renovation Quotation Cover? Extensions carry more unknowns than new builds, so the quotation is clear about what is assumed about the existing building. ### add\_taskTypically included - Structural checks of the existing frame and footings for the new work - New bays, mezzanines or office blocks as specified - Roof, insulation and floor works as listed - Temporary protection and separation from your operation - Making good where new work meets old ### blockUsually excluded - remove\_circleRelocating or reinstalling machinery unless listed - remove\_circleRepairs to parts of the building outside the agreed scope - remove\_circleHidden defects found once existing finishes are opened up (handled as written variations) - remove\_circleItems marked provisional until their scope is confirmed ### assignment\_indResponsibilities stated - person\_checkWho submits extension plans to the council - person\_checkWho handles regularising any existing unapproved works - person\_checkWho manages your staff and deliveries around the site - person\_checkAgreed working hours and access routes Exact items depend on your project. The quotation you receive lists them for your site and brief. verified Why choose us ## Why Choose Factory Builder Malaysia for Extension and Renovation? foundation ### Structure checked first Our engineers check the existing frame and footings before designing anything, so new work ties in safely. precision\_manufacturing ### Production keeps running We phase the works, separate the site and agree access routes with your team. balance ### Honest repair-or-rebuild advice Sometimes a repair is enough. Sometimes a rebuild is better value. We explain which and why. gavel ### Approval guidance We explain the approval steps for new extensions and for regularising older unapproved works. fact\_check ### Written assumptions The quotation states what we have assumed about the existing building, so hidden conditions are handled openly. location\_city ### Experience with older estates Many Shah Alam, Balakong and Cheras lots are already built on. Extensions and upgrades are a large part of our work there. route The job process ## How Does Our Extension and Renovation Process Work? Works next to a running operation are phased. Timing depends on the scope, approvals and how much the site can be closed off at once. 1. STEP 01 travel\_explore ### Site visit and brief We see the building, hear what you need and ask for any existing drawings and approvals. 2. STEP 02 straighten ### Structural and lot check Engineers check the existing structure and footings, and how much the lot allows under setbacks and plot ratio. 3. STEP 03 view\_timeline ### Design and phasing We design the new work and plan the phases around your operation. 4. STEP 04 request\_quote ### Written quotation Inclusions, exclusions, assumptions about the existing building and responsibilities. 5. STEP 05 construction ### Phased works Construction with separation, safe access and regular updates until handover. photo\_library On site ## Extension and Renovation Work in Progress Typical stages of this kind of work. Click any photo to enlarge. forum Client feedback ## What Our Factory Clients Say Two of our factory clients have shared feedback on their projects. Both built a factory with an office frontage and an industrial building behind. format\_quote > Kelvin built a factory that combines an office frontage with an industrial building behind it. He told us the construction scope and the design details were explained clearly, so he knew what was being built and what the quotation covered. KL Kelvin Lee Factory client · Factory with office frontage and industrial building behind format\_quote > Zahari's factory also pairs an office frontage with the production building at the back. His feedback was that the scope of works and the design details were set out clearly from the start, which made decisions easier during the build. Z Zahari Factory client · Factory with office frontage and industrial building behind help Questions owners ask ## Extension and Renovation FAQs Still have a question? Send what you have. Enquiries are welcome even if some details are missing. Request a Quotation [/contact/ →](/contact/) ### Can you extend my existing factory? expand\_more In most cases, yes. We add bays and floor area, mezzanine floors and office blocks, and we upgrade roofs and floors. Before we design anything, our engineers check the existing structure and foundations to see how new work will tie in, and we check how much more floor area the lot allows under its setbacks and plot ratio. Some older buildings need strengthening before they can take new loads. If an extension is not practical, we will say so and explain the alternatives, including building new. ### Is it better to extend or build a new factory? expand\_more It depends on how much land is left on your lot, the condition and capacity of the existing structure, how much disruption your operation can take, and whether the current layout still suits the business. Extending is not always cheaper, because tying into an older building and working around production both add cost. We can assess both options during planning. Our guide on extending your factory or building new sets out the questions to ask. ### Can production continue during the works? expand\_more Often, yes. We phase the works, put up hoarding to separate the site from your operation, agree safe access routes for staff and deliveries, and coordinate noisy or dusty work with your team. Some disruption is unavoidable, but it is planned and controlled, and you are kept informed throughout. Our guide on extending a factory while production continues explains what to expect. ### Does a mezzanine floor need approval? expand\_more Often, yes, because it adds floor area. Use also matters. Office mezzanines and storage mezzanines have different floor loading and fire requirements. We check with the council requirements for your site. ### My factory has an unapproved extension. What now? expand\_more Unapproved works may be regularised through the local authority, assessed case by case. Leaving them can cause problems when you sell, refinance or extend again. Tell us early and we explain the steps. ### Why does my factory roof leak? expand\_more Common causes are corroded sheets, failed laps or fixings, and blocked or undersized gutters. We find the cause and recommend repair, partial replacement or full replacement with new insulation. ### Can a cracked floor be repaired? expand\_more It depends on why it cracked. Some cracks can be repaired. Others point to loads beyond the original design or poor ground, and a recast is the better fix. We assess before recommending. ### What affects the cost of an extension? expand\_more Tie-ins to the existing structure, new foundations next to old footings, working around operations, and approvals or regularisation. Each project is quoted after a site visit and review of the brief. ### Do you work in Shah Alam's older sections? expand\_more Yes. Shah Alam lots are often already built on, so rebuilds, extensions and upgrades are much of the work there. Plans go to MBSA. menu\_book Guides ## Factory Extension and Renovation Guides Plain answers to the questions owners ask before they commit. All guides arrow\_forward [/guide/ →](/guide/) Explainer ### Adding a Mezzanine Floor to a Factory What adding a factory mezzanine involves: storage or office use, floor loading and structure checks, headroom and approval considerations. Read guide arrow\_forward [Adding a Mezzanine Floor to a Factory →](/guide/factory-mezzanine-floor/) Explainer ### Factory Extension Approvals and Regularising an Unapproved Extension When a factory extension needs approval, how setbacks and plot ratio limit it, and regularising unapproved works. Read guide arrow\_forward [Factory Extension Approvals and Regularising an Unapproved Extension →](/guide/factory-extension-approval/) Explainer ### Old Factory Roof Leaking or Floor Cracking: Repair, Replace or Rebuild? Why factory roofs leak and floors crack, roof and insulation replacement, floor repair vs recast, and when to rebuild. Read guide arrow\_forward [Old Factory Roof Leaking or Floor Cracking: Repair, Replace or Rebuild? →](/guide/factory-roof-leak-floor-crack/) Decision guide ### Extend Your Factory or Build New? Extend your factory or build new: land left on the lot, structural capacity, disruption and long-term fit. Read guide arrow\_forward [Extend Your Factory or Build New? →](/guide/extend-factory-or-build-new/) Decision guide ### Extending a Factory While Production Continues What to expect when building next to a running operation: phasing and site separation, safety and access, noise and dust, and communication. Read guide arrow\_forward [Extending a Factory While Production Continues →](/guide/factory-extension-during-production/) Decision guide ### What Affects the Cost of a Factory Extension Factory extension cost drivers: tying into the old structure, new foundations by old footings, operations and approvals. Read guide arrow\_forward [What Affects the Cost of a Factory Extension →](/guide/factory-extension-cost/) hub Also from the same team ## Related Services electrical\_services ### Detailed Engineering and M&E Works Piping, mechanical and electrical design scoped to the building and its use, then installed by the same team. View service arrow\_forward [Detailed Engineering and M&E Works →](/detailed-engineering-me-works/) construction ### Civil and Infrastructure Works Site works such as earthworks, drainage, roads and hardstanding around the building. View service arrow\_forward [Civil and Infrastructure Works →](/civil-infrastructure-works/) assignment ### Factory Construction Planning A construction plan, engineering requirements and budget based on the site, the intended use and any existing drawings. View service arrow\_forward [Factory Construction Planning →](/factory-construction-planning/) ![](/images/misc/steel-portal-frame-factory-under-construction-in-s.webp) Enquiries welcome with details missing ## Ready to Talk About Extension and Renovation? Send your brief for factory extension and renovation. We review it, set out the plan and issue a quotation with inclusions, exclusions and responsibilities. architecture Request a Quotation [/contact/ →](/contact/) chat WhatsApp the Project Team [https://wa.me/60192362343?text=Hello%2C%20I%20would%20like%20to%20discuss%20a%20factory%20project. →](https://wa.me/60192362343?text=Hello%2C%20I%20would%20like%20to%20discuss%20a%20factory%20project.) call +603-9076 7341 [tel:+60390767341 →](tel:+60390767341) - check\_circleWritten inclusions and exclusions - check\_circleEngineer-led since 2002 - check\_circleOne team, planning to handover