Renovation is the cheapest time to go smart, but not every gadget earns its keep. Here's what's actually worth wiring in.
Key Takeaway
Renovation is the only practical window to install wired smart home features like in-wall lighting circuits, centralised switches, and hidden trunking, since retrofitting these later means re-hacking finished walls. Homeowners should prioritise features that improve daily convenience and resale value, while skipping trend-driven gadgets that add cost without meaningful long-term use.
Smart home technology has moved well past novelty status in Singapore, video intercoms, app-controlled locks, and voice assistants are now common sights in new BTOs, resale units and condos alike. But renovation is a decision point that's easy to get wrong in either direction: skip the wiring-dependent features now and you'll pay far more to retrofit them later, or over-invest in gadgets that sound impressive in a showroom but rarely get used once the novelty wears off.
This guide breaks down what's genuinely worth building into your renovation, and what you can safely leave for later, or skip altogether.
The core reason smart home planning belongs in the renovation stage isn't about the technology itself, it's about the wiring.
Features that rely on hidden cabling, in-wall power, or centralised control panels need to be planned before your walls and ceilings are closed up. Once tiling, plastering, and false ceilings are complete, adding a new wired circuit means hacking into finished surfaces, which is disruptive, costly, and often leaves visible patch marks.
Battery-powered or plug-and-play smart devices, on the other hand, don't have this constraint. They can be added, swapped, or removed at any time without touching your renovation work. Keeping this distinction in mind makes the rest of the decision-making much simpler.
Smart lighting circuits. Rather than retrofitting smart bulbs into existing sockets, wiring smart lighting directly into your circuit at the renovation stage gives you dimming, scene control, and scheduling without visible smart bulbs or dongles. It also tends to be more reliable than Wi-Fi-dependent bulbs since it runs through your main electrical system.
Centralised smart switches. A single wall panel that controls multiple lighting zones, fans, and curtains is far cleaner than a row of individual switches, and it needs to be planned into your electrical layout before wiring is finalised.
Video intercom systems. Most new developments in Singapore already come with basic video intercoms, but upgrading to a smart intercom that syncs with your phone lets you see and speak to visitors remotely. This is worth doing during renovation since it often requires rewiring at the door and gate.
Smart door locks. While some smart locks can be retrofitted onto existing doors, renovation is the ideal time to ensure your door frame, thickness, and wiring (for locks that need power) are compatible, avoiding compatibility issues later.
Structured cabling and Wi-Fi mesh points. If your home has multiple rooms or a layout with signal-blocking walls, running Ethernet cabling to key locations during renovation ensures stronger, more reliable connectivity for all your smart devices, something that's genuinely difficult to add after the fact.
App-controlled air-conditioning. For split-unit air-conditioning, installing smart AC controllers or opting for units with built-in app control during renovation lets you manage cooling remotely and track energy usage, which is particularly useful in Singapore's climate.
Smart fridges and ovens. These appliances carry a significant price premium for smart features that, in practice, get used far less than expected. A standard appliance paired with a smart plug or manual scheduling achieves most of the same convenience at a fraction of the cost.
Voice-controlled curtain motors. Motorised curtains sound appealing, but the mechanical components tend to be the first thing to need repair, and the voice-control layer adds cost without solving a real daily problem for most households. If you want automated curtains, a simpler app-scheduled motor is usually sufficient.
Robot vacuums with built-in smart home integration. While genuinely useful appliances, robot vacuums don't need to be part of your renovation planning — they're standalone purchases that work regardless of your home's wiring, and it's worth waiting to see actual usage patterns before committing to a premium integrated model.
Overly complex centralised hubs. Some smart home packages push an all-in-one hub controlling everything from lighting to appliances to security. For most households, especially smaller HDB flats, this level of centralisation adds maintenance complexity and single points of failure without a proportional gain in convenience.
Smart mirrors and smart water fixtures. These tend to be marketed heavily but used minimally after the first few weeks. Unless there's a specific accessibility or health-related need, they're rarely worth the premium.
For a standard HDB flat, a practical smart home setup covering lighting, a video intercom, and a smart lock typically costs between SGD 2,000 and SGD 5,000. Homeowners looking for a more comprehensive system, including centralised control panels, multi-room audio, and integrated climate control, should budget SGD 8,000 to SGD 20,000 or more, particularly for condos and landed properties with larger footprints.
It's worth allocating this as a distinct line item in your renovation budget from the start, rather than treating it as an afterthought once carpentry and finishes have already consumed most of the budget.
If you're unsure whether a feature belongs in your renovation plan, ask two questions: does it require wiring or structural changes to install, and will you realistically use it every day? Features that answer yes to both, lighting, intercoms, locks, connectivity are worth building in now. Features that answer no to either question can usually wait until after move-in, when you'll have a clearer sense of how you actually use your home.
Key Questions
Features that require wiring changes or hacking should be installed during renovation, including smart lighting circuits, centralised smart switches, video intercom systems, in-wall power points for smart devices, and structured cabling for Wi-Fi mesh points. Installing these after renovation is completed usually means re-opening finished walls and ceilings, which significantly increases cost and disruption.
Yes, for HDB flats a smart home system is worth it when it focuses on practical daily-use features such as smart door locks, video intercoms, and lighting control, which improve security and convenience without a large recurring cost. Homeowners should be selective, as HDB's renovation permit rules restrict certain structural changes, and overly complex systems can be harder to maintain or repair within a flat's smaller footprint.
Smart gadgets that are not permanently wired into the home, such as smart fridges, smart ovens, robot vacuums, or voice-controlled curtain motors, are generally not worth prioritising during renovation since they can be purchased and installed independently at any time. These are better treated as optional add-ons after move-in, rather than renovation-stage decisions that lock in cost and design constraints early.
A basic smart home setup covering smart lighting, a video intercom, and a smart lock typically costs between SGD 2,000 and SGD 5,000 for a standard HDB flat, depending on the number of rooms and brand chosen. More comprehensive systems with centralised control panels, multi-room audio, and integrated climate control for condos or landed properties can range from SGD 8,000 to SGD 20,000 or more.