[{"data":1,"prerenderedAt":151},["ShallowReactive",2],{"guide-smart-home-prewire-renovation-en-US":3},{"guide":4,"related":131},{"title":5,"seoTitle":6,"description":7,"summary":8,"sections":9,"faq":89,"date":105,"service":106,"order":107,"sources":108,"slug":129,"locale":130},"Pre-wiring a renovation for a local-first smart home","Smart Home Pre-Wire Checklist for Renovations","What to wire while walls are open for a local smart home in NYC: switch neutrals, deeper boxes, thermostat cable, door runs and a controller location.","While walls are open, the most valuable smart-home preparation is electrical rather than gadget-related: a neutral conductor in every switch box, boxes deep enough for smart dimmers, thermostat cable with spare conductors, low-voltage runs to doors, cameras and equipment, and a controller location with backup power and a central spot for radios. These items cost little during a renovation and are disruptive to add after finishes are complete. Network closet, cabling and Wi-Fi design are planned in the same low-voltage scope.",[10,23,31,36,45,56,66,77],{"heading":11,"paragraphs":12,"list":14},"Pre-wire checklist",[13],"This checklist covers what a locally controlled smart home needs from the electrical and low-voltage rough-in. It applies to gut renovations and to any room where walls or ceilings will be opened.",[15,16,17,18,19,20,21,22],"A neutral (white) conductor in every switch box, including 3-way and 4-way locations.","Deeper single and multi-gang switch boxes sized for smart dimmers, with box fill calculated under NEC 314.16.","Thermostat cable with spare conductors at each thermostat location, even where today's system uses two wires.","Low-voltage cable to each main entry door for a door station, contact sensors and an electric strike or powered lock.","Network cable to each planned camera location.","A controller location in the network closet with a dedicated circuit and a UPS, plus a central, high, non-metal location for the radios.","Low-voltage runs to shade pockets, the garage door opener, the boiler or water heater room for leak sensors and a shutoff valve, the electrical panel for an energy monitor, and the EV charger location.","Conduit or a pull string to each floor for future cabling.",{"heading":24,"paragraphs":25,"list":28},"Neutral conductors at switch boxes",[26,27],"Most Wi-Fi, Zigbee, Z-Wave and Matter switches need a neutral conductor to stay powered while the light is off. Many older NYC switch loops carry only the hot and the switched hot, with no neutral in the box. This is the most common obstacle when owners add smart switches to pre-war apartments and row houses.","When walls are open, we have our licensed partner electrician run a neutral to every switch location. Borrowing a neutral from a different circuit is a code violation and creates a hazard, so it is never an acceptable shortcut. Where a neutral cannot be added, there are two practical alternatives:",[29,30],"Smart bulbs on a circuit whose switch stays on, controlled from a wireless wall remote so the wall still works as a switch.","A smart relay installed at the fixture, where power and neutral are already present.",{"heading":32,"paragraphs":33},"Box depth and box fill",[34,35],"Smart dimmers are deeper than standard switches and give off heat. Shallow boxes in plaster walls are a frequent problem: a dimmer forced into a tight box can crack the faceplate or strain and overheat the splices. Deeper boxes give the conductors and the device the room they need, and the electrician calculates box fill under NEC 314.16 for the number of conductors and devices in each box.","Multi-gang boxes need extra attention. When two or more dimmers share a box, manufacturers often require derating, which lowers the load each dimmer may carry. We check the manufacturer's instructions for the selected dimmers before the boxes are set, so the lighting load and the box size are matched.",{"heading":37,"paragraphs":38,"list":40},"Thermostats and heating controls",[39],"Many smart thermostats need a common wire (C-wire) for continuous power, and a later change to a heat pump can add control stages. Thermostat cable is inexpensive, while replacing it after finishes is not.",[41,42,43,44],"We recommend thermostat cable with more conductors than today's system uses, such as 18\u002F8, so that a C-wire and future stages can be connected without opening the wall.","Place each thermostat on an interior wall, away from radiators, supply registers and direct sunlight.","For local control, choose a Z-Wave thermostat or one that can pair with Home Assistant through HomeKit, as described in our guide to smart-home devices that work without the cloud.","The boiler or heat pump interface is completed by our licensed HVAC partner. Automation adjusts setpoints only and is never wired into boiler or heat pump safety circuits.",{"heading":46,"paragraphs":47,"list":49,"after":54},"Doors, locks and sensors",[48],"Door preparation is simple during framing and difficult afterward. Planning it with the door hardware avoids later drilling through finished frames.",[50,51,52,53],"Use a standard door bore and backset so that Z-Wave or Matter deadbolts fit without modification.","Run Cat6 or 22\u002F4 cable to the main entry for a door station, and low-voltage cable into the frame for an electric strike or powered lock.","Pre-wire contact sensors at entry doors and accessible windows. Intrusion alarm work is performed by a New York State licensed alarm installer.","Keep a keyed override on every lock so the door opens without power or a network.",[55],"In small multifamily buildings, NYC's Tenant Data Privacy Law prohibits requiring a smart access system for entry to a tenant's own unit, so unit doors keep a key option. Door hardware that releases on a fire alarm signal is coordinated with licensed electrical and fire alarm trades.",{"heading":57,"paragraphs":58,"list":60},"Where the controller and radios go",[59],"The controller, such as Home Assistant Green or a mini PC, sits in the network closet with the router and switch. The radios have different needs: Zigbee, Thread and Z-Wave signals carry poorly out of a metal cabinet or a basement, so the adapters usually belong in a central, elevated location on the main living floor.",[61,62,63,64,65],"Connect each adapter with a shielded USB 2.0 extension cable to a central shelf, or use a network-attached coordinator wired back to the closet.","Keep the Zigbee adapter away from Wi-Fi access points and USB 3 ports, and use Zigbee channel 15, 20 or 25.","Stand the Connect ZWA-2 Z-Wave adapter upright, clear of obstructions.","A single Connect ZBT-2 runs Zigbee or Thread, not both, so plan two adapter positions if the home will use both.","Keep Thread border routers and Wi-Fi Matter devices on the same network segment (VLAN) as Home Assistant.",{"heading":67,"paragraphs":68,"list":70,"after":75},"Network separation and power during outages",[69],"Separating devices onto different networks improves security, but a strict design can break Matter, HomeKit and camera discovery, which rely on multicast. We plan the segments before the network is configured.",[71,72,73,74],"A home automation network for Home Assistant, Matter and Thread devices, and other locally controlled equipment.","A separate network for cloud-only gadgets and guests.","A camera network without internet access, reachable from Home Assistant and the recorder.","A UPS for the fiber terminal, router, switch and controller. Home Assistant monitors the UPS through its NUT integration and can shut down cleanly. If the home has a battery, Tesla Powershare or a generator, the closet circuit goes on the backed-up panel.",[76],"Remote access uses Home Assistant Cloud or a VPN rather than an open router port. In March 2026, the FCC added foreign-produced consumer routers to its Covered List; the action concerns new equipment authorizations, not the continued use of routers already installed, though it may affect which models are sold and how long they receive updates. Keeping the controller independent of any one router brand avoids relying on a single product line.",{"heading":78,"paragraphs":79,"list":81,"after":87},"Handover, cost factors and how we work",[80],"Neutrals, deeper boxes and spare cable add modest material and labor while walls are open. The cost depends on the number of switch and device locations, plaster versus drywall, the distance to the network closet, and building approvals in co-ops and condominiums. Adding the same work after finishes requires opening and repairing walls.",[82,83,84,85,86],"A panel schedule showing smart switch locations.","A device list with the Home Assistant IoT class of each device.","Backups of the Z-Wave, Zigbee and Thread networks.","Administrator credentials held in the owner's name.","Home Assistant backups stored off the controller.",[88],"We mark neutrals, box sizes, thermostat and door runs, and the controller and radio locations on your plans, and we price the electrical and low-voltage work together. Electrical work is performed by our licensed partner electricians.",[90,93,96,99,102],{"q":91,"a":92},"Do smart switches need a neutral wire?","Most do, because the switch needs continuous power for its radio. Running a neutral to every switch box during a renovation keeps the choice of switches open.",{"q":94,"a":95},"Can neutrals be added without opening walls?","Sometimes the electrician can fish new cable through existing paths, but plaster walls often need small openings and patching. Where that is impractical, smart bulbs with a wireless wall remote or a relay at the fixture are alternatives.",{"q":97,"a":98},"What thermostat cable should be run?","We recommend cable with more conductors than the current system uses, such as 18\u002F8, so that a C-wire and future heat pump stages can be connected later without opening the wall.",{"q":100,"a":101},"Where should the smart-home hub go?","The controller goes in the network closet on a UPS. The Zigbee, Thread and Z-Wave adapters go in a central, elevated location away from Wi-Fi access points, connected by a USB extension or over the network.",{"q":103,"a":104},"Is a permit needed for smart switches in NYC?","Replacing or adding switches is electrical work. It is performed by our licensed partner electrician, who files for the permit and inspection when the scope requires one.","2026-10-25","low-voltage",112,[109,113,116,119,122,125],{"title":110,"url":111,"publisher":112},"Zigbee Home Automation - Home Assistant","https:\u002F\u002Fwww.home-assistant.io\u002Fintegrations\u002Fzha\u002F","Home Assistant",{"title":114,"url":115,"publisher":112},"Thread - Home Assistant","https:\u002F\u002Fwww.home-assistant.io\u002Fintegrations\u002Fthread\u002F",{"title":117,"url":118,"publisher":112},"Matter - Home Assistant","https:\u002F\u002Fwww.home-assistant.io\u002Fintegrations\u002Fmatter\u002F",{"title":120,"url":121,"publisher":112},"Home Assistant Connect ZWA-2 - Home Assistant","https:\u002F\u002Fwww.home-assistant.io\u002Fconnect\u002Fzwa-2\u002F",{"title":123,"url":124,"publisher":112},"Securing your Home Assistant - Home Assistant","https:\u002F\u002Fwww.home-assistant.io\u002Fdocs\u002Fconfiguration\u002Fsecuring\u002F",{"title":126,"url":127,"publisher":128},"Tenant Data Privacy Law - HPD","https:\u002F\u002Fwww.nyc.gov\u002Fsite\u002Fhpd\u002Fservices-and-information\u002Ftenant-data-privacy-law.page","NYC Department of Housing Preservation and Development","smart-home-prewire-renovation","en-US",[132,138,142,147],{"slug":133,"title":134,"description":135,"service":136,"date":137},"nyc-renovation-permits","NYC permits for renovation, electrical and plumbing work","Which renovation, electrical and plumbing jobs need a NYC Department of Buildings permit, who files it, and what changes on Long Island.","electrical","2026-10-24",{"slug":139,"title":140,"description":141,"service":136,"date":137},"electrical-panel-upgrade","Electrical panel and service upgrades for NYC and Long Island homes","When an older NYC or Long Island home needs a new panel or a bigger electrical service, what the work involves, and how long it takes.",{"slug":143,"title":144,"description":145,"service":146,"date":105},"ev-charging-without-service-upgrade","EV charging without an expensive service upgrade","Load sharing, CT-clamp load management, dryer-outlet sharing and right-sized chargers: ways to add EV charging in NYC and Long Island without upgrading your electrical service.","ev-charging",{"slug":148,"title":149,"description":150,"service":146,"date":137},"ev-charger-installation","Installing a home EV charger in NYC or Long Island","Level 1 vs Level 2 charging, panel capacity, permits, Tesla Powershare, and what to know for houses and buildings in NYC and Long Island.",1792924280170]