On a South Florida custom home, the low-voltage package is often the last major system still described as “TBD” when bids go out. That ambiguity creates friction later: change orders after drywall, schedule collisions with the electrician, and owner expectations that were never written into the contract.
General contractors who run clean jobs treat low voltage the way they treat mechanical or millwork—as a defined scope with drawings, inclusions, exclusions, and a responsible party. The question is not whether the home will have structured wiring, lighting control, shades, networks, and security. The question is what belongs in the low-voltage scope of work so those systems land without delaying the punch list.
Martec Technologies has served Miami-Dade, Broward, and Palm Beach builders since 2013 across more than 1,000 projects. The outline below reflects how we write scopes that GCs can price, schedule, and defend.
Why Low Voltage Needs Its Own Line Item
Low voltage sits between trades. Power feeds come from electrical. Pockets and chases may sit in millwork. Camera locations affect exterior elevations. Access points affect ceiling plans. If the package is buried inside a vague “AV / smart home allowance,” nobody owns the pathway decisions at rough-in—and rough-in is where most future pain is either prevented or created.
A dedicated low voltage scope of work for builders in Miami and the surrounding counties should name the systems, the documentation deliverables, the coordination meetings, and the handoff package. Anything less invites three subcontractors to claim the same wall cavity and none to claim the unfinished keypad engraving.
Core Systems That Belong in the Bid
For a custom single-family or estate residence, the following typically belong under one low-voltage contractor when the owner expects a unified result:
Structured cabling and network infrastructure
Cat6/Cat6A runs to data locations, Wi-Fi access point homeruns, rack or enclosure location, patching, and a network designed for the density of streaming, cameras, and automation traffic common in luxury homes. In South Florida estates, outdoor coverage and guest-network separation are ordinary requirements, not upgrades.
Lighting control
Lutron HomeWorks QSX or RadioRA 3 design, keypads, processors, load scheduling coordinated with the electrician, and scene programming. Lighting control is not a switch trim package; it requires low-voltage pathways and panel space that must appear on drawings before rough-in.
Motorized shades
Architectural shade motors, power and control wiring, pocket coordination with millwork, and integration to the lighting or automation platform. Shade scope that arrives after pockets are built is not a shade scope—it is a remediation project.
Home automation
Savant or Control4 (and Crestron where specified) as the unifying layer for lighting, climate, shades, security, and entertainment. In-house programming matters here: third-party programmers introduce schedule risk the GC cannot control.
Audio and video
Distributed audio, outdoor zones, primary suite and living-area displays, and infrastructure for future displays even when panels are owner-furnished later. Brands such as Sonance are frequently specified where architectural speakers must disappear into the finish schedule.
Security, access, and surveillance
Door hardware interfaces, cameras, and alarm pathways coordinated with the envelope and landscape lighting so devices do not appear as afterthoughts on a completed façade.
BDA / emergency radio coverage where required
On larger or denser projects, emergency responder radio coverage can sit naturally with the same low-voltage team already responsible for pathways and head-end rooms—reducing the number of specialty subs on the job.
Not every custom home needs every line at the same intensity. What every bid needs is clarity about which lines are included, which are alternates, and which are owner decisions still pending.
Documentation the GC Should Expect
A professional low-voltage partner should provide more than a product list. At minimum:
- Low-voltage floor plans and device legends before walls close
- Connection diagrams for panels, racks, and processors
- Coordination notes for electrical (dedicated circuits, neutrals, panel adjacency)
- Millwork coordination for shade pockets and rack rooms
- Permit responsibility clearly stated
- A completion handoff package documenting runs, panels, and device addresses
This is the standard we describe for partners on our builders page: one sub for automation, lighting, AV, security, structured wiring, and BDA, with documentation that survives turnover to the owner.
Timing Relative to Electrical and Millwork
Engage the low-voltage contractor before electrical rough-in is locked. Lighting control wiring, shade power, camera paths, and access-point homeruns all compete for the same cavities. Pre-construction meetings with electrical and HVAC prevent the familiar conflict where a thermostat, keypad, and return grille claim the same wall.
Shade and keypad decisions should also precede millwork shop drawings. Pocket depth, fascia concealment, and keypad reveals are finish issues as much as technical ones. Waiting until the casework is fabricated transfers design risk onto the GC’s change-order log.
For lighting and shade specification timing, our architectural note on specifying Lutron from day one is useful reading for PMs who need to explain early engagement to owners and architects.
Inclusions, Exclusions, and Allowances
Clean bids separate:
- Included — design, pre-wire, devices listed on the schedule, programming, testing, owner training, documentation
- Excluded — owner-furnished TVs, decorative fixtures, furniture-mounted equipment, and finishes not yet selected
- Allowances — fabric for shades, camera counts still under design review, or outdoor audio zones pending landscape finalization
Vague allowances are where disputes grow. If an item is not selected, name the allowance basis and the date by which a decision is required to protect the schedule.
Custom residential low-voltage packages for serious South Florida homes commonly begin around $20,000 for defined pre-wire and control scopes and scale with estate size, shade counts, and automation depth. Publish the scope boundaries first; the number follows the drawings.
Coordination Practices That Keep the Schedule Intact
Builders who work with Martec typically see the same operating habits:
- Attendance at pre-construction meetings
- Single point of contact for RFIs related to low voltage
- In-house Control4, Savant, and Lutron programming—no third-party scheduling dependency
- Permits pulled by the low-voltage contractor where applicable
- Full insurance and documented as-builts at completion
The GC’s interest is straightforward: one accountable trade, drawings that match the field, and a punch list that does not reopen walls.
How to Write the Scope Language Into the Bid
When soliciting or writing the low-voltage portion of a custom home bid, language similar to the following keeps expectations aligned:
- Provide complete low-voltage design and installation for structured cabling, network electronics, lighting control, motorized shades, automation, distributed audio/video infrastructure, and security pathways as shown on drawings.
- Coordinate with electrical for power feeds and with millwork for shade pockets and equipment rooms.
- Furnish keypad and device schedules tied to interior finish selections.
- Program and commission systems; provide owner orientation and a documentation package at substantial completion.
- Attend scheduled coordination meetings and maintain as-built records.
Point the owner’s design team to the Lutron lighting and shades and home automation pages when they need clarity on platform options without expanding the GC’s meeting load.
Closing
A South Florida custom home bid that leaves low voltage undefined is not saving time. It is deferring decisions into the most expensive phase of the job. Define the systems, require drawings, assign one responsible contractor, and schedule engagement before rough-in.
Martec Technologies works the way GCs work: documented process, clean specs, and accountability from pre-wire through punch list across Miami-Dade, Broward, and Palm Beach.
Call 786.383.3829, or submit a project inquiry at gomartec.com/builders/.