DAS Installation Services for New Construction Projects in None
Integrating distributed antenna systems during new construction is roughly half the cost of retrofitting the same building after move-in and produces materially better coverage outcomes. JB Technologies works with developers, GCs, and design teams from schematic design through carrier-acceptance testing, modeling donor signal, sizing head-end equipment, coordinating LOAs with Verizon, AT&T, and T-Mobile, and pulling cable on the GC's schedule rather than as an afterthought. We design both passive single-source and active multi-carrier DAS, scaled to the building.
Local context, United States
Designing DAS into a new building is meaningfully different from retrofitting one. The economics favor early integration: cellular-DAS pulled alongside the data backbone runs roughly $0.75-$1.50 per square foot for a passive system and $2.50-$5.00 per square foot for a fully active multi-carrier topology, versus 2-3x those numbers if you have to come back after the ceiling grid is closed. Modern construction trends, Low-E spectrally selective glass, post-tensioned concrete floor plates, mineral-wool insulation, energy-code-driven envelope tightening, all attenuate cellular signal more aggressively than buildings from the 1990s and earlier, which is why even well-located new buildings now routinely need engineered indoor coverage to perform at -85 dBm or better. JB Technologies designs to that bar, runs iBwave or Ranplan models pre-construction, coordinates Letters of Authorization with each carrier when active head-ends are involved, and hands the GC a closed-out commissioning package with field-test data for AHJ and tenant review.
Why Choose JB Technologies for DAS in None?
- Certified Nextivity / CEL-FI QUATRA Integrator
- Measurement-Driven RF Site Surveys and iBwave Design
- Multi-Carrier Coordination, Verizon, AT&T, T-Mobile
- FCC Part 90 / Part 22 / Part 24 Signal-Source Compliance
- Commissioning Sweeps and As-Built Documentation
What is DAS?
A Distributed Antenna System (DAS) is an engineered network of indoor antennas that distributes commercial cellular signal throughout a building so that tenants, employees, and visitors get reliable voice and data coverage on Verizon, AT&T, and T-Mobile. DAS solves the in-building coverage problem in two architectures. Passive DAS uses a donor antenna on the roof feeding a bi-directional amplifier and a coax-and-splitter distribution grid, cost-effective for buildings under roughly 150,000 square feet with a usable outdoor donor signal. Active DAS converts RF to digital at a head-end and distributes over fiber to remote units, scaling cleanly to multi-million-square-foot venues and supporting all major carriers through carrier-grade signal sources. When the outdoor donor is strong and the building is mid-sized, a single-carrier CEL-FI QUATRA deployment is often the right answer; when the donor is weak, the building is large, or true multi-carrier parity is needed, an active DAS is the durable choice.
Where DAS makes sense
DAS is owner- and tenant-driven, it is the answer to "why does my phone drop calls inside this building?" rather than a building-code mandate. Typical DAS candidates:
- Large floor plates, offices, hospitals, and campuses over roughly 50,000 sq ft where a single booster cannot cover the area.
- Dense concrete or steel construction, hardened cores and rebar-heavy slabs attenuate cellular signal 15 to 25 dB.
- Impact-rated or low-E glass, modern energy-efficient and hurricane-impact glazing attenuates PCS and AWS bands 10 to 18 dB.
- Multi-carrier requirements, tenants and visitors on Verizon, AT&T, and T-Mobile all need parity coverage.
- Below-grade and parking levels, basements, parking decks, and tunnels where macro signal does not penetrate.
- Healthcare facilities, nurse-call workflows, BYOD clinical apps, and patient-experience requirements.
- Hotels and mixed-use towers, in-room and amenity-floor cellular is a guest-experience expectation.
- Warehouses and distribution centers, metal-clad envelopes and dock-door geometry that block macro signal.
- Higher-education buildings, libraries, residence halls, and student centers with dense user counts.
- Stadiums, arenas, and conference venues, capacity-driven deployments, not just coverage.
Typical system costs.
DAS pricing varies with building size, donor-signal strength, carrier mix, and design topology. Two rough ranges hold across most commercial work:
Installed Cost Ranges
- Passive DAS, $0.75 to $1.50 per square foot for single-carrier or limited multi-carrier deployments with a clean donor signal, typical of mid-sized offices and mid-rise residential.
- Active multi-carrier DAS, $2.50 to $5.00 per square foot, driven by remote-unit count, fiber backbone length, carrier signal-source coordination, and AHJ requirements. Hospitals, stadiums, and campus deployments live in this range.
- RF site survey and design package, typically $1,500 to $5,000 depending on building footprint and the number of carriers in scope.
- Factors that drive cost:
- Donor signal strength, weak outdoor RSSI may force a tower-mounted amplifier, an off-air bi-directional amp upgrade, or a small-cell signal source.
- Building materials, concrete, low-E glass, impact glazing, and metal cladding each shift the design.
- Carrier mix, single-carrier QUATRA units are cheaper than tri-carrier active head-ends, and each added carrier requires its own Letter of Authorization.
- Retrofit vs new construction, pulling fiber and coax in finished spaces costs materially more than rough-in during the shell stage.
Permitting and Carrier Coordination
- Electrical and low-voltage permits, required in most jurisdictions for head-end power and cable distribution.
- Carrier Letters of Authorization (LOAs), active DAS using signal sources from Verizon, AT&T, or T-Mobile requires per-carrier LOAs and RF-emissions disclosure under FCC Part 90, Part 22, and Part 24.
- FCC signal-booster registration, consumer-class boosters must be registered with the operating carrier; commercial Part 20.21 systems are coordinated upfront.
Commissioning and Ongoing Support
- Commissioning sweeps, downlink and uplink RSSI measured at design points, exported to the building owner and the AHJ when applicable.
- Annual coverage verification, recommended after major tenant fit-outs, antenna relocations, or carrier band-plan changes.
- Warranty and remote monitoring, QUATRA and most active DAS head-ends ship with cloud monitoring; JBT maintains active alarms through a service agreement.
Key Takeaways
- Plan during shell construction, rough-in for fiber and coax pays back many times over versus a finished-space retrofit.
- Match the topology to the building, passive for smaller buildings with good donor, active for large or multi-carrier requirements.
- Confirm carriers early, the carrier mix dictates equipment selection, LOAs, and design timeline.
New construction DAS frequently asked
At what point in a new construction project should DAS be designed in?
DAS should be scoped during schematic design, before the ceiling grid and shell close out. JB Technologies models donor signal and sizes head-end equipment early, then pulls low-voltage cable on the GC's normal construction schedule rather than as a change order after occupancy. Integrating DAS during new construction runs roughly half the cost of retrofitting the same building after move-in.
What rough-in does the general contractor need to provide for DAS during shell construction?
Pathways for the fiber or coax backbone between the head-end location and each floor's antenna distribution, plus electrical circuits for head-end equipment, coordinated during MEP coordination alongside the data backbone rough-in, not added back in after the ceiling grid is closed.
When do carrier Letters of Authorization need to start for a new-construction active DAS system?
As soon as an active, multi-carrier topology is confirmed. JB Technologies coordinates Letters of Authorization with Verizon, AT&T, and T-Mobile alongside the design and permitting phase so carrier sign-off isn't a bottleneck once equipment is ordered.
Does adding DAS to the scope delay the GC's construction schedule?
Not when it's scoped at schematic design. JB Technologies runs the RF site survey and iBwave or Ranplan design modeling in parallel with the GC's design development phase, then installs on the normal low-voltage trade schedule.
Should a new building with a good donor signal still plan for DAS?
Yes. Modern construction trends like Low-E spectrally selective glass, post-tensioned concrete floor plates, and energy-code-driven envelope tightening attenuate cellular signal more than older buildings, so even well-located new construction routinely needs engineered indoor coverage to perform at -85 dBm or better.
Tell us about your DAS project
Building address and a rough floor plate is enough to start. We'll respond within one business day with a probable DAS topology, donor-signal expectations, and a budget range.
Get a cellular coverage assessment for your None project.
Send the building address and a rough floor plate; we'll come back with a probable DAS topology, donor-signal expectations, and a budget range within one business day.