Poor indoor signal has killed deals, delayed emergencies, and frustrated tenants in buildings across the country. If you're dealing with dead zones, dropped calls, or slow data in a large facility, DAS small cell installation coverage is likely the solution your property needs. Here's what you need to know before hiring anyone.
What Are DAS and Small Cells — and How Are They Different?
Both technologies extend cellular coverage into areas where macro towers can't reach, but they work differently.
Distributed Antenna Systems (DAS) use a network of small antennas spread throughout a building or campus, all connected to a central signal source — either a carrier-provided signal (active DAS) or a local amplifier (passive DAS). They're typically used in venues over 500,000 square feet, hospitals, stadiums, and high-rise buildings.
Small cells are compact, self-contained cellular nodes — think of them as miniature cell towers — installed on walls, ceilings, or utility poles. They're ideal for targeted coverage gaps in mid-size offices, hotels, warehouses, or outdoor areas where a full DAS buildout would be overkill.
The right choice depends on your square footage, carrier requirements, budget, and how many simultaneous users you need to support.
Common Scenarios That Require These Systems
- Hospitals or healthcare campuses with thick concrete walls blocking signals
- Sports arenas and convention centers with thousands of simultaneous users
- Underground parking structures with zero macro signal penetration
- Multi-tenant office buildings where tenants demand reliable service as part of their lease
- Industrial warehouses with metal construction that kills RF signals
The Installation Process: What to Expect
A professional DAS or small cell deployment follows a structured process. Rushing any step leads to poor performance or expensive rework.
1. RF Survey and Design A qualified RF engineer walks your facility and uses spectrum analyzers to map existing signal levels. They identify dead zones, interference sources, and coverage targets. This typically takes one to three days for a mid-size building.
2. Carrier Coordination For active DAS, you'll need formal agreements with one or more carriers (AT&T, Verizon, T-Mobile) to connect to their network. This process alone can take 60–120 days. Some carriers charge interconnection fees; others subsidize installations in high-traffic venues.
3. Infrastructure and Cabling Coaxial cable, fiber, or Cat6 is routed through conduit throughout the building. Antenna placement is mapped to achieve overlap coverage without interference. In large buildings, this is often the most labor-intensive phase.
4. Equipment Installation Head-end equipment, amplifiers, remote units, and antennas are mounted and connected. A small cell deployment is simpler — individual units are mounted and backhauled via fiber or licensed spectrum.
5. Testing and Optimization Engineers walk the space again with testing equipment to verify signal levels, handoff between antennas, and performance across all supported bands (including 5G if applicable). Expect at least one round of adjustments before final sign-off.
Key Questions to Ask Any Installer
Before signing a contract, push any prospective vendor on these specifics:
- Are you certified by the carriers you'll be working with?
- Do you handle carrier coordination and permitting, or does that fall on us?
- What's your warranty on labor and equipment?
- Will the system support 5G NR bands, or only LTE?
- How do you handle future capacity upgrades if user density increases?
- Can you provide references from similar facility types?
Avoid any contractor who can't speak to carrier relationships or skips the RF survey phase. These are not negotiable shortcuts.
Realistic Cost Ranges
DAS small cell installation coverage costs vary widely based on system type, building complexity, and carrier count:
- Passive DAS (single carrier): $2–$5 per square foot
- Active DAS (multi-carrier): $5–$15 per square foot, sometimes higher in complex venues
- Enterprise small cells (per unit): $1,500–$8,000 installed, depending on band support and backhaul requirements
A 100,000 sq ft office building with a multi-carrier active DAS system could run $500,000 or more fully installed and optimized. Smaller targeted deployments using small cells might cost $15,000–$40,000 for a few units covering a specific floor or wing.
Finding the Right Installer
This is a specialized trade. The gap between a competent DAS integrator and a mediocre one shows up in coverage dead spots, failed carrier audits, and systems that need to be rebuilt within two years. Carrier certifications, project portfolios, and references from similar deployments matter more than price alone.
Mercoly makes it straightforward to compare and find trusted DAS and small cell installation providers in one place, so you're not starting your search from scratch.
Start comparing qualified DAS and small cell installers today and get your facility the reliable coverage it needs.