The Warehouse That Looked Great and Failed on Day One
A DP and producer scout a location for a 3-day shoot in a warehouse. They visit at 4:00 PM, look at the space, and approve it based on aesthetics. The brick walls have texture. The large windows provide beautiful natural light. On the first shoot day at 10:00 AM, they discover 5 technical problems.
The warehouse has only 2 household circuits at 15 amps each, providing 1,800 watts per circuit. Their lighting package draws 4,000 watts. They trip the breaker on the first take and need a generator at $300 per day, which they did not budget. The large windows face west, so the light is beautiful at 4:00 PM but harsh and direct at 10:00 AM. The scene is scheduled for 10:00 AM and the light is unusable. The warehouse sits next to a freight rail line with trains passing every 45 minutes during business hours, each taking 3 minutes, making audio recording impossible during passes. There is no parking, so load-in takes 90 minutes instead of 30. There is no cell signal, so the producer cannot coordinate deliveries.
Not completing the technical checklist creates on-set problems that cost time and money. The 5 technical failures on this warehouse added $1,800 in unbudgeted costs over 3 days.
This post covers the technical checklist beyond aesthetics: power, natural light, noise, parking and access, and cell signal. The data draws from ASC location scouting guidance, AICP location guidelines, and 2026 rental and equipment pricing.
The Five Technical Checklist Items
A location scout has 2 phases: aesthetic evaluation (does it look right?) and technical evaluation (can we shoot here?). The technical evaluation has 5 checklist items.
Power availability. Count the circuits. Each household circuit is 15 amps, providing 1,800 watts maximum, or 1,440 watts continuous under the NEC 80 percent rule for loads running 3 hours or more. A 20 amp circuit provides 2,400 watts maximum, or 1,920 watts continuous. Check the breaker panel: how many circuits are available, and are they dedicated or shared with other tenants? Calculate total available wattage: circuits multiplied by amperage multiplied by 120 volts. Example: 4 circuits at 15 amps times 120 volts equals 7,200 watts maximum, or 5,760 watts continuous. Compare to the lighting package wattage. If the package exceeds available wattage, rent a generator. A 20 kW diesel generator runs $150 to $250 per day in 2026. Check for 3-phase power in industrial buildings, which provides more power but requires a distribution box.
Natural light direction and timing. Determine window orientation using a compass or sun tracking app. North-facing windows provide consistent, soft light all day. South-facing windows provide direct sun all day, varying by season. East-facing windows provide direct sun from sunrise to approximately 11:00 AM. West-facing windows provide direct sun from approximately 2:00 PM to sunset. Visit the location at the same time of day as the planned shoot. The light at 4:00 PM is different from the light at 10:00 AM. Use the Exposure Calculator to measure the light level. Use Sun Surveyor ($9.99 one-time) or Sun Seeker ($6.49 to $11.99) to calculate the sun's path. ASC's Shot Craft column recommends Chemical Wedding's Helios app ($19.99 per year) for cinematographers.
Noise sources. Listen for HVAC systems, traffic, trains, airplanes, construction, and neighbors. Turn off all noise sources and listen for 5 minutes. Record 30 seconds of room tone with a phone or recorder and listen back with headphones. If the noise is audible on the recording, it will be audible in the production audio. The target ambient noise floor for dialogue is 30 to 35 dB(A). Above 40 to 45 dB(A), mitigation or relocation is required. Check train and flight schedules. Note the frequency and duration of passes. The warehouse scenario above loses 7 percent of shooting time to train passes (3 minutes per 45 minutes).
Parking and access. Count parking spaces. Check loading access: can a truck back up to the door, or does equipment need to be carried 200 feet? Measure the load-in distance and estimate load-in time. A crew of 15 with a full grip and electric package needs 30 minutes to load in with parking at the door. The same crew carrying equipment 2 blocks needs 90 minutes. The 60-minute difference per day compounds across a multi-day shoot.
Cell signal. Test all carriers at the location. Check whether WiFi or wired internet is available. If the location has no cell signal, the producer cannot communicate with cast, coordinate deliveries, or call for emergencies. A Verizon 5G hotspot rents for $50 to $80 per day. A Starlink Mini kit rents for $60 to $150 per day. A bonded cellular system for larger productions runs $150 to $650 per day. A true cell signal booster like the WilsonPro Rapid Deploy Kit costs $2,999 to purchase.
Three Real-World Scenarios
The Warehouse That Fails All 5 Items
A warehouse with 2 circuits, west windows, train noise, no parking, and no cell signal. All 5 technical items fail. The production needs a generator ($300 per day), ND gel on windows ($50 for a partial roll of Lee 210), a sound plan pausing for trains (7 percent lost time), a loading crew ($200 per day), and a cell booster or hotspot ($50 per day). Total additional cost: $600 per day times 3 days equals $1,800. The technical problems cost $1,800 that was not budgeted.
The Office Space That Passes All 5 Items
An office space with 6 circuits (10,080 watts continuous), north windows providing soft consistent light, HVAC that can be turned off during takes, parking for 10 vehicles, and good cell signal on all carriers. All 5 technical items pass. No additional costs. The location works as-is. The producer saves the $1,800 that the warehouse scenario required.
The Warehouse With 3 Passes and 2 Fails
A warehouse with 4 circuits (5,760 watts continuous), west windows, infrequent train noise at night, parking for 5 vehicles, and weak cell signal. Three items pass, 2 fail. The production needs ND gel on the west windows ($50) and a 5G hotspot ($50 per day). Total additional cost: $50 plus $150 over 3 days equals $200. The technical problems are minor and affordable. The Budget Breakdown Calculator adds the mitigation costs to the location budget.
Technical Checklist Summary
The table below summarizes the 5 checklist items with what to check, how to check, failure costs, and when to walk away.
| Item | What to Check | How to Check | Failure Cost Per Day | When to Walk Away |
|---|---|---|---|---|
| Power | Circuit count, amperage, total wattage | Read breaker panel, calculate circuits x amps x 120V | $150 to $300 (generator rental) | Fewer than 3 circuits and no generator access |
| Natural light | Window orientation, light at shoot time | Compass, Sun Surveyor app, exposure meter | $50 to $200 (ND gel, additional lighting) | West windows with a morning shoot and no ND budget |
| Noise | HVAC, traffic, trains, planes, construction | 5-minute listen, 30-second room tone recording, schedule check | $200 to $500 (sound blanket, ADR, lost time) | Constant noise above 45 dB(A) that cannot be stopped |
| Parking and access | Space count, loading access, load-in distance | Count spaces, measure door-to-truck distance, time the walk | $100 to $200 (loading crew, extra time) | No parking within 2 blocks and a 15+ person crew |
| Cell signal | All carriers, WiFi availability | Test phone calls and data on all carriers at shoot time | $50 to $150 (hotspot or Starlink rental) | No signal, no internet, and no hotspot budget |
The failure costs add up. A location that fails 3 of 5 items can cost $400 to $1,000 per day in mitigation. Over a 3-day shoot, that is $1,200 to $3,000 in unbudgeted expenses. The 30 minutes spent on the technical checklist prevents these costs.
How to Run a Technical Location Scout
- Schedule the scout at the same time of day as the planned shoot. The light and noise at the shoot time are what matter, not the light and noise at the scout time. If the scene shoots at 10:00 AM, scout at 10:00 AM.
- Bring a scout kit. Camera for reference photos, light meter for exposure, compass or sun tracking app for window direction, phone for cell signal test, decibel meter app for noise measurement, tape measure for room dimensions and load-in distance, and a notepad. The Filmmakers Academy recommends a 10-piece kit including an Insta360 camera and a color meter.
- Check power. Open the breaker panel. Count the circuits. Note the amperage of each (15 or 20 amp). Calculate total available wattage: circuits times amperage times 120 volts. Apply the 80 percent rule for continuous loads. Compare to the lighting package wattage using the Lighting Power Calculator.
- Check natural light. Determine window orientation with a compass. Measure the light level with a meter. Use Sun Surveyor or Sun Seeker to calculate the sun's path through the shoot day. Use the Exposure Calculator to record the reading.
- Check noise. Turn off all noise sources including HVAC, music, and refrigerators. Listen for 5 minutes. Record 30 seconds of room tone with your phone. Listen back with headphones. Check train schedules and flight paths. Categorize noise as constant, intermittent, or impulse.
- Check parking and access. Count parking spaces. Check whether a truck can back up to the loading entrance. Measure the distance from the truck to the set. Estimate load-in time for your crew size.
- Check cell signal. Test voice calls and data on all carriers present at the shoot time. Check whether WiFi or wired internet is available. Note the results for each carrier.
- Take reference photos. Shoot in all 4 directions from the center of the space. Note the time of day on each photo. Photograph the breaker panel, the windows, and the loading entrance.
- Use the [Production Schedule Calculator](/tools/production-schedule) to plan the shoot day around the natural light window and noise constraints. If trains pass every 45 minutes, schedule dialogue scenes for the gaps and b-roll for the passes.
- Use the [Budget Breakdown Calculator](/tools/budget-breakdown) to add mitigation costs. Generator, ND gel, hotspot, loading crew, and sound blankets all belong in the location budget line.
Pro Tips and Common Mistakes
Pro Tip: Scout at the same time of day as the planned shoot. The light and noise at the shoot time are what matter. Scouting at a different time gives inaccurate information. The warehouse scenario above was scouted at 4:00 PM for a 10:00 AM shoot. The west windows looked beautiful at 4:00 PM and produced harsh direct sun at 10:00 AM.
Pro Tip: Record room tone and listen with headphones. Audible noise on the recording will be audible in the production audio. The recording reveals noise that the ear filters out. A 30-second recording on your phone catches HVAC hum, traffic rumble, and refrigerator cycling that you stop hearing after 2 minutes in the space.
Pro Tip: Calculate the total available wattage before approving the location. The lighting package wattage must be less than the available wattage. Exceeding the available wattage trips breakers and requires a generator. A 4,000 watt lighting package on 2 circuits at 15 amps (3,600 watts continuous) will trip the breaker on the first take. The Lighting Power Calculator handles this calculation.
Common Mistake: Scouting for aesthetics only. Aesthetics are half the evaluation. The technical checklist determines whether the location is shootable. Ignoring the technical checklist creates on-set problems that cost time and money. The warehouse scenario cost $1,800 in unbudgeted mitigation over 3 days.
The fix: Run all 5 checklist items on every scout. A location that passes aesthetics but fails 3 or more technical items is not a viable location unless the mitigation budget covers the failures.
Common Mistake: Not checking the window orientation. West-facing windows look beautiful at 4:00 PM but produce harsh direct sun at 10:00 AM. The shoot time is what matters, not the scout time. A $50 roll of Lee 210 ND gel mitigates the problem, but only if you know about it before the shoot day.
Common Mistake: Not listening for noise sources. Noise that is not noticed during the scout becomes a production audio problem on set. The sound mixer cannot fix traffic, trains, or construction in post. ADR costs $200 to $500 per hour and degrades performance quality. The 30-second room tone recording catches what the ear misses.
Frequently Asked Questions
What should I check when scouting a film location?
Check 5 technical items: power (circuit count and total wattage), natural light (window orientation and light at shoot time), noise (HVAC, traffic, trains, planes, construction), parking and access (space count and load-in distance), and cell signal (all carriers and internet availability). Run all 5 on every scout. A location that passes aesthetics but fails 3 or more technical items needs mitigation budget or a different location.
How do you evaluate power at a location?
Open the breaker panel and count the circuits. Note the amperage of each (15 or 20 amp). Calculate total available wattage: circuits times amperage times 120 volts. Apply the 80 percent NEC rule for continuous loads to get the usable wattage. Compare to the lighting package wattage. A 15 amp circuit provides 1,440 watts continuous. A 20 amp circuit provides 1,920 watts continuous. If the lighting package exceeds available wattage, rent a generator at $150 to $300 per day for a 20 kW diesel unit.
How do you check for noise at a location scout?
Turn off all noise sources including HVAC, music, and refrigerators. Listen for 5 minutes. Record 30 seconds of room tone with your phone and listen back with headphones. The target ambient noise floor for dialogue is 30 to 35 dB(A). Above 40 to 45 dB(A), mitigation or relocation is required. Check train schedules, flight paths, and nearby construction. Categorize noise as constant, intermittent, or impulse.
What is a technical location scout?
A technical location scout is the second phase of location evaluation, after the aesthetic scout. It evaluates whether a location can physically support a shoot across 5 categories: power availability, natural light direction and timing, noise sources, parking and access, and cell signal. The technical scout determines whether the location is shootable and what mitigation costs to add to the budget. ASC's Shot Craft columns cover sun tracking and power planning. AICP's 2026 bidding guidelines and the Teamsters Local 399 Location Scout MOA (effective June 28, 2026, at $957.58 per day) define the professional scout framework.
Related Tools
The Exposure Calculator measures the light level at the location during the scout and records the reading for the lighting plan. The Production Schedule Calculator plans the shoot day around the natural light window and noise constraints. The Color Temperature Calculator helps evaluate mixed light sources at the location, especially when daylight from windows mixes with practical tungsten fixtures.
For the lens selection that pairs with the location dimensions, Location Scout Lens Calculator Workflow covers the field-of-view planning.
The Technical Checklist Prevents On-Set Problems
The technical location scout has 5 checklist items: power, natural light, noise, parking and access, and cell signal. Scout at the shoot time. Bring a scout kit. Calculate available wattage. Record room tone. Check window orientation. Count parking spaces. Test cell signal. The 30 minutes spent on the checklist prevents $1,800 in unbudgeted mitigation costs on a 3-day shoot.
Some technical problems can be mitigated with a generator, ND gel, or a hotspot. Calculate the mitigation cost and add it to the budget. A location that fails 3 or more items may cost more to mitigate than a different location that passes all 5. The 2026 rental rates in this post reflect US market pricing from LatestCost, CountBricks, and film rental house rate cards. Regional pricing varies.
What technical problem did you discover on set that the checklist would have caught during the scout?
