Retail TI electrical: lighting drives the scope.
Retail TI electrical centers on display lighting design, customer-facing aesthetics, and reliable POS infrastructure. Less code-complex than restaurant TI but design-heavier.
By Steven Lockhart · Reviewed by Alex Towery, C-10 #989290
Updated 2026-06-16
Retail TI electrical in Marin runs $15-$28 per square foot. Standard scope: extensive lighting design (display, accent, ambient, dressing rooms), POS dedicated circuits with surge protection, music/AV integration, dressing room electrical, store-room electrical, building signage power, security and camera circuits. Lighting design accounts for 40-60% of retail TI electrical scope — accent lighting, display spotlights, dressing room flattering light, ambient general lighting, exterior signage all integrated. Coordination with retailer's brand standards essential.
01What retail TI electrical includes.
Lighting design is the dominant scope element. Retail success correlates strongly with lighting quality — products look better, customers stay longer, dressing rooms are flattering, signage is visible. Modern retail lighting includes: general ambient lighting (LED panels or recessed downlights, 3000K-3500K color temperature), display accent lighting (track lighting or directional spotlights aimed at merchandise), dressing room lighting (flattering color temperature 2700K-3000K with high CRI for accurate color rendering), exterior signage power (channel letters, illuminated awnings), window display lighting (overhead spots or track to make window merchandise visible from outside).
POS and customer-facing electrical: dedicated 20A circuits for POS terminals (multiple if multiple checkout stations) with isolated grounds and surge protection, customer outlet locations (some retailers want customer USB charging), music system electrical (typically dedicated circuit for clean audio power), security camera circuits and DVR power, building alarm interface power. Storage and back-of-house: stockroom lighting (typically utility-grade), employee break room electrical, office space within store, receiving area lighting and outlets, signage maintenance outlets.
02Retailer-specific considerations.
Brand lighting standards
National and regional retailers often have specific lighting standards (color temperature, fixture types, mounting locations, light levels). Standards documented in tenant manual or design guide. Verify standards exist and incorporate during design; deviation requires retailer corporate approval and adds timeline.
Display and merchandising flexibility
Retail layouts change with seasonal merchandising. Track lighting (rather than fixed-position recessed) provides flexibility for repositioning displays without recurring electrician visits. Adds modest cost upfront ($15-$25 per linear foot of track vs $40-$80 per fixed downlight); saves significantly over store lifetime.
Signage and storefront
Exterior signage (channel letters, awnings, projecting signs) requires dedicated circuits, often with time-of-day control. Landlord scope vs tenant scope for storefront varies by lease; clarify during work letter review. Signage power runs typically dedicated 20A circuits, sometimes with photocell control.
03Common Marin retail TI scenarios.
Boutique retail (under 2,000 sq ft, premium positioning): focus on display lighting quality, dressing room flattering light, designer-specified fixtures, premium customer experience. Total electrical scope $35,000-$75,000 typical. Lighting design 50-60% of scope. National chain retail (2,000-5,000 sq ft): per corporate standards typically, less custom design, more standardized execution. Total scope $40,000-$110,000. Larger format retail (5,000+ sq ft): scaled-up scope with more lighting zones, more POS stations, more complex security integration. Total scope $80,000-$250,000+ for larger stores.
Working with retail interior designers and visual merchandisers: most premium retail TI involves interior designer scope on layout and lighting design vision. We collaborate with designer during electrical design — translating their vision into specific fixture selections, circuit layouts, control logic. Designer specifies aesthetic outcome; we deliver technical execution that matches vision while complying with code and budget.
Common questions.
How much does retail TI electrical cost?
Marin 2026: $15-$28 per sq ft. For 3,000 sq ft retail TI: $45,000-$84,000 typical. Variance drivers: lighting design ambition (display sophistication, accent lighting density), POS station count, signage scope, customer-facing technology (AV, customer outlets, etc.). Premium boutique retail pushes upper end; standardized national chain retail centers in mid-range.
How important is lighting in retail TI?
More important than most TI scopes. Retail sales correlate measurably with lighting quality — better-lit merchandise sells better, well-lit dressing rooms produce more conversions, well-lit storefronts attract more foot traffic. Lighting design quality is often the deciding factor between mediocre and successful retail spaces. For premium retail, lighting design typically requires specialist (lighting designer beyond electrician scope) for best results.
What about exterior signage?
Channel letter signs, illuminated awnings, projecting signs all require dedicated electrical circuits, often with photocell or time-clock control. Sign installation typically handled by sign contractor with our coordination on electrical scope (circuit, control, location). Landlord vs tenant scope for storefront varies by lease.
Can we change lighting layout after install?
Track lighting accommodates layout changes easily — move fixtures along track, add or remove fixtures, change beam patterns. Fixed-position recessed lighting requires electrical visits for changes. For retail spaces with seasonal merchandising, recommend track lighting in 60-80% of display zones, fixed recessed only in always-fixed locations (perimeter ambient, dressing rooms).
How do you handle pricing — flat fee or hourly?
Both, depending on scope. Routine service calls and predictable scope (panel replacement, EV charger install, transfer switch install, fixture replacement) are flat-fee quoted up front. Diagnostic visits and emergency scope are hourly because we don't know what we'll find. Either way, you get a written quote before work starts on anything significant, and we don't proceed beyond the quote without your sign-off.
How quickly can you schedule?
Depends on scope and season. Emergency dispatch: same-day across Marin County (1-3 hours business hours, 1-4 hours after-hours). Same-day standard service: 3-6 hours from call when capacity allows; otherwise next business day. Scheduled service work: 1-3 weeks typical. Larger projects requiring permits and PG&E coordination: 4-12 weeks depending on scope. We're upfront about timeline at the quote stage.
What warranty do you offer on work?
Our standard residential warranty: 2 years on labor, manufacturer warranty on parts (varies by product — typically 1-10 years). Major installs (panels, generators, EV chargers) often have longer manufacturer warranties (5-10 years). If there's an issue with our work in the warranty period, we come back and fix it at no cost. We also stand behind work past warranty — repeat customers and referrals matter more than a transactional fix.
Are you licensed and insured?
Yes. California State License Board C-10 Electrical Contractor #989290, in good standing. Carry general liability insurance and workers' compensation insurance as required by California law. Bondable on projects requiring it. Happy to provide proof of insurance to clients or property managers on request. License lookup: cslb.ca.gov.
Talk to a licensed electrician in Marin.
Family-run, C-10 #989290, 20+ years in the trade. Honest scoping, fair pricing, work that lasts.