Lighting is one of the most important decisions in a commercial tenant improvement or remodel. It affects how customers see your products, how comfortable employees are, how a restaurant feels at night and how safe people are moving through the space. For business owners in Scottsdale, Mesa, Chandler and Gilbert, good lighting design starts with a few basic principles.
Short answer: Commercial lighting design balances color temperature, color rendering (CRI), light levels and layers for how each space is used, then ties it together with dimming and controls. Offices and retail usually want bright, neutral light, while restaurants and bars often want warmer, dimmable scenes. Plan it early in the tenant improvement, alongside the electrical design.
Why does lighting matter in a commercial tenant improvement?
Lighting shapes first impressions and everyday comfort. Bright, even light helps people work and find what they need. Accent lighting draws attention to merchandise and brand features. Dimmable, warmer light makes a dining room feel relaxed. Good lighting also improves safety on stairs, in hallways and in parking areas. Because lighting touches ceilings, walls and controls, it needs to be planned before walls and ceilings close.
What color temperature works for commercial spaces?
Color temperature, measured in Kelvin (K), describes how warm or cool light looks:
- Offices, medical and retail: 4000K is a common choice, giving clean, neutral light that’s easy to work by
- Restaurants, bars and hospitality: warmer settings around 2700K to 3000K often feel more inviting, especially on dimmers
- Warehouses and back-of-house: neutral to cool light where visibility matters most
Our usual starting point is 4000K with dimming on color-selectable fixtures. A switch or setting on each fixture lets you go warmer in some areas without changing the product, which is handy when one space has both work areas and guest areas.
What is CRI, and why does it matter for business?
CRI (Color Rendering Index) measures how accurately light shows colors compared with natural light. Higher CRI makes merchandise, food, finishes and skin tones look more true to life. Low CRI can make a beautiful space look flat. It’s listed on fixture spec sheets, and it’s worth comparing when products, food or finishes are part of your brand.
How much light does a commercial space need?
It depends on the task. The Illuminating Engineering Society (IES) publishes recommended light levels for different kinds of spaces, from offices and classrooms to retail floors and corridors. Your lighting designer or electrician uses those recommendations, along with local energy code requirements, to choose fixture types, spacing and controls.
What are lighting layers in a commercial space?
- Ambient: general lighting from troffers, recessed or linear fixtures
- Task: focused light at desks, counters, prep areas and checkout
- Accent: track, wall grazing and display lighting for merchandise, art and brand walls
- Decorative: pendants and statement fixtures that set the look of the space
Layering reduces glare and lets each area be lit for its purpose. Our post on layered lighting explains the layers in more depth.
How do lighting controls work in commercial spaces?
Controls let you change the look of a space without rewiring. Commercial projects commonly use dimmers, scene keypads, occupancy and vacancy sensors, daylight sensors and time schedules, and energy codes often require some of these. We install Lutron lighting controls. On the Ponderosa House tenant improvement for a bar and restaurant in Old Town Scottsdale, we installed a Lutron lighting system with a hub controller so the owners can dim the lights and switch scenes as the night goes on.
When should lighting be planned in a tenant improvement?
As early as possible, alongside the architect’s plans and the electrical design. Lighting affects ceiling layouts, circuit counts, panel capacity, controls wiring and the permit set. See our commercial tenant improvements page and our guide to commercial tenant improvement electrical for the full process.
Commercial lighting design checklist
- Define how each area is used (work, retail, dining, storage)
- Choose color temperature by area, or use color-selectable fixtures
- Compare CRI where products, food or finishes matter
- Plan ambient, task, accent and decorative layers
- Choose controls: dimmers, scenes, sensors and schedules
- Confirm energy code and permit requirements
- Confirm circuit and panel capacity
When should I call an electrician?
Bring your electrician in during design. In an operating space, call us if lights flicker, fixtures buzz or feel hot, emergency or exit lights fail, or breakers trip. If you smell burning or see sparks, keep people away, turn off the breaker only if it’s safe and dry to reach, and call 911 for any fire. We answer emergency calls 24/7.
Serving Queen Creek and the East Valley
We design and install commercial lighting in Queen Creek, San Tan Valley, Gilbert, Mesa, Chandler, Florence, Scottsdale, Apache Junction and Gold Canyon, Sun Lakes, Tempe, Cactus Forest, Coolidge, Paradise Valley and Ahwatukee.
Frequently asked questions
What color temperature is best for commercial lighting?
Offices, medical and retail spaces commonly use 4000K for clean, neutral light. Restaurants and bars often prefer warmer 2700K to 3000K on dimmers. Color-selectable fixtures let you choose by area.
What is CRI in commercial lighting?
CRI measures how accurately light shows colors. Higher CRI makes merchandise, food and finishes look more true to life, which matters in retail and restaurants.
How do I know how much light my space needs?
The Illuminating Engineering Society publishes recommended light levels by space type. Your designer or electrician uses them, along with local energy code, to choose fixtures and spacing.
Do commercial spaces need lighting controls?
Most do. Energy codes often require controls like occupancy sensors, daylight sensors or schedules in many spaces, and dimmers and scenes make restaurants and retail more flexible.
What lighting controls do you install?
We install Lutron lighting controls, including systems with a hub controller for dimming and scenes, like the one at Ponderosa House in Old Town Scottsdale.
Planning a commercial space?
Henderson’s Electric Solutions LLC is a family-owned electrical contractor in Queen Creek, owned by Randy and Tori Henderson. Randy is our licensed electrician (ROC CR-11 #341452), and we’re bonded, insured and BBB accredited. Our CR-11 license covers both residential and commercial work.
Call Randy at (480) 430-2775 or request an estimate online. Regular hours are Monday through Friday, 6 AM to 6 PM, and we answer emergency calls 24/7. Solutions Only - No Excuses.