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Tenant Improvement Services In Southern California
Tenant Improvement refers to the remodeling of a space according to the requirements of the businesses being established there including offices, retail spaces, restaurants, medical suites and warehouses modified for practical use. Typically, tenant improvement costs can range anywhere from $30,000 to $250,000+ depending on the size of the project and whether or not there is a need for new systems in the building. On an average, TI projects take anywhere from 2-5 months from start to finish, depending on your landlord’s approval process and permit requirements. ACT Construction has been doing tenant improvement construction projects all throughout Chino Hills and Southern California for over 26 years.
A business goes for a tenant improvement since having a space that fits your operations makes a big difference in how you operate as a company and how customers perceive your brand. The old layout of the building or just a generic shell won’t suit a new business in most cases and therefore a TI will do much more than just refurbishing the floor and paint, but also modifying the space to cater to your operations.
What is an Tenant Improvements?
Tenant improvements refer to construction work inside a commercial property, tailored to suit the operational needs of the tenant. This includes layout modifications, wiring and lighting, flooring, partitioning, bathrooms, and finishes – anything done between the walls of the building up to a point where you have a usable space for your business. The extent of tenant improvements is generally negotiated between the landlord and the tenant during the lease process, and it is one of the few ways for a business to design a space around its operations.
Signs You Need a Tenant Improvement
A build-out isn’t always the first thing on a new tenant’s mind, but here are the situations that most often bring business owners to us first:
- You’ve just signed a new lease. A vanilla shell or a layout built for the previous tenant rarely matches your workflow on day one.
- Your current layout doesn’t support your team. Cramped workstations, poor traffic flow, or a lack of meeting space slow people down every single day.
- Your space doesn’t reflect your brand. Customers and clients form an impression the moment they walk in. A dated or mismatched interior undercuts that.
- Your business has outgrown its footprint. Adding staff, equipment, or inventory storage often means reconfiguring the space rather than moving entirely.
- You’ve compared the cost of relocating. Moving to a new location means new lease negotiations, new signage, new address changes, and downtime. A well-planned TI is often the more efficient path.
If several of these apply, the next step is figuring out which type of build-out fits your lease and your business.
Types of Tenant Improvements We Build
- Office build-outs. Workstations, private offices, conference rooms, and break areas designed around your team’s actual workflow.
- Retail build-outs. Storefronts, fitting rooms, checkout areas, and display layouts designed to move customers naturally through the space.
- Restaurant and food service TI. Kitchen layouts, dining areas, and back-of-house build-outs that meet health code and permitting requirements from the start.
- Medical and dental suites. Exam rooms, plumbing for treatment areas, and layouts that meet the specific code requirements medical tenants face.
- Warehouse and light industrial TI. Office pockets, mezzanines, and reconfigured floor plans within larger industrial shells.
Every build-out will be designed to suit your leasing agreement and building standards by your landlord so that the completed space passes all requirements the first time, avoiding any conflicts at the end of your tenancy period. In case you are also expanding your business into another location, we can design the two spaces simultaneously.
Design & Planning Considerations
A few decisions early in the process shape the whole project:
Landlord approval and lease terms. Most commercial leases require landlord sign-off on TI plans, and some define what happens to improvements at lease-end. We review your lease scope early so the design doesn’t run into approval problems later.
Base building systems. Whether the shell has adequate power, HVAC capacity, and plumbing stubs for your intended use affects both cost and timeline. We evaluate this at the start of design, not after construction begins.
Code requirements by use type. Restaurants, medical suites, and retail spaces each carry different occupancy, accessibility, and health code requirements. Planning for these upfront avoids costly redesigns mid-permit.
Working around lease timelines. Many tenants are on the clock, rent may start regardless of construction status. We plan the schedule around your lease start date so you’re not paying for space you can’t yet use.
Matching your brand. Finishes, signage areas, and layout should reflect your brand identity, not just meet code. We factor this into design from day one rather than treating it as a final layer.
Typical Tenant Improvements Investment Ranges
- Cosmetic TI (paint, flooring, lighting, minor layout): $30,000 – $75,000
- Standard Office/Retail Build-Out: $75,000 – $150,000
- Full Build-Out (new systems, plumbing, code upgrades): $150,000 – $250,000+
What Drives the Cost of a Tenant Improvement
The ranges above are a starting point. Your final number depends on:
- Square footage. Cost scales with space, but smaller build-outs carry a higher cost per square foot since permitting and mobilization costs don’t shrink with size.
- Use type. A basic office build-out costs less than a restaurant or medical suite, which require plumbing, ventilation, and code compliance specific to that use.
- Condition of the shell. A raw shell with no existing systems costs more to build out than a space with usable power, HVAC, and plumbing already in place.
- Code compliance requirements. ADA accessibility upgrades, fire sprinkler modifications, and occupancy-related code work add cost that varies by building and use type.
- Finish level. Builder-grade finishes cost less than custom millwork, branded storefronts, or high-end fixtures.
We provide a detailed, itemized estimate before construction starts, so both you and your landlord know exactly what’s being built and what it costs.
Accessory Dwelling Unit (ADU) Guide for Southern California Homeowners
01
FAM Promotions, Inc. DBA ACT Construction
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California Licensed General Contractor – License #883252
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Serving Southern California Since 1993
Our Tenant Improvement Process
- Free consultation. We walk your space and talk through your business needs, lease terms, and timeline.
- Design and permits. We draft plans, coordinate landlord approval, and file with the local building department.
- Approval. We track your permit application and manage any city or landlord requests for revisions.
- Construction. Our crew builds your space on the agreed schedule, with regular updates so you know exactly where things stand against your lease timeline.
- Final walkthrough. We inspect the completed build-out with you before handing over a space that’s ready to open.
Ready to start? Book a consultation and we’ll walk your space within the week to give you a realistic scope and budget.
Differences between Tenant Improvement and Whole House Remodeling
A tenant improvement is a commercial build-out inside a leased space, scoped around a lease agreement and landlord approval. A whole house remodel is a residential project on a home you own, with no lease terms or landlord sign-off involved. The two share a similar planning approach, coordinated design, phased construction, itemized estimates, but TI projects run on a lease clock and must meet commercial code requirements specific to the business use, while residential remodels are scoped around how a family lives day to day.
Why Businesses Choose ACT Construction
ACT Construction has operated as FAM Promotions, Inc. DBA ACT Construction since 1993, holding California General Contractor License #883252. Three decades in Southern California means we’ve built out offices, retail spaces, restaurants, and medical suites through multiple code cycles and permitting processes. A few things that set our process apart:
- One point of contact. You work with the same project lead from consultation through final walkthrough, not a rotating cast of subcontractors.
- Lease-aware scheduling. We plan construction around your lease start date and rent obligations, not just an internal build schedule.
- Transparent, itemized pricing. You and your landlord see exactly what’s being built and what it costs before construction starts.
- Licensed and insured. Every project is covered, and every permit is filed and tracked by our team.
Financing a Tenant Improvement
A tenant improvement will be financed by a landlord’s TI allowance, small business loan, financing for equipment or leasehold improvements, or from working capital. Given that a landlord’s TI allowance typically does not extend to the full requirements of a tenant improvement, it is imperative that one appreciates the gap between the TI allowance that you have from your lease and the true cost of the project well before the actual start of construction. It is important that a full tenant improvement involving new systems and/or code compliance requires additional financing besides the TI allowance, while a cosmetic improvement would fit within the TI allowance.
Common Mistakes Businesses Make With Tenant Improvements
Skipping landlord approval before design. Designing a full build-out before confirming what your lease allows can mean starting over. Confirm scope with your landlord first.
Underestimating the permitting timeline. Commercial permits, especially for restaurants and medical suites, can take 8-12 weeks in many Southern California cities. Many tenants don’t build this into their opening timeline.
Choosing finishes at the tail end of the job. Selecting flooring, fixtures, and branded finishes once construction is underway almost always causes delays. Locking these in during design keeps the project on schedule.
Overlooking base building capacity. Assuming the shell has enough power or HVAC capacity for your equipment, without checking, often leads to costly mid-project changes.
Frequently Asked Questions
Tenant Improvement Cost In California?
Typically, tenant improvement costs range from $30,000 to $150,000. For full build-outs involving new systems, plumbing, or code upgrades, costs can exceed $250,000, depending on square footage and use type.
How Long Does a Tenant Improvement Take?
Design and permitting typically take 6-10 weeks, longer for restaurants and medical suites. Construction itself takes 6-14 weeks depending on scope. In total, most TI projects take 2-5 months.
Do I need a permit for a tenant improvement?
Yes. Nearly all commercial build-outs involving layout changes, electrical, or plumbing require a building permit. We handle permit filing and tracking for every project.
Will my landlord need to approve the design?
In most cases, yes. Commercial leases typically require landlord sign-off on TI plans. We review your lease and coordinate approval as part of the design process.
Can I use my TI allowance to cover the full cost?
It depends on your lease and the scope of work. TI allowances often cover part of the cost, particularly for standard build-outs. We provide an itemized estimate early so you can see how far your allowance goes and plan for the difference.
Does the type of business affect the cost?
Yes. Restaurants, medical suites, and other specialized uses require plumbing, ventilation, and code compliance that a standard office build-out doesn’t, which increases both cost and permitting time.
Can I stay open during a tenant improvement?
It depends on scope. Cosmetic updates can sometimes be phased around business hours. Full build-outs involving systems work typically require the space to be closed during construction. We’ll map this out with you during design.
Do you handle projects beyond the interior build-out?
Yes. If your project also involves garage conversion into workspace or an ADU-style secondary structure on a mixed-use property, our team can scope that alongside your tenant improvement.
