Signing a lease for a new office is only the first step. Between the signed lease and move-in day sits the build-out: new walls, offices, conference rooms, lighting, data cabling, HVAC changes and finishes, all coordinated with the landlord, the building and the permit office.
An office tenant build-out in Chicago involves more parties and more rules than most business owners expect. Downtown high-rises have strict building requirements, suburban office parks have their own landlord standards, and every project has to work within a lease, a budget and a move-in date.
This guide explains how office build-outs work for business owners, office managers and growing companies leasing space in Chicago and the suburbs: what the work includes, how the lease affects the budget, what tenant improvement allowances cover, and how to keep the schedule on track.
An office tenant build-out converts leased space into a working office through new layout, MEP (mechanical, electrical and plumbing) changes, finishes and IT infrastructure. Cost depends on the condition of the space when you take it, how many private offices and conference rooms you need, HVAC and electrical changes, and building rules such as after-hours work. Review the landlord’s work letter and tenant improvement allowance before signing, bring a contractor in early to price the plan, and allow time for permit review.
Planning an office build-out? Call (708) 979-3298 or request a quote.
What Is an Office Tenant Build-Out?
A tenant build-out, also called a tenant improvement or TI project, is the construction work that customizes a leased commercial space for a specific tenant. For an office, this usually includes:
- Demolition of the previous tenant’s walls and finishes
- New framing for private offices, conference rooms, phone rooms and storage
- Ceiling, lighting and ductwork changes to match the new layout
- Electrical outlets, dedicated circuits and power for workstations
- Data and low-voltage cabling for networks, phones, security and audiovisual
- Break room or kitchenette plumbing
- Flooring, paint, doors, glass and millwork
- Fire alarm and sprinkler adjustments required by the new layout
If you are updating an office you already occupy, see our office remodeling service. A tenant build-out focuses on new leased space being prepared for move-in.
Understanding the Condition of the Space
The condition of the space when you take it shapes the entire budget. Landlords and brokers use a few common terms.
| Space Condition | What It Usually Includes | Build-Out Scope |
|---|---|---|
| Cold dark shell | Structure and basic building systems, little or no finished interior | Largest scope: almost everything is new |
| Gray shell | Basic utilities brought to the space, no finished interior | Large scope |
| White box or vanilla shell | Finished perimeter walls, basic ceiling, lighting, HVAC distribution and restrooms | Moderate scope focused on layout and finishes |
| Second-generation office | The previous tenant’s finished office, often with reusable offices and systems | Smaller scope if the layout fits your needs |
| Turnkey | Landlord completes the build-out to an agreed plan | Landlord manages construction, tenant approves design |
These terms are not used consistently across buildings. Always ask for a written description of what is included, and confirm it during a walkthrough.
The Lease Decides More of the Budget Than You Think
Before construction starts, the lease has already decided who pays for what. Pay close attention to three items.
The work letter
The work letter is the part of the lease that describes the construction. It explains what the landlord will provide, what the tenant is responsible for, who approves the plans, and which contractors may work in the building.
The tenant improvement allowance
A tenant improvement allowance is money the landlord contributes toward the build-out, often stated per rentable square foot. Read the details carefully:
- Which costs can the allowance cover: construction only, or also design, permits, cabling and furniture?
- How and when is it paid: upfront, in draws, or after completion?
- Does unused allowance disappear, or can it be applied to rent?
- Is there a deadline to use it?
Restoration clauses
Some leases require the tenant to remove improvements at the end of the term. A restoration clause can add cost years later, so understand it before designing the space.
Before you sign: Bring a contractor in to review the space and your planned layout. A preliminary price helps you negotiate the right allowance and avoid committing to a lease that does not cover the work you need.
What Drives Office Build-Out Cost
Office build-outs vary widely, but the budget is shaped by a predictable set of factors.
| Cost Driver | Why It Matters |
|---|---|
| Starting condition of the space | A cold shell needs far more work than a second-generation office |
| Number of private offices and rooms | Every wall adds framing, drywall, doors, lighting, HVAC and electrical |
| Glass fronts and partitions | Glass office fronts look open but are a premium finish |
| HVAC changes | New rooms often need new duct runs, diffusers and thermostats |
| Electrical and data | Dense workstations, server rooms and AV need added power and cabling |
| Break rooms and kitchens | Plumbing and appliances add cost, especially far from existing lines |
| Fire and life safety | Sprinkler heads and alarm devices must be adjusted to the new layout |
| Building rules | After-hours work, freight elevator scheduling and union requirements in some buildings |
| Finishes | Flooring, ceilings, lighting fixtures and millwork vary widely |
The most effective way to manage cost is to design the layout around the existing systems where possible, and to reserve premium finishes for client-facing areas such as reception and conference rooms.
Open Plan vs. Private Offices
The layout decision affects the budget more than almost any finish.
- Open plan: Fewer walls, fewer doors and simpler HVAC. Open layouts need careful planning for power, data and acoustics.
- Private offices: Each office adds walls, a door, lighting, a thermostat zone or diffuser, outlets and data drops.
- Hybrid layouts: Most companies now combine open workstations with focus rooms, phone booths and a few private offices.
Planning for how your team actually works, including hybrid schedules, helps avoid building more enclosed space than you need.
High-Rise Build-Outs in Downtown Chicago
Office buildings in the Loop, River North, the West Loop and Streeterville often have detailed contractor requirements. Common rules include:
- Certificates of insurance naming the landlord and property manager
- Noisy demolition and coring work limited to evenings or weekends
- Reserved freight elevator time for deliveries and debris removal
- Building approval of drawings before permit submission
- Coordination with building engineers for fire alarm, sprinkler and HVAC tie-ins
These rules affect both cost and schedule, so they should be included in the contractor’s pricing from the start. Our guide to Chicago high-rise building rules covers many of the same requirements from the residential side.
Suburban Office Build-Outs
Office parks and multi-tenant buildings in the suburbs usually have simpler logistics, more parking and easier daytime access. They still require landlord approval and municipal permits. Suburbs such as Oak Brook, Schaumburg, Naperville and Orland Park each have their own building departments and review processes.
Permits and Inspections
Most office build-outs require a building permit. In Chicago, permits are issued through the City of Chicago Department of Buildings. Suburban projects go through the local municipality.
Permit drawings typically show the floor plan, electrical, mechanical, plumbing and life safety changes. Inspections take place during rough-in and at completion before occupancy. Review times vary by scope and season, so permits should be planned into the move-in schedule from the beginning.
Learn more in our Chicago remodeling permit guide and south suburb permit timelines.
Do Not Forget IT, Security and Furniture
Construction is only part of the move-in. Several other items need to be coordinated with the build-out:
- Data cabling: Best installed while walls and ceilings are open.
- Internet service: Providers can take weeks to install service, so order early.
- Access control and cameras: Plan door hardware and wiring during design.
- Audiovisual: Conference room screens and video systems need power, data and blocking in the walls.
- Furniture: Workstation layouts determine where power and data are placed. Lead times for furniture can be long.
How Long Does an Office Build-Out Take?
Timelines depend on scope, permit review and building rules. A light refresh of a second-generation office can be completed quickly, while a full build-out of a shell space takes considerably longer. Typical phases include:
- Space planning and test fit
- Pricing and lease negotiation
- Construction drawings and landlord approval
- Permit review
- Demolition and rough-in
- Inspections
- Drywall, ceilings and finishes
- Final inspections, cleaning and move-in
Delays most often come from late design decisions, long lead time materials and permit review. Our article on in-house trades vs. subcontractors explains how coordinated trades help keep commercial schedules moving.
Office Build-Outs Beyond Traditional Offices
Many businesses need office-style space with specialized features, such as medical and professional offices, showrooms or mixed office and retail. AMG Proline also handles retail store remodeling and broader commercial remodeling across Chicago and the suburbs.
How to Keep Your Office Build-Out on Budget
- Price before you sign. A preliminary estimate helps you negotiate the tenant improvement allowance.
- Reuse what works. Existing offices, restrooms and ceilings can save significant money if they fit your plan.
- Limit walls. Every enclosed room adds cost across several trades.
- Focus premium finishes. Invest in reception and conference rooms, and keep work areas durable and simple.
- Get a fixed written price. See why we quote fixed written prices.
- Make design decisions early. Late changes are the most common source of added cost and delay.
If you are comparing contractors, our guide on how to choose a remodeling contractor in Chicago covers what to ask. You can also review completed work on our projects page.
Leasing new office space in Chicago or the suburbs?
Bring us in before you sign so your build-out budget is based on the real space.
Call (708) 979-3298
Request a Quote
Prefer email? Contact our team.
Office Tenant Build-Out FAQs
What is an office tenant build-out?
It is the construction work that customizes a leased office space for a new tenant, including layout changes, electrical, HVAC, data cabling, finishes and code work.
How much does an office build-out cost in Chicago?
Cost depends on the starting condition of the space, the number of offices and rooms, HVAC and electrical changes, building rules and finishes. A contractor review of your specific space and layout is the only reliable way to set a budget.
What is a tenant improvement allowance?
It is money the landlord contributes toward your build-out. The lease defines how much is provided, what it can be used for, and when it is paid.
What is a work letter?
The work letter is the section of the lease that describes the construction, including what the landlord provides, what the tenant pays for, and how plans are approved.
What does white box or vanilla shell mean?
It usually means a space with finished perimeter walls, a basic ceiling, lighting, HVAC and restrooms, ready for the tenant’s layout. Definitions vary, so confirm in writing what is included.
Do I need a permit for an office build-out?
Most office build-outs require a building permit. In Chicago, permits come from the Department of Buildings. Suburban projects require permits from the local municipality.
Why do downtown buildings require after-hours work?
Noisy work such as demolition and coring can disturb other tenants, so many high-rise buildings limit it to evenings or weekends. This affects schedule and cost and should be included in pricing.
Should I choose an open plan or private offices?
Open plans usually cost less because they need fewer walls, doors and HVAC changes. Most companies choose a hybrid layout with open workstations, a few private offices and small meeting rooms.
When should data cabling be installed?
During construction, while walls and ceilings are still open. Installing cabling after finishes are complete is more difficult and more expensive.
How long does an office build-out take?
It depends on the scope, permit review and building rules. A second-generation refresh moves faster than a shell build-out, where design approval and permits often take the most time.
Can you work in occupied office buildings?
Yes. We coordinate with property managers on access, insurance, elevator scheduling and after-hours work so other tenants are not disrupted.
Should a contractor review the space before I sign the lease?
Yes. An early review and preliminary price help you negotiate the tenant improvement allowance and avoid surprises after the lease is signed.
Move In on Schedule and on Budget
A successful office tenant build-out in Chicago starts before the lease is signed. Understand the condition of the space, read the work letter and allowance carefully, plan a layout that fits how your team works, and bring a contractor in early to price the plan.
AMG Proline builds and remodels commercial spaces across Chicago and the suburbs. Call (708) 979-3298 to plan your office build-out.
Categories
Office Tenant Build-Out in Chicago: Leases, TI Allowances, Costs and Timelines
Signing a lease for a new office is only the first step. Between the signed lease and move-in day sits the build-out: new walls, offices, conference rooms, lighting, data cabling, HVAC changes and finishes, all [...]
Salon Build-Out Cost in Salon Build-Out Cost in Chicago: What Drives the Budget Before You Sign a Lease: What Drives the Budget Before You Sign a Lease
Signing a lease for a new office is only the first step. Between the signed lease and move-in day sits the build-out: new walls, offices, conference rooms, lighting, data cabling, HVAC changes and finishes, all [...]
Whole-Home Remodeling in Chicago: How to Plan, Sequence and Phase a Multi-Room Renovation
Quick answer: A whole-home remodel updates several rooms or systems in one coordinated project instead of a series of separate jobs. It usually combines kitchens and bathrooms with flooring, lighting, layout changes, and electrical and [...]
Primary Bathroom Remodel in Chicago: Layouts, Showers, Vanities and Comfort Upgrades Worth Planning
Quick answer: A primary bathroom remodel turns the main bathroom off the bedroom into a private suite built around how two people get ready every day. Most primary bath projects center on five decisions: the [...]
