Commercial Interior Design & Renovation Cost
Soho Office Design and Build by Mammoth, Breakout Area for Bond St
Photography by Joe Kramm
How to Budget a Commercial Office Renovation
In the world of design and construction, the term commercial space refers to real-estate in which business is transacted and includes office buildings, corporate headquarters, private office spaces, and co-working spaces. The end users of these spaces are business owners and their employees and clients – people who spend, on average for a full-time professional, the same amount of time in the office as they do sleeping per day. The people who design and build these spaces have significant expertise in commercial settings – they know how to allocate space, select materials of the appropriate, commercial grade, quality, and navigate regulatory requirements.
When planning and budgeting for the renovation of commercial spaces, one can of course calculate cost per square foot – we’ve seen between $30 and $300 per square foot used depending on location and requirements. But by breaking down the project scope of work and considering the needs of each end user, it’s possible to develop a more sophisticated and more accurate budget. As anyone who has ever done renovation projects knows, the more information you have from the start, the better you can plan and the better the overall process.
Cost Per Employee: Workstations and Individual Spaces
As designers and builders, we start by thinking about a typical employee – they enter the space on a daily basis, possibly with a keycard or app set up by an AV or IT professional, open a door branded with the company’s logo, and turn on the lights in their work area. They’ll sit down, in what is ideally an ergonomic chair, at a desk outfitted with power for their computer, possibly a telephone, and a filing or storage cabinet. For this basic setup, an appropriate budget is $1,500 to $2,000 per employee. And to achieve this setup we’ll need to coordinate with an on-site AV or IT team, possibly a security vendor, our lighting and furniture vendors and our electrician.
Soho Office Design and Build by Mammoth, Open Office for Bond St
Photography by Joe Kramm
Break-Out Room Renovation Cost
Now let’s think about that employee’s workflow. They spend a certain number of hours in their workspace, but they may also need to collaborate with others. A few times per week, they head to a break-out room where they can share ideas in small teams, sitting at 3 or 4 person tables and making use of whiteboards (physical or digital). The breakout room provides privacy for the team and keeps the sounds of their work from disturbing other employees - that might be achieved by constructing solid walls, or, to make sure that the room has access to natural light, glass partitions. We’ll budget $2500 for procurement for a table, chairs, lighting and accessories, and for construction costs - $50/sf for drywall partitions and a solid, painted door, or $150/sf for a glass partition and glass door, and $3000 for lighting and accessories installations. That’s $21,500 for a 10x10 room with solid partitions or $35,500 with glass.
To achieve a distinct, high-end break-out space in our project for a web development company in Manhattan, we used combination of glass partitions and solid oak doors, at a cost of $28,000 per room.
Conference Room Renovation Cost
On specific days, the employee may gather with a larger group and receive clients in a conference room. The conference room will incorporate branding and other elements that help to reinforce the firm’s vision and message, putting a best foot forward for existing and potential clients. Like the break-out room, it will provide privacy and may even utilize sound attenuating materials like carpeting and felt to keep the sounds of the meeting from echoing or disturbing others in the office.
Let’s assume we are building an 18x20 conference room that will hold a table and chairs for 12 people. To start, we’d budget $250 per chair, $8000 for a conference table and $2500 for lighting and accessories, plus $2500 for signage. To improve the acoustics, we’d budget $25/sq ft for felt or other sound absorbing wall coverings and $65/yard for high quality carpeting. We can’t forget the tech here - an effective conference room should be outfitted with conference calling and group Zoom capabilities - so we’ll set aside $7500 for a basic setup, at minimum. All in, including labor costs, our conference room might cost $65,000 for a room with solid partitions or $95,000 with glass.
Soho Office Design and Build by Mammoth, Kitchenette for Bond St
Photography by Joe Kramm
Soho Office Design and Build by Mammoth, Conference Room for Bond St
Photography by Joe Kramm
HVAC Cost for Commercial Offices
But getting back to basics, it’s July in NYC, and 12 employees that are attending a Zoom meeting in the new conference room are going to want some air conditioning! Does the building provide HVAC? Does the system distribute air in a way that syncs up with our redesign or will we need to extend the ductwork to that space? If there is existing central air, but we need to relocate some minor ductwork or registers, we’ll add a budget of $5,000. If no such system exists, we’d recommend confirming with the landlord whose responsibility it is to put an energy-efficient one in - as this can be a big ticket item of easily $100,000 or more.
Amenity Spaces: Kitchenette, Phone Rooms, Mother's Room
To help our clients attract and retain top talent, we often recommend adding amenity spaces that can help to make the workplace more inviting and comfortable. For example, every thoughtful office should have a Kitchenette with running water and refrigeration, a place for employees to take private calls and Zooms and a mother’s room where employees or visitors can comfortably and hygienically express breast milk or breastfeed. The total construction budget for these rooms combined starts at $20,000.
Small offices or start-ups that are focused on quickly creating a usable office space for immediate collaboration without making a large investment will benefit from the space planning input of a solid interior design team as well as their sourcing capabilities. Leave it to the professionals to know how to stretch a budget and shorten renovation timelines by embracing reconfigurable or agile designs that incorporate moveable furniture or partitions and allow for multi-functionality. Imagine a conference room that can be divided in half by a moveable partition and become two break-out rooms, or a Kitchenette with tables that double as eating spaces and collaborative work tables, serving multiple functions, without square footage going to waste. As designers and builders, we strongly believe that it’s our responsibility to help clients manage the project cost and to avoid additional costs wherever possible.
Commercial Interior Design Fees in NYC
The project budget wouldn’t be complete without contemplating project soft costs such as interior design fees and professional fees. What will the design firm charge? Will they bill at an hourly rate or offer a flat fee as their primary pricing model? Who will provide project management services and at what cost? Are there markups on procurement? Hourly rates for design services can average $200/hr, with flat fees in the tens of thousands of dollars, so this won’t be an insignificant cost. Consultants such as mechanical, electrical or acoustical engineers may be needed on your interior design project as well. In New York City, expect to spend anywhere from 7% to 20% of the construction cost for commercial interior design services and consultant fees all-in.
How to Choose the Right Commercial Design-Build Team
For your office renovation, select a professional team that is familiar with commercial building typologies, tenant build-out processes, landlord approvals processes and whose work speaks to your aesthetic preferences and can meet the needs of your brand. Speak with multiple firms and ask them what they know about the specific building codes for your space and what their design plans, or floor plans, will address, or not. Find out if they will handle HVAC design in-house, or if consultants are required. Tell them upfront, and as clearly as you can, what your aesthetic goals are and the total cost budget you are working with. And remember, if you’re looking for high-quality upgrades, or working with a raw space that needs a significant remodel, expect higher pricing and renovation costs.
Frequently Asked Questions About Commercial Renovation Costs in NYC
Q: How much does it cost to renovate a commercial office in NYC? A: Costs range from $30 to $300 per square foot depending on location, scope, and finish level. A more accurate approach is to budget by scope: $1,500–$2,000 per employee workstation, $21,500–$35,500 per break-out room, and $65,000–$95,000 per conference room, plus soft costs of 7–20% of the total construction budget.
Q: How much do commercial interior design fees cost in NYC? A: Design fees typically run between 7% and 20% of the total construction budget, all-in, including consultants. Hourly rates for design services average around $200/hr, though many firms also offer flat-fee arrangements.
Q: Is it cheaper to use solid or glass partitions in an office renovation? A: Solid drywall partitions cost around $50/sf, while glass partitions run approximately $150/sf. For a 10×10 break-out room, that's a difference of roughly $14,000. Glass is more expensive but preserves access to natural light, which can meaningfully impact employee wellbeing and productivity.
Q: Does my landlord have to pay for HVAC in a commercial renovation? A: It depends on your lease. In NYC, responsibility for HVAC can fall on either the tenant or the landlord. Before budgeting, confirm with your landlord in writing who is responsible, especially for new system installations which can cost $100,000 or more.
Q: What amenity spaces should a modern office include? A: At minimum, a well-designed office should include a kitchenette with running water and refrigeration, a private phone/Zoom room, and a mother's room. These combined start at around $20,000 and play a meaningful role in attracting and retaining talent.
Q: How do I keep my commercial renovation on budget? A: Start with a clear scope tied to how employees actually use the space rather than a blanket cost-per-sqft estimate. Work with a design-build team experienced in commercial tenant build-outs, share your total budget upfront, and consider flexible design strategies like moveable partitions and multi-functional furniture to get more out of every square foot.
Q: Do I need an engineer for a commercial office renovation in NYC? A: Depending on the scope, yes. Mechanical, electrical, and acoustical engineers may be required, particularly for HVAC design, significant electrical work, or spaces with specific acoustic requirements like conference rooms. Your design firm should be able to tell you upfront which consultants your project will need.
Q: How long does a commercial office renovation take in NYC? A: This depends on scope and landlord approval timelines. A straightforward tenant fit-out can take 3–6 months from design through construction. Larger or more complex projects, or those requiring significant building approvals, can take considerably longer. Ask your design-build team for a realistic timeline before committing to a move-in date.