Guide

Office Build-Out vs. Renovation: What NYC Tenants Need to Know

Take a space as it is, refresh it or rebuild it. What each path involves, how long it takes, who usually pays and where the budget risk sits.

By Matthew DeRoseCo-Founder & CEO, Nomad GroupSeptember 11, 2026 · 6 min read

What you should know

  • The condition a space is delivered in decides most of the cost and schedule. Know which path you are on before you sign.
  • A test fit on each finalist shows whether a space works as is, needs a refresh or needs to be rebuilt.
  • Mechanical, electrical and plumbing work, permits and long-lead items are where schedules and budgets usually move.

Every office search eventually becomes a construction question. Can we use the space as it is? What would we change? What would it cost, and how long would it take? The answers depend on the condition of the space and on what your team needs, and they often decide which space is the better deal.

Space conditions, in plain terms

What you may be offered
ConditionWhat it means
Raw / shellLittle or nothing built. Structure, core and base systems, sometimes with previous work demolished.
White boxA clean, basic starting point: finished walls, ceilings and lighting, but no layout. Definitions vary by landlord.
Second-generationA previous tenant’s build-out, with offices, rooms and finishes in place, used as is or adapted.
PrebuiltA new installation built by the landlord to a general layout before a tenant is signed, usually unfurnished.
Furnished / plug-and-playBuilt and furnished, sometimes with cabling and IT in place.

Terms are used loosely. Ask exactly what will be there on the day the space is delivered.

Three paths: take it, refresh it or rebuild it

Take it as-is vs. refresh it vs. rebuild it
Take it as-isRefresh itRebuild it
What it involvesMove in with the existing layout; furniture and IT onlyPaint, flooring, lighting, some walls, rooms repurposedDemolition and a new layout, often with MEP changes
Typical fitPrebuilt, furnished or good second-generation spaceSecond-generation space that mostly worksRaw, white box or a layout that doesn’t work
ScheduleShortestModerateLongest
Design controlLowestSomeFull
PermitsRarelySometimes, depending on scopeUsually
Budget exposureLowestModerateHighest, and most sensitive to change
When it makes senseSpeed matters and the layout fitsThe bones work but the space needs to feel like yoursThe company needs a specific layout, or no built option fits

General comparison. Scope, building and landlord rules change the answer.

Start with a test fit

A test fit is a quick layout of your program, meaning your seats, offices, rooms and shared space, on a specific floor. It shows how well the space fits, what would need to change and, with early pricing, roughly what it would cost. Doing test fits on your finalists before the letter of intent is the best way to compare spaces that need different amounts of work.

What drives cost and schedule

  • Demolition. Removing an existing build-out adds cost and time, and can reveal conditions no one expected, particularly in older buildings.
  • Mechanical, electrical and plumbing (MEP). Moving or adding HVAC, electrical capacity, kitchens and restrooms is often the most expensive and time-consuming part of the work.
  • Permits and filings. In New York City, most work beyond minor alterations requires filings with the Department of Buildings. Your architect or expediter will confirm what your scope needs.
  • Long-lead items. Mechanical equipment, specialty lighting, glass and some finishes can take longer to arrive than the rest of the job takes to build.
  • Building rules. Work hours, freight elevator access and landlord approvals shape the schedule.
  • Furniture, AV and IT. Usually outside the construction contract, but on the same critical path. Plan them together.

Landlord work vs. tenant work

Who pays for construction is part of the lease negotiation. The landlord may perform an agreed scope before delivery, provide an allowance toward work the tenant performs, or both. Anything beyond the landlord’s contribution is the tenant’s cost. The work letter in the lease sets out who does what and to what standard. See how tenant improvement allowances work.

Renovating while you occupy the space

It can be done, usually by phasing the work, doing noisy work after hours or moving teams temporarily. It is slower and more expensive than working in an empty space, and it asks more of the team. It is most common when renewing: see renew or relocate.

When to start construction planning

Before you sign. Construction planning belongs in the search, not after it: test fits and early pricing on the finalists, an understanding of what the landlord will deliver and fund, and a realistic schedule for your move-in date. Once the lease is signed, the scope and the landlord’s contribution are largely fixed.

Before choosing a path

  • Test fit on each finalist floor
  • Early pricing for take-as-is, refresh and rebuild options
  • Landlord work, allowance and work letter terms
  • MEP capacity: HVAC, electrical, plumbing
  • Permit requirements for your scope
  • Long-lead items and their order dates
  • Furniture, AV and IT plan and budget
  • Building work rules and approval timelines
  • Restoration obligations at lease end

The bottom line

The choice between taking a space as-is, refreshing it or rebuilding it decides much of an office’s cost and schedule. The right path depends on how well the existing space fits, how quickly you need to move and how much control you need.

Test-fit and price each finalist before the LOI, negotiate the landlord’s contribution with that price in hand, and plan furniture and IT on the same schedule as construction.

Frequently asked questions

What is a second-generation office?
A second-generation office is a space with a previous tenant’s build-out still in place: offices, meeting rooms, a kitchen and finishes. It can often be used as is or refreshed, which saves time and capital compared with a new build-out. The trade-off is less control over the layout, and the condition of systems and finishes varies, so inspect it carefully.
What is a prebuilt office?
A prebuilt is a new installation a landlord builds before a tenant is signed, usually to a general layout with open seating, a few offices and meeting rooms, and a pantry. It is typically unfurnished. Prebuilts let a tenant move in much faster than a custom build, in exchange for accepting a layout designed for a range of tenants.
How long does an office build-out take?
It depends on the scope. A refresh may take weeks; a full build-out includes design, pricing, permits where required and construction, and can take several months. Demolition, mechanical and electrical work, long-lead equipment and building work rules are the usual drivers. A test fit and early pricing on the actual floor give the best estimate.
Who pays for office construction?
Usually both parties, as negotiated in the lease. The landlord may perform an agreed scope, provide an allowance toward tenant work, or both. The tenant pays for anything beyond the landlord’s contribution, plus typically furniture, AV and IT. The work letter sets out exactly who pays for what, so read it closely.
Can we renovate while employees are working in the space?
Yes, with planning. Work is usually phased, noisy tasks are done after hours and some teams move temporarily. It costs more and takes longer than building in an empty space, and it asks more of the team, so price both the work and the disruption before committing.
When should construction planning start?
Before you sign the lease. Test fits and early pricing on your finalist spaces show which one is the better deal once construction is counted, and give you the information to negotiate landlord work or an allowance. After signing, the scope and the landlord’s contribution are largely fixed.

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