A commercial feasibility study is an architect's written test of whether the building you intend can actually be built on a specific site or in a specific existing building: how much fits, what the code will require, and roughly what it will cost, answered before you are committed.
Most of the money in a commercial project is spent after closing. Most of the expensive decisions are locked in before it. The study's job is to find the problem while you still have the right to walk.
We run feasibility for buyers, developers, investors, lenders, brokers, and business owners choosing between a building and a lease, across Greater Houston and Texas. The answer comes back as go, no-go, or go with conditions.
Key takeaways
- An architectural feasibility study answers what can physically and legally be built on a property, which is a different question from a market study or a financial pro forma.
- It is timed to finish inside the option or feasibility period of a commercial purchase contract, while you can still renegotiate, extend, or terminate.
- Houston has no conventional zoning, but Chapter 42 building-line rules, deed restrictions, parking, and stormwater detention still decide how much of a site is buildable.
- In existing buildings, a change of use is the usual trigger for sprinkler, egress, and accessibility upgrades, and "grandfathered" protects less than most buyers assume.
- The deliverable is a short go/no-go memo with test-fit diagrams, a code summary, ranked risks, and cost and schedule ranges.
- Typical study
- 1–3 weeks
- Test-fit schemes
- 2–3
- Deliverable
- Written memo
- Decision point
- Pre-closing
What is an architectural feasibility study?
An architectural feasibility study takes one property and one intended use and answers three questions: what the rules allow, what physically fits, and what that means for cost and schedule. A licensed architect does it because the answers depend on reading code, site rules, and drawings together, the way a permit reviewer eventually will.
How it differs from market and financial feasibility
A market study asks whether there is demand. A financial pro forma asks whether the numbers work at a given rent and cost. Both depend on an input neither can produce: how many rentable square feet, units, parking spaces, or dock doors the site will really yield. That number comes from the architectural study, and if it is wrong, no spreadsheet will catch it.
| Question | Marketing packageWhat you're handed | Feasibility studyWhat we test |
|---|---|---|
| Buildable area | Gross acreage or existing square footage. | Net area after building lines, easements, detention, and parking. |
| Parking | Assumed, or counted under the last use. | Counted against the ordinance for your use. |
| Code | Rarely mentioned. | Occupancy, construction type, sprinklers, egress, accessibility. |
| Cost | A per-square-foot figure from another deal. | A range tied to the actual scheme and code path. |
| Risk | Disclosed where the seller knows of it. | Found, ranked, and priced where possible. |
What other consultants provide
The study does not replace environmental, survey, or title work. Those come from other licensed professionals, usually engaged by you or your lender. Our job is to read what they produce and fold it into the answer.
Phase I ESA
An environmental consultant's assessment of recognized contamination risks. Usually a lender requirement.
Survey
A boundary or ALTA survey showing lines, easements, and encroachments. It becomes the base for our test fits.
Title commitment
The title company's list of recorded exceptions, where many deed restrictions and easements first appear.
Geotechnical report
Soil borings and foundation recommendations. Houston's expansive clays make this more than a formality.
Civil engineer
Drainage, detention, utility connections, and paving design once the project moves forward.
An easement on the survey that crosses the only logical driveway, or a title exception that limits the use, changes the answer. That coordination is the part that usually falls between chairs.
How the option period works, and how to use it
Most commercial purchase contracts in Texas include a negotiated window, usually called the feasibility period or option period, during which the buyer can investigate and terminate under the contract's terms. Its length is a business point, not a legal constant. Everything on this page has to happen inside it.
The clock starts on the contract's effective date, not the day the team gets going, and survey, title, and utility inquiries can take much of the period to come back. So the work runs in parallel from day one. The diagram shows an illustrative 30-day period: zoning and deed restrictions, survey and title by others, utilities and drainage, code path, test fits, and cost run as overlapping bars that converge on the go/no-go memo a few days before the deadline.
Those last few days matter. A memo that lands the afternoon the option expires gives you one choice. A memo with time to spare gives you three: close, go back to the seller with documented findings, or walk away.
Option period length, termination rights, and notice requirements are set by your contract and negotiated with your attorney. The 30-day period shown is illustrative. We work to the deadline your contract actually sets.
What does a commercial site review cover in Houston?
A site review answers what the rules and the ground allow on this particular tract. Around Houston, the answer depends heavily on which side of a city limit line the property sits.
Land use rules: Houston is not "no rules"
Houston has no conventional zoning, which is true and routinely misunderstood. Chapter 42 of the city code still governs lots, building lines, and subdivision, and the city sets parking, landscaping, and detention requirements. Private deed restrictions are enforceable, and on many older tracts they are the closest thing to zoning there is. We read the restrictions of record, not the seller's summary.
Sugar Land, Pearland, Katy, and other suburban cities have zoning, and some require a rezoning or special use approval for the use you have in mind. Unincorporated Harris and Fort Bend County have no zoning, but county engineering, floodplain, and fire marshal review still apply.
Platting and easements
If the tract is unplatted, being subdivided, or being combined, a plat or replat may be required before a building permit, and in Houston that goes through the Planning Commission. It can add weeks to months and sets its own building lines. Utility, drainage, access, and pipeline easements are common across the region; you generally cannot build over them, and a corridor through the middle can turn one good site into two awkward ones.
Floodplain and stormwater detention
We check the property against FEMA flood maps and local floodplain rules, which can set a minimum floor elevation and restrict fill. New impervious cover usually requires stormwater detention, and a pond or underground system takes real area off the site. We carry it as a planning allowance and bring in a civil engineer when that number decides the answer.
Utilities, access, parking, and fire lanes
Water, sanitary sewer, storm, power, and gas each need to reach the site with enough capacity. In much of the suburban region, water and sewer come from a municipal utility district (MUD), a local district with its own approval process. Driveways on state highways and frontage roads need a TxDOT permit. Parking ratios are set by use, so a building can be compliant for one tenant and short for the next, and fire lanes and hose reach can drive the whole layout on a deep or narrow tract.
- Zoning, land use rules, or deed restrictions
- Building lines and setbacks
- Plat status and replat triggers
- Easements of record and on the survey
- Floodplain status and floor elevation rules
- Stormwater detention allowance
- Water, sewer, storm, power, and gas capacity
- Driveway permits, including TxDOT
- Parking ratio for the intended use
- Landscape buffers and fire lane access
All of that nets out to one number the broker's flyer never shows: the buildable footprint. In the diagram, a setback band comes off the site boundary, a detention area claims its share, and the parking field and drives take much of what is left. The stacked bar beside the plan subtracts each in turn, leaving the footprint you can actually build.
That is why price per acre and price per buildable square foot can tell very different stories about the same two sites.
How the building code shapes cost before design starts
The code path is the chain of building code decisions that follows from what a building is and how big it is. It is mostly settled before anyone draws an elevation, and it moves cost more than most finish selections ever will.
Occupancy, construction type, height, and area
Every building is classified by use: an office is business, a warehouse is storage, a larger restaurant is assembly. Construction type describes how fire-resistant the structure is, and together with occupancy and sprinklers it sets how tall and how large the building can be. A test fit that ignores allowable area is just a drawing.
Sprinklers and egress
Sprinklers are required once certain occupancies pass limits on fire area, occupant load, or stories, and local amendments adjust those limits. Crossing one can bring a sprinkler system, a larger water service, and a backflow assembly at once. Occupant load also drives the number, width, and spacing of exits, so turning a warehouse into event space changes far more than the finishes.
Accessibility and energy
Texas accessibility is governed by the Texas Accessibility Standards (TAS), administered by the Texas Department of Licensing and Regulation (TDLR). Projects in covered buildings with an estimated construction cost of $50,000 or more must be registered and reviewed and inspected by a Registered Accessibility Specialist (RAS), a TDLR-licensed reviewer. More in our note on TDLR accessibility review. Energy code compliance for envelope, lighting, and mechanical systems is part of the permit set as well.
“The code path is set before the first elevation.
So is much of the budget.”
Buying or leasing an existing building: what to check
An existing building looks like less risk than raw land, and sometimes it is. But it was designed for somebody else's use under an older code. The question is whether it works for you.
Change of use is the main trigger
When the new use falls into a different occupancy classification, the building generally has to meet current requirements for that use where it counts: sprinklers, alarm, exits, accessibility, and sometimes structure. Retail to medical clinic, warehouse to assembly, and office to restaurant are common examples.
Same use, light refresh
Existing conditions mostly stay.
New work meets current code.
Alteration, same occupancy
Altered areas meet current code.
Route to them is upgraded.
Change of occupancy
New use meets current rules.
Sprinklers, exits, access reviewed.
The details depend on the adopted existing-building code, local amendments, and how the building official and fire marshal read the project, so we confirm the path with the jurisdiction on anything that decides the deal.
What "grandfathered" really means
Grandfathered is not a status the building holds. Existing conditions that were legal when built can generally remain as long as the use stays the same and the work does not make them less compliant. Change the use, expand, or alter enough, and the protection falls away for the parts you change.
A building is only grandfathered for the use it already has. Your use is the one that gets reviewed.
Condition and capacity
- MEP capacity. Electrical service, HVAC capacity and age, and plumbing against what your use needs.
- Roof. Age, drainage, and whether it can carry new equipment.
- Structure. Visible distress, floor capacity, and foundation movement. We flag it; a structural engineer confirms it.
- Accessibility. Parking, route, entrances, and restrooms, which are almost always in scope once you alter.
A walk-through is not a property condition assessment, and our memo says so. For leased suites, the same questions run on a tighter clock; see tenant improvement.
Test fits, yield, and order-of-magnitude cost
A test fit is a quick, dimensioned layout that proves whether the program fits. We usually draw two or three schemes, because the first layout is rarely the best and the comparison shows which constraint is really in charge.
What each scheme reports
- Yield: square feet, units, rooms, dock doors, or seats, whichever your pro forma runs on.
- Parking: stalls provided against stalls required.
- Efficiency: rentable or usable area as a share of gross. Corridors and mechanical rooms earn no rent.
- Code notes: the occupancy, construction type, and sprinkler assumptions the scheme depends on.
Order-of-magnitude cost and schedule
An order-of-magnitude cost is a range, not a bid, built from area, building type, code path, and site work and labeled with its assumptions. It will tell you whether the project sits where your pro forma assumed or somewhere else entirely. We are not a contractor and don't price like one; where a number decides the deal, we recommend an estimator check it. Schedule matters as much, because carrying costs run whether or not anything is being built:
- 014–8 weeks
Schematic design
Set the building concept on the chosen scheme.
- 024–8 weeks
Design development
Bring structure and MEP into the design.
- 038–14 weeks
Construction documents
Produce the coordinated permit and bid set.
- 046–16 weeks
Permitting
Work through plan review and comments.
- 053–6 weeks
Bidding & award
Select the contractor who will build it.
Planning ranges, not a project quote. Timing varies with owner decisions, project complexity, and jurisdiction workload.
Platting, a rezoning, or a utility extension can add time to the front of that sequence. The design phases themselves are covered on our commercial architecture page.
What the go/no-go memo tells you, and what kills deals
The deliverable is a written memo, not a stack of drawings. It opens with a one-paragraph answer, then gives test-fit diagrams with yield and parking tables, the site findings, a code path summary, a ranked list of risks with what it would take to resolve each, cost and schedule ranges, and the open items that depend on others.
Red flags that kill deals
- A deed restriction that prohibits or limits the intended use.
- Detention and building lines that leave too little footprint.
- Required parking that cannot fit on the site.
- No sanitary sewer capacity, or no district service available.
- An easement or pipeline corridor through the only workable footprint.
- A change of use that requires a full sprinkler system and new water service.
None of those is automatically fatal, and several become negotiating points once documented. The point is to know which one you face before the earnest money becomes non-refundable.
- 01
Intake
address, deadline, intended use, and target size
- 02
Research
public records, restrictions, maps, and utility inquiries
- 03
Site visit or building walk-through
- 04
Test fits
two or three schemes with yield and parking
- 05
Go / no-go memo
followed by a call to walk through it
What to send us for a study
Send the address or parcel ID, any survey or site plan, the date your option period ends, the intended use and target size, and the title commitment once you have it. For an existing building, add any drawings and the certificate of occupancy. Missing pieces don't stop the study; they become named assumptions.
What changes by building type
Industrial
Clear height, column spacing, truck court depth, trailer parking, and dock count drive industrial yield, so site depth matters as much as acreage. See industrial.
Medical
Medical uses need more power, plumbing, and parking than general office, and some clinical uses change the occupancy classification. The cost side is in medical office build-out cost drivers.
Multifamily
Unit yield is the whole question: unit mix, parking by unit or bedroom, and how many stories the construction type allows. More on multifamily.
Retail pads and restaurants
A drive-through needs a stacking lane that does not block parking or driveways, and center restrictions can limit uses. Restaurants need a grease interceptor, a route for hood exhaust, and adequate gas, which often decides which suite works. See retail and hospitality.
Frequently asked questions
A commercial feasibility study is a short architectural study that tests whether a specific building and use can be built on a specific site or in an existing building. It covers land use rules, site constraints, the code path, test fits, and cost and schedule ranges. The result is a written go/no-go recommendation delivered before you close.
Most studies take one to three weeks, scheduled around your contract's option or feasibility deadline. A focused question on a single site can often be answered in days. Items that depend on others, such as survey, title, or utility responses, are listed as open items rather than waited on.
The City of Houston has no conventional zoning, but it does regulate development through Chapter 42 lot and building-line rules, parking, landscaping, and stormwater detention requirements. Private deed restrictions are enforceable. Many surrounding cities, including Sugar Land, Pearland, and Katy, do have zoning.
No. A Phase I ESA is prepared by an environmental consultant to identify potential contamination and is usually required by the lender. An architectural feasibility study addresses what can be built, and we review the Phase I, survey, and title findings wherever they affect the answer.
It means existing conditions that were legal when built can usually stay, as long as the use does not change and the work does not make them less compliant. A change of occupancy, an addition, or a substantial alteration can require current code in the affected areas. It is tied to the current use, not a permanent status.
No. Temelar provides architecture and related professional services and never acts as the general contractor. If the answer is go, we can carry the project through design, permitting, and construction administration, and you hire the contractor of your choice.
Have a site under contract?
Send the address, the intended use, the rough size, and the date your option period ends through the contact page. We will tell you what the study needs to cover and whether it fits your deadline, usually the same day. If your team is already hired and you want an independent licensed reviewer, see owner's representation.
