Why a Civil Engineering Feasibility Study Is the Smartest Money You’ll Spend Before You Buy
When you’re evaluating a piece of property in metro Atlanta, the purchase price is the easy number. The hard numbers — the ones that decide whether your project is profitable, buildable, or a money pit — live below the surface. They live in the zoning ordinance, the stormwater regulations, the impervious coverage limits, the utility conveyance, and the dozens of municipal requirements that never show up on a listing sheet.
That’s what due diligence engineering is for. At Mack Engineering, a full-service civil engineering and land development firm based in Alpharetta, Georgia, we deliver feasibility studies that tell you what you’re actually buying — before you close, before you over-leverage, and before a costly surprise turns your pro forma upside down.
This article breaks down what a true due diligence feasibility study includes, why it matters across Atlanta, Alpharetta, Milton, Sandy Springs, Buford, and the surrounding areas, and why the right civil engineering partner is the difference between a profitable development and an expensive lesson.
What Is Due Diligence Engineering?
Due diligence engineering is the technical investigation of a property’s development potential before acquisition. A standard real estate due diligence package — title work, a survey, maybe a basic environmental scan — tells you who owns the dirt and where the property lines are. It does not tell you what you can build, how much of the lot you can cover, where your stormwater has to go, whether sewer is available, or what it will cost to make the site work.
A civil engineering feasibility study answers those questions. It is the bridge between “this property looks like a good deal” and “this property is a good deal.” For developers, investors, builders, and landowners across Georgia, it is the single most important step between contract and closing.
At Mack Engineering, our holistic approach to feasibility is unlike any other in the metro-Atlanta area. We don’t just check boxes — we engineer your decision.
The Four Pillars of a Mack Engineering Feasibility Study
1. Zoning Assessment and Conforming Use Analysis
Every parcel in Georgia carries a zoning designation, and that designation governs everything: what you can build, how dense you can build it, your setbacks, your height limits, your parking, and your buffers. Before you buy, you need to know exactly what the current zoning permits — and just as importantly, what it doesn’t.
Mack Engineering assesses the existing zoning classification and identifies conforming uses so you know precisely what the property allows by right. We flag where your intended use aligns with the current zoning and where it doesn’t, so you can make an informed decision rather than an optimistic assumption.
If your vision requires a different zoning category, we map that out early. Knowing on day one that a parcel needs a rezoning or a variance is the difference between budgeting for it and being blindsided by it. Zoning is the foundation of feasibility — and we start there.
2. Impervious Surface and Lot Coverage Evaluation
This is where many deals quietly fall apart. Most Georgia municipalities enforce strict impervious surface limits and lot coverage requirements — caps on how much of your site can be covered by buildings, pavement, driveways, and other hard surfaces.
These limits directly drive your civil and stormwater design. If a jurisdiction caps impervious coverage at a percentage that’s lower than your site plan requires, your buildable area shrinks, your detention requirements grow, and your costs climb. We’ve seen developers price a deal assuming they could pave the whole site, only to discover the ordinance allowed barely half of it.
Mack Engineering evaluates the applicable impervious and lot coverage requirements up front and models how they constrain your development. We calculate what you can realistically build, how much stormwater detention you’ll need, and how those requirements reshape your civil design and your budget. This single analysis often reveals whether a project pencils out — long before you’ve spent a dollar on construction documents.
3. Creative, Profit-Driven Project Approaches
Constraints aren’t dead ends — they’re design problems. And solving them is what separates a great civil engineering firm from an order-taker.
Our team develops creative project approaches that work with the site’s constraints to maximize yield, safety, and profitability for our customers. That might mean reconfiguring a layout to unlock additional lots, rethinking stormwater management to free up buildable area, phasing a development to improve cash flow, or identifying an alternative access point that changes the entire economics of a parcel.
We engineer for value. The goal is always to deliver a project that is safe, code-compliant, on-time, on-budget, and — critically — profitable for you and your customers. A feasibility study that only lists problems is incomplete. Ours hands you a path forward.
4. Identifying the Blind Spots Others Miss
The most expensive surprises are the ones nobody told you to look for. A standard due diligence package — the kind handed over by a broker or a general inspector — rarely catches the civil engineering blind spots that derail projects after closing.
These are the issues we routinely surface that standard packages miss:
- Existing easements that bisect your buildable area or restrict where you can place structures
- Floodplain and floodway encroachments that limit development footprint and trigger costly mitigation
- Stream buffers and state waters that impose buffer setbacks under Georgia regulations
- Wetlands requiring delineation, permitting, or mitigation
- Topography and steep slopes that explode grading and retaining wall costs
- Soil and geotechnical conditions that affect foundations and detention design
- Offsite drainage flowing onto or across your parcel
- Utility availability gaps — the assumption that water and sewer are “right there” when they’re actually thousands of feet away
Mack Engineering’s feasibility studies are built to catch exactly these blind spots. We investigate the property the way an engineer does — not the way a checklist does — so you walk into closing with eyes wide open.
The Civil Engineering Variables That Make or Break a Land Purchase
Beyond the four pillars, a complete feasibility study has to address the infrastructure realities that determine whether a site can actually be developed. These are the variables that should weigh heavily in any property purchase decision.
Water Availability and Conveyance
Is potable water available at the property? At what pressure and capacity? How far is the nearest main, and who pays to extend it? Water availability — and the cost of water conveyance to your site — can shift a project’s budget dramatically. We assess existing water infrastructure and what it will take to serve your development.
Sanitary Sewer vs. Septic
One of the biggest swing factors in any Georgia land deal is whether the property has access to public sanitary sewer or will require septic systems. Sewer availability affects density, lot sizing, and overall yield. If sewer isn’t available, septic feasibility depends on soils, lot size, and county health department requirements. Mack Engineering provides both sanitary sewer designs and septic designs, and we evaluate which path your property supports — and what it costs — before you commit.
Utility Conveyance and Easements
Power, gas, telecom, and stormwater conveyance all have to reach and serve your site. Existing utility easements can constrain your layout; missing infrastructure can add six figures to your budget. We map utility conveyance comprehensively so there are no surprises after you own the dirt.
Stormwater and Drainage
Georgia’s stormwater regulations are demanding, and stormwater design is one of the largest cost drivers on any site. As part of our stormwater design and hydrology practice, we evaluate detention requirements, water quality treatment, and drainage patterns during feasibility — so your stormwater strategy is baked into your budget from the start, not discovered during permitting.
How Mack Engineering Streamlines Rezoning Across Metro Atlanta
Many of the best development opportunities require a rezoning — and rezoning is where projects get stuck for months if they’re handled reactively. A feasibility study that anticipates rezoning turns a daunting process into a managed one.
Mack Engineering streamlines rezoning efforts by producing the technical foundation that planning departments and elected officials want to see: concept site plans, zoning exhibits, zoning reports, and feasibility reports that demonstrate your project is well-conceived, code-aware, and community-compatible. When you walk into a pre-application meeting with engineered exhibits instead of a rough sketch, you change the conversation — and you shorten the timeline.
Here’s how our local knowledge expedites approvals across the region:
Alpharetta, GA
As an Alpharetta-based firm, we know this market intimately. Alpharetta’s design standards, density expectations, and stormwater requirements are well-defined, and we engineer feasibility studies and rezoning exhibits that anticipate exactly what city staff and council will scrutinize — helping you move from concept to approval efficiently.
Milton, GA
Milton is one of the most development-sensitive jurisdictions in metro Atlanta, with strong rural-preservation priorities, generous setbacks, and tight density controls. Our experience here — including estate subdivision work like Manor Estates — means we understand how to position a project to align with Milton’s standards and avoid the pitfalls that stall less-prepared applicants.
Sandy Springs, GA
Sandy Springs presents dense, infill, and redevelopment challenges where impervious coverage, stormwater detention, and utility capacity are constant constraints. We help developers navigate the city’s requirements with feasibility studies that pressure-test a site’s true buildable potential before acquisition.
Buford, GA
Buford and the broader Gwinnett/Hall County corridor are seeing rapid growth, which means utility availability, sewer capacity, and access vary widely from parcel to parcel. Our feasibility studies cut through that uncertainty so you know exactly what infrastructure your site has — and what it needs.
And the Surrounding Areas
From Roswell, Johns Creek, Cumming, and Canton to the wider metro-Atlanta and North Georgia market, our holistic feasibility approach travels with us. We’ve delivered subdivision, medical office, and commercial development projects across the region, and we bring that jurisdictional knowledge to every study.
Why Hire Mack Engineering for Your Feasibility Study
Choosing the right civil engineering firm for your due diligence isn’t about finding someone to fill out a report. It’s about partnering with engineers who think like developers — who understand that the goal isn’t just a buildable site, but a profitable one.
Here’s what sets Mack Engineering apart:
- Full-service civil engineering — feasibility, land planning, zoning exhibits, grading, land disturbance plans, stormwater design, sewer and septic design, erosion control, and construction management, all under one roof
- A holistic approach to the project design process that’s unlike any other in metro Atlanta
- Local jurisdictional expertise across Alpharetta, Milton, Sandy Springs, Buford, and the surrounding cities
- Creative, profit-driven engineering that turns constraints into opportunities
- Blind-spot detection that goes far beyond a standard due diligence package
- Efficient, cost-effective delivery that keeps your projects on-time and on-budget
- Customers first — we prioritize your goals at every stage, from concept to construction
A feasibility study from Mack Engineering doesn’t just tell you whether you can build. It tells you whether you should — and how to do it profitably.
Don’t Buy Blind. Engineer Your Decision.
The cost of a feasibility study is a fraction of the cost of a bad acquisition. Before you put a property under contract — or before your due diligence period expires — let Mack Engineering tell you what you’re really buying.
If you’re evaluating a development opportunity anywhere in metro Atlanta, contact Mack Engineering today to commission a due diligence feasibility study built to protect your investment and maximize your return.
Visit www.mack-engineering.com to get started.
Mack Engineering is a full-service civil engineering and land development firm based in Alpharetta, Georgia, serving Atlanta and the greater metro-Atlanta region. Services include feasibility reports, concept site plans, zoning exhibits and reports, land disturbance plans, grading plans, stormwater and hydrology design, sanitary sewer and septic design, erosion and sediment control, ADU design, and construction management.