Why Scale Matters — and How Preconstruction Expertise Guides the Way

When it comes to multi-family development, the scale of a building — think unit count and amenities — drives everything from cost and efficiency to rentability, financing, and long-term ROI. But finding the “right size” isn’t a guessing game. It’s about striking a balance between what fits the site, the budget, and the market — and knowing when bigger (or even smaller) truly pays off.

This is where preconstruction comes in. With cost modeling, data-driven comparisons, and hands-on experience, a general contractor’s preconstruction team can help owners and developers test different scale options. In this industry, the smartest projects don’t just get built — they’re built right-sized.

Why Apartment Scaling Works

Scaling an apartment project isn’t just about how many units fit on a site. It’s about how every square foot works for you. Much of it comes down to economy of scale — essentially the same principle as buying in bulk. The more you buy, the more you save on shipping and production. Larger projects often attract more interest from subcontractors, which increases competition and drives down costs. The list goes on.

Site development costs are often the biggest driver behind scaling — elements like sewers, water mains, parking lots, retaining walls, and landscaping exist regardless of unit count. While these costs have some relationship with the number of units (more units = bigger sewer pipe), it’s not a direct correlation, and certain aspects of the work aren’t affected at all by unit quantity.

Another way to view it is through overall building size. Every structure needs essentials like footings, a roof, and a slab — those costs exist no matter how many units are inside. The key is determining how many units can share those same elements efficiently. In most cases, the goal is to fit as many units as possible under one roof or above the same slab before added complexity outweighs the benefit.

Key Factors in Apartment Scaling

Budget

Every project starts with a number in mind. Whether you’re targeting a $175K per-unit build or trying to keep total costs within a certain range, scale has a direct impact on how those dollars are stretched. The earlier a general contractor is brought in, the sooner you can test different configurations.

You want to make sure your design matches your budget goals — not the other way around. If you wait to engage a contractor until the  Design Development (DD) or Construction Documents (CD) phase and the design doesn’t align with your budget, you have a problem. It can not only cost a fortune in redesign but also delay the project start.

Location

Parking is often the biggest factor in determining how large a project can be. Zoning and height limits matter too, but parking usually sets the boundary. If scaling up means adding another level of parking — like a second podium — it can quickly drive up costs and make the project less feasible.

Building height is another key consideration. Once a project exceeds 70 feet, it often moves into a more expensive construction type. Even within the same classification, adding an extra floor can have an impact. A four-story building may require an elevator, which adds cost. But if that added level brings in enough units, the tradeoff can be worthwhile.

Goals and Objectives

Not every project needs to be maxed out. Some developers prioritize speed to market or want to target a specific renter demographic. Others may choose to scale up for better long-term ROI. Defining those priorities early and running cost comparisons with your general contractor ensures your project delivers on the right metrics.

The General Contractor and Preconstruction Advantage

A good preconstruction team does more than estimate costs — they give you options.

At Ronco, we build detailed, micro-level budgets that break a project into hundreds of line items. Then, we analyze them at a macro level. We compare the data to recent projects across similar scopes and flag where costs differ significantly. This approach gives us time to dig into the unique details of each project and lets us model multiple scenarios side by side. Instead of just producing a 60-unit budget, we can quickly run comparisons for 75, 80, 95, or even 110 units to see how each option affects cost and feasibility.

“The Grant is a perfect example of how our detailed analysis can adjust project scope,” explains Nate Bledsoe, Senior Project Manager and one of Ronco’s estimators. “Early in planning, we saw an opportunity to add eight units without changing the overall footprint — a move that shifted the project from okay in financial terms to strong. Similarly, Leavenworth Lofts grew from 24 to 28 units and NOVA from 74 to 78, all before construction began.”

Those small adjustments can make a major difference in the numbers. That’s the value of preconstruction — exploring every angle, every scale, before you pour the first footing.

Finding the Sweet Spot

There’s no one-size-fits-all formula for multi-family projects. Every site, budget, and goal is different. But there are a few common benchmarks that help guide decisions.

For example, many wood-frame or Type V buildings work best at around 70 feet tall. Zoning often allows one apartment per 2,000 square feet of site area. And parking typically functions best at a one-to-one ratio — one space per unit. Even smaller details like wall thickness, window size or insulation have their own “sweet spots” where cost and performance align.

The biggest factor in finding that balance often comes down to the mix of units. Because projects are usually measured by cost per unit, having more total units helps spread out costs. For instance, a two-bedroom costs more to build than a one-bedroom, yet both count as one unit in that equation. In most cases, the most efficient setup is a four-story building over one level of parking — a 4-over-1 podium — with fewer than 100 units, typically a mix of about 30% studios, 50% one-bedrooms, and 20% two-bedrooms.

Scaling a multi-family project is about finding balance — between cost, design and long-term function. There’s no single formula that fits every site or market, but understanding how scale impacts efficiency can guide better decisions early on. With thoughtful planning and the right data, you can find the size that makes sense — for the project, the budget, and the people who call it home.

Smart scaling isn’t about squeezing in more units. It’s about aligning design, cost and market goals early through data-driven planning. When developers and contractors collaborate from day one, every square foot works harder — and every dollar goes further.