Does Vertical Integration Offer the Cheapest Way to Build a House?

Climbing construction costs have made it increasingly difficult for builders to deliver quality home designs at affordable prices. Turning to less expensive materials or smaller floor plans can decrease the cost of building, but could also result in an affordable house that won’t sell because it lacks the features consumers want.

The ideal solution lowers the cost per square foot without lowering quality. Shifting to a vertically integrated business model is that type of solution. The model boosts affordability by bringing all of the roles involved in building a home under one roof.

“In most home builder business models, a developer hires an external general contractor, who hires a site supervisor, who hires subcontractors with separate foremen and crews,” explains Christopher Duffy, Founder and CEO of Hummingbird Development. “For those looking for an affordable way to build a home, that is simply too much layering. With each subcontractor carrying their own overhead for payroll, administration, marketing, sourcing, deliveries, and more, the cost to build gets inflated very quickly, regardless of the square footage or house plan. When those costs get baked into the total, they often add up to 50% of the costs.”

Duffy is a residential real estate developer based in Northern California, focused specifically on residential construction, real estate investment, California real estate, and remodeling costs and trends. He operates within a vertically integrated model, overseeing acquisition, design, construction, and sales in-house. Duffy’s approach emphasizes disciplined underwriting, strategic value-add improvements, and cost-efficient construction. His projects consistently balance functional design, construction quality, and investor returns.

Vertical integration lowers the cost to build by cutting out the middleman

Essentially, vertical integration transforms the home building process by cutting out the middleman. Keeping all components of the house design and building process under one roof allows developers to reduce building costs in two key ways.

First, builders can lower the average cost of materials and other components by leveraging economies of scale. With a single vendor account, developers can negotiate larger discounts with suppliers. As the sole buyer, developers also avoid the markups that each subcontractor adds to the supplies they are using.

Vertical integration provides a way to build a house that reduces delays

Streamlining timelines is another key way vertical integration positively impacts the economics of homebuilding. For builders, the approach enables projects to be completed faster, allowing them to increase profits by taking on more projects.

“More important than the straight cost savings is the savings in time a vertically integrated model can allow,” Duffy says. “General contractors and subcontractors prioritize work and pace based on decisions that have nothing to do with the project. Often, they prioritize payment schedules from other clients that put your project at the back of the line.”

When projects fall behind schedule, developers are forced to take on a variety of additional costs. These include equipment rental and labor costs as well as expenses related to insurance, taxes, and construction loans. Vertical integration allows developers to control everyone’s schedule, making delays — and the costs associated with them — easier to avoid.

“Homebuilders know subcontractors will only show up when the work is easiest for them,” Duffy shares. “Typically, this is about geography as much as project schedules. If they have another paying job nearby, they may concentrate their crews on your project for the week. But when some level of inconvenience pulls them away, your schedule gets blown up. While vertical integration can save about 40% in costs, it also saves 50% of time. That allows developers to move faster, get more projects done, and reduce their exposure to the economic cycle.”

Home building with vertical integration makes choosing the right developer more important

While vertical integration can make it easier to build an affordable home, it also puts a heavier burden on the developer. Rather than tapping into the expertise of each subcontractor, the developer must now have the knowledge needed to ensure each task is completed effectively.

“Vertical integration is far more efficient, but it is a challenge for the developer,” Duffy says. “The developer becomes the key operator driving the project forward. They must know the entire project, where and when each component fits, and what is needed to satisfy both the customer and building codes. It’s a lot of pressure on the operator, but the cost and time efficiencies make it worthwhile.”

The challenges associated with vertical integration make it critical that consumers carefully consider a developer’s capabilities before selecting them. Developers that can’t handle the pressure can end up causing the same delays and cost overruns they were trying to avoid by taking subcontractors out of the loop.

Vertical integration allows developers to provide affordable homes without cutting corners

The significant rise in construction costs over the past five years has forced house hunters to tap into a variety of creative cost-saving options, from tiny houses to fractional ownership to designs that prioritize energy-efficient features. Vertical integration offers an alternative that reduces costs regardless of the type of house being built. It’s an option new home builders can use to reduce construction costs while still allowing their clients to have the home they’ve been dreaming of.

“With vertical integration, the end beneficiary is the homebuyer,” Duffy says. “It’s a model that empowers lower costs and quicker build times, which adds to the supply and makes homes more affordable.”