Modular Home Price Per Square Foot by State (2025 Data)

Price the product you are actually buying. A modular home is built to the state or local residential code path (IRC-based in most states) and set on a permanent foundation. A manufactured home is built to the federal HUD code. Manufactured usually costs less per square foot and is not the same financing or resale file. Prefab vs modular keeps the labels honest.

Factory-only (often about $50 to $100 per square foot on Prefably's working band) is the box leaving the plant. Installed (the $80 to $160 band most articles cite) means the home is set and closed in. It still may omit utilities, driveway, well or septic, and finish site work. Turnkey should mean occupancy, and salespeople use that word for different scopes.

When you compare prefab home price per square foot across builders, lock the scope first: factory unit, delivery, set crew, foundation, and utility connections. A cheaper PSF that drops freight or the foundation is not a win.

A standard modular install in 2025 often sat in the $80 to $160 per square foot installed band. Premium specs ran $150 to $250. High-cost coastal markets went higher. The national midpoint of those bands tells you almost nothing about your county.

The four U.S. regions had different floors. These ranges come from industry cost guides and regional builder data compiled through mid-2025. County, builder, and finish level still move the quote.

Labor is the first lever. New York, New Jersey, and California carry higher installation and set-crew rates than many right-to-work markets in the South and parts of the Midwest. Union premiums commonly run about 20% to 40% above non-union rates in BLS employer compensation series. In high-cost markets, site labor that runs about $40 to $75 per square foot can add roughly $10 to $30 per square foot to the installed price before you count the house. Rural counties inside expensive states sometimes sit outside metro wage structures.

Delivery is the second lever. Modules move by truck. A common planning rule is $5 to $10 per square foot, or about $3,000 to $20,000 total, depending on distance and how many sections you haul. Buyers in thin-factory states (Wyoming, Montana) often pay more freight than buyers in Pennsylvania or Texas. Past about 200 miles, freight climbs fast. Wide-load permits and pilot cars are a state DOT issue, not a catalog footnote.

The expensive markets stack both. A West Coast buyer pulling a Midwest plant pays high freight and high local set labor. That is why California and Washington sit at the top of the regional bands. Crane time on set day is part of that local labor, not a surprise add-on you discover after the deposit.

Code packages show up in the bid whether they are itemized or buried. California seismic and energy requirements, plus local impact fees, can add $10,000 to more than $30,000. Florida hurricane-resilience products typically add $20,000 to $40,000. Those are risk-map costs, not upgrades.

Ohio's usual code add-on is frost-line foundation depth, often about $2,000 to $8,500, and the state's modular approval path is comparatively consistent. Texas sites without existing utilities often face $15,000 to $35,000 in hookups, with a lighter permit process than most coastal metros. Permitting still varies by county. Call the building department before you treat a state average as your lot.

New York is its own stack: state building and energy code plus metro installation rates. Building in a rural county can cut labor without changing the code path. For HUD-code setup line items (pier vs permanent foundation, lot rent), use the factory home budget guide.

The factory quote is the house. It is not the lot. Site prep, grading, and driveway access often run $5,000 to $20,000 on an ordinary suburban lot, more on wooded or remote land. A simple slab or crawlspace can start around $5,000 to $15,000. Frost depth, poor soil, and full basements run higher. Do not treat a $5,000 to $8,000 foundation line as a national bid.

Utilities split suburban and rural files. Electrical near existing infrastructure often sits between $250 and $5,000; raw land goes higher. Water and sewer commonly run $500 to $20,000 depending on distance to the tap. Modular permits often land between $500 and $3,100, with coastal metros and strict zoning above that.

A first planning buffer of 10% to 15% above the factory quote covers a utility-ready lot's site work, foundation, utilities, and permits. Rural or undeveloped land needs more. Turnkey modular cost per square foot, factory through finished connections, often lands 15% to 25% above factory-only once those lines are in. The modular cost guide is the longer checklist.

Take a 2,000 square foot plan and apply the 2025 installed bands. South: about $170,000 to $300,000. Midwest: about $176,000 to $360,000. Northeast: about $240,000 to $500,000. West Coast: about $260,000 to $560,000. A Texas file near $85 to $145 per square foot plans about $170,000 to $290,000. A California file near $140 to $230 plans about $280,000 to $460,000.

Those totals assume installed scope, not a factory PDF and not a raw-land well-and-septic job. Luxury finishes, complex roofs, long hauls, and climate packages push you toward the top of the band or past it. If a quote is far below the regional floor, look for a missing foundation, a manufactured product labeled as modular, or freight sitting in a later change order.

Factory-built housing absorbed real input pressure in 2025. Eye on Housing reported U.S. building-material prices up about 3.5% year over year in September 2025, the largest annual rise since early 2023. Metal-intensive parts moved more than wood-frame components. Tariff exposure added thousands of dollars per new home across the industry; treat any single $7,500 to $10,000 headline as an industry estimate, not your invoice.

The factory model still kept a labor edge: plant labor often ran about 15% to 20% below comparable site labor because of repetition, bulk purchasing, and weather-independent schedules. Modular still came in about 10% to 20% below comparable stick-built pricing in most regions in 2025. The gap was widest where site labor is most expensive. Modular vs stick-built is the full comparison.

A PSF quote is only useful if both sides mean the same scope. Before you ask, know whether power, water, and sewer are at the property line, your county's permit and setback rules, and the finish level you actually want. Then ask whether the number covers delivery, set, foundation, and utility connections, or only the factory unit.

The fastest way off a regional average is a builder who already delivers to your county. Prefably is an independent directory of 1,400+ prefab, modular, manufactured, and ADU companies organized by state and delivery area. Browsing is free. You contact the company yourself. Prefably does not route your inquiry to a lead board.

The 2025 modular home price per square foot by state was too wide for one national figure. The South and Midwest offered the lowest installed entry points, about $85 to $180. The Northeast and West Coast ran about $120 to $280 once labor, compliance, and delivery are in. Site prep, utilities, and permits still sit on top of the factory quote.

Materials inflation did not erase the factory cost advantage in most regions. The reliable next step is a written quote from a builder who delivers in your state. Start on Prefably, compare a few profiles, and email them the same lot notes. That is how a regional band becomes a number you can take to a lender.