Average house size in the US: 1,845 sq ft, and 2,142 for a new home

By Rohit Gaur · Last updated October 30, 2026 · Report a mistake

Two different numbers answer “how big is a house”, and they are not in conflict — they measure different things:

• New homes: a median of 2,142 sq ft. That is the middle of the 1,005,000 single-family homes America finished in 2025; the mean was 2,378 sq ft (Census Bureau).
• Homes people live in: an average of 1,845 sq ft. That is across all 132.5 million occupied homes — apartments included — in the federal energy survey’s preliminary 2024 figures. A detached house averages 2,313 sq ft (EIA).

New homes are bigger than the housing stock because they are new, and because they are houses: every apartment, mobile home and 1950s bungalow pulls the second number down.

Both numbers are bigger than they were, and the households inside them are smaller: the space per person study divides one by the other back to 1973.

Fifty-three years of new homes

The median new home was 1,525 sq ft in 1973, peaked at 2,467 sq ft in 2015, and has been shrinking since: 2,142 sq ft in 2025 is the smallest since 2009 and 13% below that peak. The mean is always larger than the median, because a few very large houses pull it up.

Where a size sits

Nearly a third of new homes land between 1,800 and 2,399 sq ft. Read the last column to place a house: 2,400 sq ft is bigger than 62% of the homes finished in 2025, and 4,000 sq ft is bigger than 93% of them.

The same house, measured three ways

This is where published averages stop agreeing, and it is worth knowing which measurement you are being quoted:

• The Census Bureau counts “all completely finished floor space”, measured to the outside of the exterior walls, and leaves out the garage, the carport, the porch and any unfinished attic or basement (Census Bureau).
• The energy survey asks the household, and its total “includes all basements, finished or conditioned areas of attics, and conditioned garage space that is attached to the home” (EIA).
• England’s housing survey sends surveyors with a tape and measures the usable floor area inside the dwelling, leaving out integral garages and balconies (English Housing Survey).

A wall is about 6 inches thick, so measuring to the outside rather than the inside adds about 90 sq ft to a 2,000 sq ft house — and the energy survey counts unfinished basements and heated or cooled attached garages, which the Census Bureau’s measurement leaves out. An appraisal is different again: it reports a finished basement as a separate below-grade figure rather than adding it in. How to measure the square footage of a house explains that method, and the measuring guide covers measuring rooms of your own.

By type of home

By number of bedrooms

A three-bedroom home averages 1,914 sq ft, a four-bedroom 2,702. The Census Bureau’s new homes lean the same way: 46% were built with three bedrooms in 2025 and 42% with four or more (Census Bureau). The room sizes pages take the next step and measure the rooms inside.

By region

New homes in the Northeast are the biggest in the country and those in the Midwest the smallest — a 490 sq ft gap in the median. Nearly six in ten new homes are built in the South: 584,000 of the 1,005,000 finished in 2025.

Elsewhere: England

The average English dwelling is 94 m², about 1,012 sq ft — under half the American new-home median, though the two numbers are measured differently, and the English figure covers every dwelling rather than only new houses. A detached house there averages 149 m² (1,604 sq ft).

Stories, and what a floor plan really is

Of the new US homes finished in 2025, 48% had one storey, 46% had two and 5% had three or more (Census Bureau). A 2,142 sq ft two-storey house sits on about 1,071 sq ft of ground, which is why house size and footprint are different questions — and why the drawing below, of the whole floor area as a single rectangle, is a scale rather than a plan.