Frost Line Depth in Santa Fe, NM: New Mexico Codes Range 6

No official local value

No official frost line depth is published for Santa Fe.

No verified code nearby; verified New Mexico codes range 6–16 in.

Source and how we checked

We searched this place’s own code and website and found no published frost line depth.

Climate: 168 nights a year at or below 32 °F (NOAA 1991–2020, Santa Fe 2, 3 mi).

Checked Oct 2026. Report a correction

Footings Deck Water line Fence post

6–16 inrange of verified New Mexico codes
168nights a year at or below 32 °F
74%of nearby soil rated “moderate” for frost action (USDA)

Does Santa Fe have an official frost line depth?

No adopted frost line depth found for Santa Fe in its official documents (checked Oct 2026). No verified code lies near Santa Fe; the New Mexico codes we verified range from 6 to 16 in. Ask the building department for Santa Fe’s own number before you dig.

What frost line depth does Santa Fe use for footings under Table R301.2(1)?

Call 811 at least a few working days before you dig, so buried lines are marked.
Confirm the frost line depth with the Santa Fe building department.
Ask whether your project needs a permit (decks, larger sheds and footings usually do).
Dig below 16 in (the deepest verified state value) unless the building department tells you otherwise.
Book the footing inspection before you pour concrete.

How deep do footings, decks and water lines need to be in Santa Fe?

Drawn with the deepest New Mexico official value (16 in). Confirm Santa Fe’s own depth before you dig.

House or garage footing Deck footing Water service line Fence post

House or garage footing in Santa Fe: dig at least 16 in (41 cm). Below the frost line and at least 12 in deep (IRC R403.1.4).

Using the nearby official value of 16 in until Santa Fe confirms its own
Project	Depth	Rule
House or garage footing	16 in	Below the frost line and at least 12 in deep (IRC R403.1.4)
Deck footing (attached)	16 in	Below the frost line and at least 12 in deep (IRC R507.3)
Water service line	22 in	6 in below the frost line and at least 12 in deep (IRC P2603.5)
Fence post bottom	16 in	No code rule; common practice is below the frost line

Work out posts, concrete and footing sizes with the fence post depth calculator or the deck footing calculator.

How cold does it get in Santa Fe?

Average lows are at or below freezing from Nov to Mar. 168 nights a year reach 32 °F or colder; Dec is coldest, with an average low of 17.6 °F.

NOAA 1991–2020 climate normals, Santa Fe 2 station, 3 mi away, elevation 6,756 ft.

Monthly temperatures as a table

°F	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Low	17.9	21.3	26.4	32.4	40.8	50.1	55.1	53.7	46.8	35.4	24.4	17.6
High	43	48	56.6	64.3	73.7	84.1	85.8	83.4	77.5	66.3	53	42.6

Santa Fe has more freezing nights than 14 of the 16 other New Mexico places we track. The New Mexico median is 124. Coldest: McKinley County; mildest: Lea County.

How likely is the soil in Santa Fe to heave?

Low 26%Moderate 74%

USDA rates the sampled soil around Santa Fe as 26% low, 74% moderate for frost action (main soils: Tanoan, Encantado, Altazano).

USDA NRCS soil survey, 9 sample points within 2 mi. Higher frost action means more risk of heave; see frost heave.

Santa Fe at a glance

Frost line depth: No official local value
County: Santa Fe County
Population (2023 est.): 89,167
Mean annual temperature: 50 °F
ZIP codes (5): 87501 · 87505 · 87506 · 87507 · 87508