Sometimes. California expressly credits qualifying days in county home detention under Penal Code § 1203.016 or a pretrial county electronic-monitoring program under § 1203.018. A person who wore a GPS ankle monitor as a bail condition outside either program may also have a claim if the actual home restrictions were comparably custodial. Wearing the device alone does not establish credit. The order, program enrollment, daily restrictions and dates decide which rule to examine. (Penal Code § 2900.5(a), (b); People v. Gerson (2022).)
| Where the monitoring came from | First question to answer | Key record |
|---|---|---|
| Sentenced county home detention under § 1203.016 | Was the person actually admitted to the administrator’s program in place of county confinement? | Program agreement, enrollment and release dates |
| Pretrial county program under § 1203.018 | Was the person held in lieu of bail and on no other basis, then admitted under the county program? | Jail status, eligibility decision and signed conditions |
| Bail order requiring GPS or home detention outside the program | Were the actual restrictions as custodial as those in § 1203.018, as in Gerson? | Bail order and changes, home hours, GPS and compliance terms |
| Curfew, GPS supervision or another condition without a shown custodial basis | What law or order, if any, makes the particular days creditable custody? | Complete order and program identification |
County-program home detention has an express credit rule
Section 2900.5(a) includes days served in home detention pursuant to §§ 1203.016 or 1203.018 among days credited against a jail or prison term after conviction. This is why the name of the program matters. A judge’s referral, the presence of a monitor, or an informal understanding that someone was “on house arrest” does not by itself prove enrollment or identify the creditable dates.
Under § 1203.016(a)–(g), a county may authorize a correctional-administrator-run program during a sentence in place of county confinement. The administrator, under written policy, decides admission; a court may recommend or refer a person and can restrict or deny participation. Program terms include being inside the residence during designated hours, compliance checks and electronic monitoring. The administrator may allow work, treatment, training and medical visits. An authorized trip outside the home therefore does not, on its own, mean the person was never in the program. Keep the agreement and a dated participation record.
Section 1203.018(a)–(d) covers a different county program for a person held in jail in lieu of bail and on no other basis. It has eligibility conditions, administrator discretion and written participation rules. A person released on bail with a judge-imposed GPS condition is not automatically in that program. Ask the county for the actual enrollment decision and agreement instead of guessing from the ankle device.
A bail condition outside the program needs a closer comparison
In People v. Gerson, the defendant conceded he was not in a § 1203.018 program. His bail order nevertheless required him to stay home during specified hours, wear GPS and accept a Fourth Amendment waiver. The Court of Appeal found those restrictions at least as custodial as the statutory program’s minimum conditions and awarded preconviction custody credit on equal-protection grounds. It also awarded separate conduct credit on that record. The holding requires a comparison of actual conditions, not a rule that every GPS bail condition earns time served.
Get each version of the bail order, not only the last one. A condition may have started or ended partway through the case. Compare home-confinement hours, monitoring, officer access or search conditions, permitted absences and the consequences of noncompliance with the statutory program. Counsel can then assess whether Gerson supports a claim for that particular span of days. A simple curfew, travel restriction or device requirement cannot be assumed to match the case.
Even qualifying home-detention days must be connected to the same conduct for which the sentence was imposed. § 2900.5(b) also prevents crediting one period twice against consecutive sentences. The sentencing court determines admission and release dates and states the total credit in the abstract under subdivision (d). Actual custody days and possible conduct credits are different calculations; Gerson’s conduct-credit award is not a universal formula.
Bring counsel the court order, county program agreement, booking and release records, monitoring logs, approved absences, probation report, sentencing minute order and abstract. Mark the dates claimed, which case the restrictions belonged to and any credit already awarded. The presentence custody-credit records guide explains the broader process for reconciling and correcting the court’s tally.
The Law Offices of David S. Chesley can review whether your California criminal-case monitoring period supports a custody-credit claim. Call (800) 755-5174.