How voucher size is decided
Your voucher lists a bedroom size, called the family unit size. HUD does not publish a chart for it. Under 24 CFR 982.402, every housing authority writes its own subsidy standards, within these federal limits:
- The standards must give the smallest number of bedrooms needed to house a family without overcrowding.
- They must fit HUD's space rule, which requires at least one bedroom or living/sleeping room for every two people (24 CFR 5.703(d)(5)).
- They must be applied the same way to every family of the same size and makeup.
- A child temporarily away in foster care still counts as a member of the family.
- A pregnant woman with no other household members is treated as a two-person family.
- An approved live-in aide is counted.
- A single person gets a studio or one-bedroom unless a live-in aide lives with them.
Why the answer is a range
Two people per bedroom is the floor most housing authorities start from. Many then add rules of their own. The usual ones: the head of household and a spouse or partner share a bedroom, other adults each get one, and children share two to a room, sometimes only with a sibling of the same sex or within an age range. The calculator shows both ends. Your housing authority's administrative plan, which is a public document, has the exact rule.
Voucher size and how much rent is covered
Voucher size sets the most the program will pay. The payment standard for your family is the lower of the standard for your voucher size and the standard for the apartment you actually rent (24 CFR 982.505). You may rent a smaller apartment if it meets the space rule, or a larger one if you can cover the difference. See what your share would be with the Section 8 rent calculator.
Common questions
How many bedrooms will my Section 8 voucher cover?
It depends on your household and on your housing authority’s subsidy standards. There is no national bedroom chart. Most housing authorities start from one bedroom for every two people and then adjust for couples, the ages and sexes of children, other adults, and medical needs.
Who decides the voucher size?
Your housing authority. Federal rules (24 CFR 982.402) require each one to write subsidy standards that give the smallest number of bedrooms needed to house a family without overcrowding and to apply them the same way to every family of the same size and makeup. The size is printed on your voucher.
Can a single person get a two-bedroom voucher?
Generally no. A single person’s voucher must be a studio or one-bedroom unless a live-in aide lives with them. A housing authority can make an exception for an elderly or disabled person when health or disability justifies it.
Does a baby on the way count?
A pregnant woman living alone must be treated as a two-person family. For larger households the rule leaves it to the housing authority, and many count the unborn child once the pregnancy is verified.
Can I rent a bigger apartment than my voucher size?
Yes, but the subsidy does not grow. The payment standard used is the lower of the one for your voucher size and the one for the apartment you rent, so the extra rent comes out of your share, and on a new lease your share cannot be more than 40% of your adjusted monthly income.
Can I ask for a larger voucher?
Yes. A housing authority may grant an exception to its standards when it is justified by age, sex, health, disability or the relationship of family members. Ask in writing and include documentation, such as a doctor’s letter for a medical need.
Sources
- 24 CFR 982.402, Subsidy standards
- 24 CFR 5.703, National standards for the condition of HUD housing (space rule in paragraph (d)(5))
- 24 CFR 982.505, How to calculate housing assistance payment
- 24 CFR 982.508, Maximum family share at initial occupancy
Rules last read against the sources above on October 1, 2026. This tool gives an estimate. Your housing authority makes the actual determination.