What cleaning costs in Maryland
Work the arithmetic from the wage rather than from a price list. A typical 60,000 sq ft elementary school has roughly 51,420 sq ft of cleanable floor. At APPA Service Level 4 — the level most districts actually buy — that is about 12.6 productive hours a night, five nights a week across 185 session nights plus break coverage.
| Median wage, Maryland | $17.61/hr |
| Loaded wage (payroll taxes, workers comp, PTO, uniforms, training — ×1.22) | $21.48/hr |
| Paid hours per year, incl. 12% relief factor | 2,721 hrs |
| Direct labour | $58,462 |
| Site lead, consumables, equipment, supervision, QC, vehicle | $33,700 |
| Summer deep clean | $13,093 |
| Indicative annual price, Level 4 with summer deep clean | $131,500 |
|---|---|
| Per square foot, per month | $0.183 |
The same building at three service levels
| APPA service level | Hours/night | Per year | $/sq ft/mo |
|---|---|---|---|
| APPA Level 2 — ordinary tidiness | 20.6 | $177,500 | 0.247 |
| APPA Level 3 — casual inattention | 15.4 | $148,000 | 0.205 |
| APPA Level 4 — what most districts buy | 12.6 | $131,500 | 0.183 |
Budgeting estimate, not a quotation. Assumes contractor-supplied consumables and no day porter; a full-time day porter typically adds $30,000–$55,000 a year. Wage from BLS OEWS May 2025. Burden, relief factor and overhead multipliers are industry estimates and vary by employer. The real number comes from a timed walk-through.
Most Maryland districts are small — and that changes who can serve them
Of the 25 districts in Maryland, 2 (8%) run five schools or fewer. National contractors are built around large portfolios; a district with two or three buildings is usually served better, and priced better, by a contractor who is not spreading regional management across eighty sites.
| Schools in the district | Districts in MD | Share |
|---|---|---|
| 1-2 | 1 | 4% |
| 3-5 | 1 | 4% |
| 6-10 | 3 | 12% |
| 11-20 | 4 | 16% |
| 21-50 | 8 | 32% |
| 50+ | 8 | 32% |
Janitorial pay across Maryland
Contract cleaning competes for the same labour pool as in-house custodial staff. These are the percentiles that set your floor:
| Percentile | Hourly | What it means for a bid |
|---|---|---|
| 10th | $15.31 | Entry rate; high turnover territory |
| 25th | $16.62 | Common contract-cleaning start rate |
| Median | $17.61 | Where a retention-minded bid sits |
| 75th | $20.61 | Leads and specialist floor techs |
| 90th | $23.29 | Supervisors and skilled trades |
| Housekeeping supervisor, median | $23.82 | Site lead cost |
BLS Occupational Employment and Wage Statistics, May 2025, SOC 37-2011, cross-industry. Mean hourly for Maryland is $18.88 — a different statistic from the median and usually higher.
Largest districts in Maryland
| District | County | Schools | Students |
|---|---|---|---|
| Montgomery County Public Schools | Montgomery County | 211 | 159,181 |
| Prince George's County Public Schools | Prince George's County | 199 | 132,123 |
| Baltimore County Public Schools | Baltimore County | 178 | 110,024 |
| Anne Arundel County Public Schools | Anne Arundel County | 128 | 85,029 |
| Baltimore City Public Schools | Baltimore city | 151 | 76,807 |
| Howard County Public Schools | Howard County | 78 | 57,565 |
| Frederick County Public Schools | Frederick County | 69 | 48,054 |
| Harford County Public Schools | Harford County | 55 | 37,771 |
| Charles County Public Schools | Charles County | 40 | 28,162 |
| Carroll County Public Schools | Carroll County | 44 | 26,141 |
| Washington County Public Schools | Washington County | 43 | 22,772 |
| St. Mary's County Public Schools | St. Mary's County | 27 | 16,905 |
NCES Common Core of Data 2024 via the Urban Institute Education Data Portal.
Private and independent schools in Maryland
Alongside the public system, Maryland has 725 private schools teaching 134,249 students, averaging 185 pupils each. 275 of them have fewer than 50 students. 157 are Catholic. These buy differently from districts: no sealed-bid statute, no board warrant cycle, and a business manager who can agree a scope in a fortnight.
A 16,000 sq ft independent school in Maryland, cleaned nightly at Level 4 with the summer block and sitting inside a route with three or four other accounts, runs around $35,000 a year (0.181/sq ft/month). Small buildings price above the per-square-foot rate quoted for large ones — supervision, equipment and insurance do not scale down with the floor area.
NCES Private School Universe Survey 2023-24.
How private school cleaning works →
Metro areas we cover in Maryland
How we work in Maryland
We clean schools with crews we employ directly in the markets we staff, and through vetted partner contractors everywhere else. Either way you sign one contract with us, you get one point of contact, and we carry the insurance and the background-check obligation. When you ask for a quote we will tell you which of the two it would be in your town — before you sign, not after.
Every person who enters a school is screened before their first shift, whatever the state statute requires. Scope is written to a named APPA service level with a work-loading table showing the hours behind it, so you can see exactly what you are buying instead of comparing two numbers on a bid tab.