Home addition cost in Hagerstown, MD
Local estimate from BLS wage data and BEA price levels. Reviewed Nov 4, 2026.
- Typical range (300 sq ft)
- $35,900 – $72,800
- Per sq ft
- $118 – $236
- before permit
- Versus US midpoint
- −5%
- US $57,500
- Rank of 300 metros
- #155
- 1 = most expensive
A home addition in Hagerstown, MD usually costs $35,900 to $72,800 for 300 sq ft. That works out to about $118 to $236 per sq ft before permits. Compared with the national midpoint that is $3,100 less. Carpenters earn a median of $27.21 an hour in the Hagerstown area, 7% below the US median of $29.12.
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Estimated cost for 300 sq ft in Hagerstown, MD, standard level
$47,000 to $61,800
About $154 to $201 per sq ft before permits. Labor is about 66% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $15,000 | $19,700 |
| Labor | $31,100 | $40,600 |
| Permits and fees | $890 | $1,450 |
| Total | $47,000 | $61,800 |
Cost breakdown for 300 sq ft in Hagerstown, MD
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $11,600 | $17,400 | $23,100 | 32% |
| Labor | $23,900 | $35,800 | $47,800 | 66% |
| Permits and fees | $470 | $1,200 | $1,900 | 2% |
| Total | $35,900 | $54,400 | $72,800 | 100% |
Why Hagerstown prices look the way they do
Labor is 66% of the midpoint bill here, against 67% nationally. The mix of trades behind this job is carpenters (50%), cement masons and concrete finishers (10%), electricians (10%), plumbers, pipefitters and steamfitters (10%), drywall and ceiling tile installers (10%), roofers (10%). We weight each trade's local median wage by that share and compare it with the national median. In Hagerstown the blended ratio comes out at 0.94.
Materials are scaled with BEA's regional price parity for goods. Hagerstown is at 96.4 against 100 for the US, so a materials line of $18,000 nationally becomes $17,400 here (midpoint, 300 sq ft). Permits follow the all-items index of 94.2: $470 to $1,900.
Data note: 20% of the labor weighting for this project uses a statewide median because BLS has no published metro figure for that trade in Hagerstown. The wage table below marks each row.
Cost by quality level and size in Hagerstown
The cited range is split into basic, standard and premium bands, then scaled to Hagerstown. Bands overlap, because plenty of standard jobs cost as much as a light premium one. Sizes run from bump-out (100 sq ft) to large suite (600 sq ft).
Basic
$35,900 to $50,700
Bump-out or simple room without plumbing
Standard
$47,000 to $61,800
Standard room addition with HVAC and electrical
Premium
$58,100 to $72,800
Large addition with bath or kitchen and a new foundation
| Size | Basic | Standard | Premium |
|---|---|---|---|
| bump-out (100 sq ft) | $12,300 – $17,600 | $16,300 – $21,600 | $20,200 – $25,500 |
| 20x20 room (400 sq ft) | $47,800 – $67,200 | $62,400 – $81,800 | $77,000 – $96,500 |
| large suite (600 sq ft) | $71,400 – $100,500 | $93,100 – $122,000 | $115,000 – $143,500 |
Specs and site conditions that change a Hagerstown bid
Type of addition
A new room is $125-$250 per sq ft; a bump-out $85-$200; an attic conversion $50-$150; a garage conversion $50-$200 (HomeGuide).
Plumbing and fixtures
Adding a bathroom or kitchen drives the price up the most.
Permits
Construction permits run $500-$2,000, or $5-$21 per $1,000 of project cost (HomeGuide).
Is Hagerstown cheap or dear? The local comparison
Contractors rarely work more than an hour or two from home, so the neighboring metros set a rough ceiling and floor for your quotes. Midpoints for 300 sq ft range from $51,500 to $60,100 across Hagerstown and its five closest metros.
| Area | Range | Midpoint | vs. here |
|---|---|---|---|
| Hagerstown, MDthis page | $35,900 – $72,800 | $54,400 | |
| Chambersburg, PA30 miles | $35,600 – $72,100 | $53,900 | −1% |
| Winchester, VA30 miles | $34,000 – $68,900 | $51,500 | −5% |
| Washington, DC55 miles | $39,700 – $80,500 | $60,100 | +11% |
| Altoona, PA65 miles | $36,500 – $73,900 | $55,200 | +1% |
| York, PA70 miles | $38,700 – $78,300 | $58,500 | +8% |
| Maryland (statewide) | $39,100 – $79,300 | $59,200 | +9% |
| United States | $38,000 – $77,000 | $57,500 | +6% |
Out of the 300 metros we cover, Hagerstown ranks #155 for the cost of this job (#1 is the most expensive). Statewide, Hagerstown is 8% below the Maryland figure.
Elsewhere in Maryland
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Baltimore, MD | 1,356,680 jobs | $38,100 – $77,300 | $57,700 | +6% |
| Lexington Park, MD | 70,650 jobs | $37,900 – $76,900 | $57,400 | +6% |
Metros of a similar size
Big cities and small ones price differently, so here is Hagerstown against the 4 metros with the closest total employment.
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Columbia, MO | 107,680 jobs | $35,900 – $72,600 | $54,200 | level |
| Champaign, IL | 105,500 jobs | $42,500 – $85,900 | $64,200 | +18% |
| Bend, OR | 108,240 jobs | $42,300 – $85,600 | $64,000 | +18% |
| St. Cloud, MN | 103,920 jobs | $40,600 – $82,100 | $61,300 | +13% |
Hagerstown weather and the home addition calendar
Climate numbers on this page come from NOAA's 1991-2020 U.S. Climate Normals at the nearest suitable station, Hagerstown 1 E (in the city). They are 30-year averages, so any one year can run hotter, colder or wetter.
For digging, grading and setting material in the ground, the comfortable months in Hagerstown are April through November: 8 of 12. Outside them, January, February, March and December have an average overnight low at or below freezing (32°F).
In January, February, March and December the average low is at or below freezing, which means frozen ground and slower digging, compaction and sod or stone placement. NOAA counts about 103 days a year with a low at or below 32°F at this station.
Hagerstown gets about 44 inches of precipitation in a normal year. The wettest months are March, May and September (4.8 inches in September). Inside the workable window, October and November are the driest, at 3.4 and 2.9 inches. The station averages about 32 days a year at 90°F or above.
We do not adjust the estimate by month, because we have no reliable published data on seasonal pricing. It is still worth asking contractors whether an off-peak start date changes their bid.
| Month | Avg high °F | Avg low °F | Precip (in) | For this job |
|---|---|---|---|---|
| Jan | 40 | 22 | 3.2 | Cold |
| Feb | 44 | 25 | 2.7 | Cold |
| Mar | 53 | 32 | 3.9 | Cold |
| Apr | 65 | 41 | 3.9 | Workable |
| May | 74 | 53 | 4.3 | Workable |
| Jun | 83 | 62 | 3.4 | Workable |
| Jul | 86 | 66 | 3.7 | Workable |
| Aug | 85 | 65 | 3.7 | Workable |
| Sep | 78 | 56 | 4.8 | Workable |
| Oct | 66 | 45 | 3.4 | Workable |
| Nov | 54 | 34 | 2.9 | Workable |
| Dec | 44 | 27 | 3.7 | Cold |
Related projects, priced for Hagerstown
Jobs that often go together with home addition are priced below at their usual sizes, using the same Hagerstown wage and price inputs. Compared with national midpoints, roof replacement comes out highest (+2%) and bathroom remodel lowest (−8%); the gap comes from the trades each job uses.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Kitchen remodel | 120 sq ft | $17,600 – $30,000 | −5% |
| Bathroom remodel | 45 sq ft | $4,350 – $21,500 | −8% |
| Detached garage | 576 sq ft | $27,500 – $55,200 | −5% |
| Roof replacement | 2,000 sq ft of roof | $6,300 – $12,700 | +2% |
What local crews earn in Hagerstown
The labor line is built from BLS wage data, one trade at a time. This job draws on 6 trades. We compare each trade's local median with the US median, weight the ratios by how much of the job each trade does, and apply the blend to the national labor cost. For Hagerstown the blend is 0.94.
Carpenters (47-2031), 50% of the weighting: a median of $27.21 an hour, 7% below the US median of $29.12. The middle half of them earn between $21.25 and $29.80 an hour. About 350 work in the metro. That is 32.7 per 10,000 jobs, compared with 43.1 nationally, so expect fewer local crews to bid.
Cement masons and concrete finishers (47-2051), 10% of the weighting: a median of $22.95 an hour, 16% below the US median of $27.41. The middle half of them earn between $20.15 and $26.16 an hour. About 80 work in the metro. That is 7.5 per 10,000 jobs, compared with 13.3 nationally, so expect fewer local crews to bid.
For electricians (47-2111, weighted 10%) the local median is $29.96 an hour, which is in line with the national $30.38. The middle half of them earn between $23.99 and $37.57 an hour. BLS counts 430 of them working in the area, 40.1 for every 10,000 jobs (US: 48.7), so the local bench is thinner than average.
Plumbers, pipefitters and steamfitters (47-2152), 10% of the weighting: a median of $26.50 an hour, 14% below the US median of $30.67. The middle half of them earn between $22.06 and $32.67 an hour. About 250 work in the metro. That is 23.3 per 10,000 jobs, compared with 30.0 nationally, so expect fewer local crews to bid.
Drywall and ceiling tile installers (47-2081) carry 10% of the labor weighting. BLS does not publish this trade for the Hagerstown metro, so we used the Maryland statewide median: $26.29 an hour against $28.33 for the US. The middle half of them earn between $22.96 and $29.22 an hour.
Roofers (47-2181) carry 10% of the labor weighting. BLS does not publish this trade for the Hagerstown metro, so we used the Maryland statewide median: $28.89 an hour against $26.65 for the US. The middle half of them earn between $23.20 and $36.08 an hour.
A quick sensitivity check: moving the lead trade (carpenters) from the median to the 75th percentile wage adds about $1,700 to the midpoint estimate; the 25th percentile takes off about $3,900. That is a swing of roughly 7.2% to 3.1% of the total, which is useful for judging whether a bid reflects wages or something else, such as scope or margin.
Hagerstown-Martinsburg has 107,170 jobs in total (BLS, May 2025), ranking 195th by size among the 300 metros on this site.
| Trade | Weight | 25th pct | Median | 75th pct | US median | Ratio | Level used |
|---|---|---|---|---|---|---|---|
| Carpenters (47-2031) | 50% | $21.25 | $27.21 | $29.80 | $29.12 | 0.93 | metro |
| Cement masons and concrete finishers (47-2051) | 10% | $20.15 | $22.95 | $26.16 | $27.41 | 0.84 | metro |
| Electricians (47-2111) | 10% | $23.99 | $29.96 | $37.57 | $30.38 | 0.99 | metro |
| Plumbers, pipefitters and steamfitters (47-2152) | 10% | $22.06 | $26.50 | $32.67 | $30.67 | 0.86 | metro |
| Drywall and ceiling tile installers (47-2081) | 10% | $22.96 | $26.29 | $29.22 | $28.33 | 0.93 | state |
| Roofers (47-2181) | 10% | $23.20 | $28.89 | $36.08 | $26.65 | 1.08 | state |
| Blended | 100% | 0.94 | |||||
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Detailed home addition report for Hagerstown, MD, $9
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Home addition in Hagerstown: your questions
+How much does it cost to build a home addition in Hagerstown?
For 300 sq ft, expect $35,900 to $72,800 in the Hagerstown area. A standard-spec job lands at $47,000 to $61,800. Small jobs usually cost more per sq ft and large ones less.
+What is the price per sq ft for home addition in Hagerstown?
About $118 to $236 per sq ft for materials and labor, plus $470 to $1,900 for the permit if one is needed. The US range is $125 to $250.
+Is home addition cheaper in Hagerstown or Chambersburg?
Chambersburg is 30 miles away. The midpoint for 300 sq ft there is $53,900, which is 1% less than Hagerstown ($54,400). Wage and materials indexes both feed that gap.
+How much of the bill is labor in Hagerstown?
About 66% at the midpoint, or $35,800 out of $54,400. Materials are 32% and permits 2%. Nationally, labor is 67%.
+What would 20x20 room (400 sq ft) cost in Hagerstown?
$47,800 to $96,500. Pick a different size in the estimator above to get your own number.
+Does home addition need a permit in Hagerstown?
Often, but rules are set by your city or county building office, so call before you hire. Budget $470 to $1,900 for fees in the Hagerstown area (our national range of $500 to $2,000 scaled by the local price level).
+Is Hagerstown expensive for home addition compared with the rest of Maryland?
Hagerstown is 8% below the Maryland statewide estimate ($59,200 at the midpoint). We cover 3 metros in Maryland; see the state page to compare them.
+What do carpenters earn in Hagerstown?
The BLS median is $27.21 an hour in the Hagerstown area, compared with $29.12 nationally. The 25th to 75th percentile range is $21.25 to $29.80.
+What do basic and premium home addition work cost in Hagerstown?
For 300 sq ft, basic work runs $35,900 to $50,700 and premium work $58,100 to $72,800. Basic means: bump-out or simple room without plumbing. Premium means: large addition with bath or kitchen and a new foundation.
+When is the best time to build a home addition in Hagerstown?
Based on NOAA 1991-2020 normals, the comfortable months for this kind of work are April through November. October and November are typically the driest of those months. Local contractors' schedules matter as much as the weather, so book early for the busy months.
Home addition near Hagerstown
Where these numbers come from
Base prices are national ranges from the sources below. We scale labor by local BLS wages, materials by BEA goods prices and permits by the BEA all-items price level. Full method on the methodology page.
- HomeGuide: How Much Does a Home Addition Cost? (2026) (accessed November 4, 2026)
- Cost to Renovate: Renovation Labor Report 2026: Where the Money Goes (accessed November 4, 2026)
- HomeGuide: 2026 Building Permit Costs | Fees & Cost Calculator (accessed November 4, 2026)
- BLS Occupational Employment and Wage Statistics, May 2025
- BEA Regional Price Parities, 2024
- NOAA NCEI U.S. Climate Normals, 1991-2020
Note on derived figures: Materials = 32% of the installed price, from Cost to Renovate's mid-range 'Structural' category split (56% labor, 32% materials, 11% permits and design). It is a category average rather than an addition-specific figure.