Home addition cost in Johnson City, TN
Local estimate from BLS wage data and BEA price levels. Reviewed Nov 4, 2026.
- Typical range (300 sq ft)
- $32,400 – $65,700
- Per sq ft
- $107 – $213
- before permit
- Versus US midpoint
- −15%
- US $57,500
- Rank of 300 metros
- #271
- 1 = most expensive
A home addition in Johnson City, TN usually costs $32,400 to $65,700 for 300 sq ft. That works out to about $107 to $213 per sq ft before permits. Compared with the national midpoint that is $8,450 less. Carpenters earn a median of $23.04 an hour in the Johnson City area, 21% below the US median of $29.12.
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Estimated cost for 300 sq ft in Johnson City, TN, standard level
$42,400 to $55,700
About $139 to $181 per sq ft before permits. Labor is about 62% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $15,000 | $19,600 |
| Labor | $26,600 | $34,700 |
| Permits and fees | $840 | $1,350 |
| Total | $42,400 | $55,700 |
Cost breakdown for 300 sq ft in Johnson City, TN
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $11,500 | $17,300 | $23,100 | 35% |
| Labor | $20,400 | $30,700 | $40,900 | 62% |
| Permits and fees | $440 | $1,100 | $1,750 | 2% |
| Total | $32,400 | $49,100 | $65,700 | 100% |
Where the Johnson City price comes from
Labor is 62% 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 Johnson City the blended ratio comes out at 0.80.
Materials are scaled with BEA's regional price parity for goods. Johnson City is at 96.2 against 100 for the US, so a materials line of $18,000 nationally becomes $17,300 here (midpoint, 300 sq ft). Permits follow the all-items index of 87.9: $440 to $1,750.
Data note: 30% of the labor weighting for this project uses a statewide median because BLS has no published metro figure for that trade in Johnson City. The wage table below marks each row.
Johnson City against nearby metros and the rest of Tennessee
Same job, same size (300 sq ft), priced for the nearest metros. Asheville is the priciest of the group at $51,100.
| Area | Range | Midpoint | vs. here |
|---|---|---|---|
| Johnson City, TNthis page | $32,400 – $65,700 | $49,100 | |
| Kingsport, TN25 miles | $32,700 – $66,200 | $49,400 | +1% |
| Asheville, NC45 miles | $33,700 – $68,400 | $51,100 | +4% |
| Hickory, NC60 miles | $32,500 – $65,900 | $49,200 | level |
| Knoxville, TN100 miles | $33,600 – $68,100 | $50,800 | +4% |
| Spartanburg, SC105 miles | $33,600 – $68,100 | $50,900 | +4% |
| Tennessee (statewide) | $33,800 – $68,600 | $51,200 | +4% |
| United States | $38,000 – $77,000 | $57,500 | +17% |
Out of the 300 metros we cover, Johnson City ranks #271 for the cost of this job (#1 is the most expensive). Statewide, Johnson City is 4% below the Tennessee figure.
Elsewhere in Tennessee
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Nashville, TN | 1,099,300 jobs | $35,300 – $71,600 | $53,500 | +9% |
| Memphis, TN | 611,670 jobs | $33,900 – $68,700 | $51,300 | +5% |
| Knoxville, TN | 424,600 jobs | $33,600 – $68,100 | $50,800 | +4% |
| Chattanooga, TN | 268,750 jobs | $34,000 – $68,900 | $51,500 | +5% |
| Kingsport, TN | 119,560 jobs | $32,700 – $66,200 | $49,400 | +1% |
| Clarksville, TN | 103,220 jobs | $33,000 – $66,900 | $50,000 | +2% |
Metros of a similar size
Big cities and small ones price differently, so here is Johnson City against the 4 metros with the closest total employment.
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Idaho Falls, ID | 81,840 jobs | $34,500 – $69,900 | $52,200 | +6% |
| Odessa, TX | 80,910 jobs | $33,900 – $68,700 | $51,300 | +5% |
| Hilton Head, SC | 81,920 jobs | $33,300 – $67,600 | $50,500 | +3% |
| Greenville, NC | 80,770 jobs | $32,300 – $65,500 | $48,900 | level |
Johnson City 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, Bristol Tri City Ap (10 miles from the city center). 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 Johnson City are March through November: 9 of 12. Outside them, January, February and December have an average overnight low at or below freezing (32°F).
In January, February 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 94 days a year with a low at or below 32°F at this station.
Johnson City gets about 44 inches of precipitation in a normal year, including roughly 9 inches of snow. The wettest months are March, June and July (5.0 inches in July). Inside the workable window, September and October are the driest, at 2.8 and 2.5 inches. The station averages about 23 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 | 47 | 26 | 3.6 | Cold |
| Feb | 51 | 29 | 3.8 | Cold |
| Mar | 59 | 35 | 4.0 | Workable |
| Apr | 69 | 43 | 3.8 | Workable |
| May | 77 | 52 | 3.8 | Workable |
| Jun | 84 | 61 | 3.9 | Workable |
| Jul | 86 | 65 | 5.0 | Workable |
| Aug | 86 | 63 | 3.8 | Workable |
| Sep | 81 | 56 | 2.8 | Workable |
| Oct | 70 | 44 | 2.5 | Workable |
| Nov | 59 | 34 | 3.1 | Workable |
| Dec | 50 | 29 | 3.8 | Cold |
What local crews earn in Johnson City
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 Johnson City the blend is 0.80.
Carpenters (47-2031), 50% of the weighting: a median of $23.04 an hour, 21% below the US median of $29.12. The middle half of them earn between $21.81 and $26.92 an hour. About 160 work in the metro. That is 19.6 per 10,000 jobs, compared with 43.1 nationally, so expect fewer local crews to bid.
Cement masons and concrete finishers (47-2051) carry 10% of the labor weighting. BLS does not publish this trade for the Johnson City metro, so we used the Tennessee statewide median: $23.04 an hour against $27.41 for the US. The middle half of them earn between $20.92 and $25.38 an hour.
For electricians (47-2111, weighted 10%) the local median is $25.09 an hour, which is 17% below the national $30.38. The middle half of them earn between $19.92 and $36.42 an hour. BLS counts 270 of them working in the area, 33.1 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 $23.31 an hour, 24% below the US median of $30.67. The middle half of them earn between $20.64 and $28.97 an hour. About 210 work in the metro. That is 25.7 per 10,000 jobs, compared with 30.0 nationally, so the supply of crews looks typical.
Drywall and ceiling tile installers (47-2081) carry 10% of the labor weighting. BLS does not publish this trade for the Johnson City metro, so we used the Tennessee statewide median: $22.84 an hour against $28.33 for the US. The middle half of them earn between $18.98 and $27.18 an hour.
Roofers (47-2181) carry 10% of the labor weighting. BLS does not publish this trade for the Johnson City metro, so we used the Tennessee statewide median: $21.97 an hour against $26.65 for the US. The middle half of them earn between $18.33 and $23.53 an hour.
A quick sensitivity check: moving the lead trade (carpenters) from the median to the 75th percentile wage adds about $2,550 to the midpoint estimate; the 25th percentile takes off about $810. That is a swing of roughly 1.6% to 5.2% of the total, which is useful for judging whether a bid reflects wages or something else, such as scope or margin.
Johnson City has 81,690 jobs in total (BLS, May 2025), ranking 234th 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% | $21.81 | $23.04 | $26.92 | $29.12 | 0.79 | metro |
| Cement masons and concrete finishers (47-2051) | 10% | $20.92 | $23.04 | $25.38 | $27.41 | 0.84 | state |
| Electricians (47-2111) | 10% | $19.92 | $25.09 | $36.42 | $30.38 | 0.83 | metro |
| Plumbers, pipefitters and steamfitters (47-2152) | 10% | $20.64 | $23.31 | $28.97 | $30.67 | 0.76 | metro |
| Drywall and ceiling tile installers (47-2081) | 10% | $18.98 | $22.84 | $27.18 | $28.33 | 0.81 | state |
| Roofers (47-2181) | 10% | $18.33 | $21.97 | $23.53 | $26.65 | 0.82 | state |
| Blended | 100% | 0.80 | |||||
Johnson City: what basic, standard and premium work costs
The cited range is split into basic, standard and premium bands, then scaled to Johnson City. 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
$32,400 to $45,700
Bump-out or simple room without plumbing
Standard
$42,400 to $55,700
Standard room addition with HVAC and electrical
Premium
$52,400 to $65,700
Large addition with bath or kitchen and a new foundation
| Size | Basic | Standard | Premium |
|---|---|---|---|
| bump-out (100 sq ft) | $11,100 – $15,900 | $14,700 – $19,500 | $18,300 – $23,100 |
| 20x20 room (400 sq ft) | $43,100 – $60,700 | $56,300 – $73,900 | $69,500 – $87,000 |
| large suite (600 sq ft) | $64,400 – $90,500 | $84,000 – $110,000 | $103,500 – $129,500 |
Planning more than one job in Johnson City?
Jobs that often go together with home addition are priced below at their usual sizes, using the same Johnson City wage and price inputs. Compared with national midpoints, kitchen remodel comes out highest (−7%) and bathroom remodel lowest (−13%); the gap comes from the trades each job uses.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Kitchen remodel | 120 sq ft | $17,100 – $29,100 | −7% |
| Bathroom remodel | 45 sq ft | $4,050 – $20,200 | −13% |
| Detached garage | 576 sq ft | $25,800 – $51,800 | −11% |
| Roof replacement | 2,000 sq ft of roof | $5,300 – $11,100 | −12% |
Home addition: what moves the price in Johnson City
Foundation
A foundation, framing, roofing and matching exterior finishes all have to be built before the interior work starts.
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.
Get 3 local quotes
Tell us about the job and we will try to connect you with up to three local contractors for written quotes. It is free and you are under no obligation to hire. Your estimate of $42,400 to $55,700 for Johnson City, TN is attached.
Detailed home addition report for Johnson City, TN, $9
Multi-page report for Johnson City, TN: low, typical and high cost, a line-item breakdown of materials and labor by trade, permit notes, the best months to schedule, a quote comparison sheet, red flags, questions for contractors, checklists and every source. Save your estimate above, preview page 1 free, and unlock the full report for $9 one-time, or get every report with CostLocal Pro.
Home addition in Johnson City: your questions
+How much does it cost to build a home addition in Johnson City?
For 300 sq ft, expect $32,400 to $65,700 in the Johnson City area. A standard-spec job lands at $42,400 to $55,700. Small jobs usually cost more per sq ft and large ones less.
+What is the price per sq ft for home addition in Johnson City?
About $107 to $213 per sq ft for materials and labor, plus $440 to $1,750 for the permit if one is needed. The US range is $125 to $250.
+Is home addition cheaper in Johnson City or Kingsport?
Kingsport is 25 miles away. The midpoint for 300 sq ft there is $49,400, which is 1% more than Johnson City ($49,100). Wage and materials indexes both feed that gap.
+How much of the bill is labor in Johnson City?
About 62% at the midpoint, or $30,700 out of $49,100. Materials are 35% and permits 2%. Nationally, labor is 67%.
+What would 20x20 room (400 sq ft) cost in Johnson City?
$43,100 to $87,000. Pick a different size in the estimator above to get your own number.
+Does home addition need a permit in Johnson City?
Often, but rules are set by your city or county building office, so call before you hire. Budget $440 to $1,750 for fees in the Johnson City area (our national range of $500 to $2,000 scaled by the local price level).
+Is Johnson City expensive for home addition compared with the rest of Tennessee?
Johnson City is 4% below the Tennessee statewide estimate ($51,200 at the midpoint). We cover 8 metros in Tennessee; see the state page to compare them.
+What do carpenters earn in Johnson City?
The BLS median is $23.04 an hour in the Johnson City area, compared with $29.12 nationally. The 25th to 75th percentile range is $21.81 to $26.92.
+What do basic and premium home addition work cost in Johnson City?
For 300 sq ft, basic work runs $32,400 to $45,700 and premium work $52,400 to $65,700. 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 Johnson City?
Based on NOAA 1991-2020 normals, the comfortable months for this kind of work are March through November. September and October 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 Johnson City
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.