Whole-home remodeling in Frederick
Cost vs. Value doesn't price whole-house renovations, but in its 2025 Washington, DC market the pieces add up quickly: a major midrange kitchen at $79,9881, a midrange bath at $25,9361 and a basement remodel at $52,7571. Around Frederick the factor that shapes the plan most is which side of the city line the house sits on, because the county's permit office works from its own adoption of the 2021 residential code, while inside city limits the city issues the permits and, in the historic district, its preservation commission reviews anything that changes the outside.
Calls are recorded. One independent company that handles whole-home remodels in the Frederick area answers.
Updated October 12, 2026

Adding up the rooms in the Washington market
There is no Cost vs. Value figure for Frederick County, or for a renovation of a whole house. What the 2025 report does price, for its Washington, DC market, are the separate projects a full renovation usually strings together, shown here beside the national averages for the same jobs.
| Measure | Washington, DC market | U.S. average |
|---|---|---|
| Major kitchen remodel, midrange, job cost | $79,9881 | $82,7932 |
| Midrange bathroom remodel, job cost | $25,9361 | $26,1382 |
| Basement remodel, job cost | $52,7571 | $52,0122 |
| HVAC conversion (electrification), job cost | $20,2781 | $19,4841 |
Frederick sits at the outer edge of that market, so read these as a starting range rather than a quote. Ask for the heating and cooling work on a line of its own, since 51%3 of the county's homes already heat with electricity and the rest may be weighing a switch.
Three eras of Frederick County houses
A renovation that reaches every room meets every decade of repairs the house has had. Census counts give Frederick County a bigger share of 1990s houses than the Washington metro, a similar share from the 1980s, and more houses from before 1940.
| Measure | Frederick County | Washington metro |
|---|---|---|
| Homes built 1990–1999 | 19%4 | 13%4 |
| Homes built 1980–1989 | 14%4 | 15%4 |
| Homes built before 1940 | 11%4 | 8%4 |
A house from the 1980s or 1990s often reaches a full renovation with its windows, heat pump and builder baths all wearing out together, which makes it a systems job as much as a finishes job. A house from before 1940 brings plaster, old wiring and the chance of lead paint into the scope.
More rooms to decide on
The Census Bureau counts rooms rather than square feet, and leaves bathrooms, halls and unfinished basements out. A larger share of Frederick County's homes reach nine rooms or more than homes across the Washington metro do.
| Measure | Frederick County | Washington metro |
|---|---|---|
| Homes with nine or more rooms | 27%5 | 23%56 |
In a house that size, the rooms you leave alone matter as much as the finish level. One way to keep the total in hand is to take on the kitchen, the primary suite and the systems first and leave spare bedrooms for a later round.
How the house is heated now
A whole-house job is often when the heating system is replaced too. Frederick County relies more on electric heat and less on utility gas than the Washington metro, and a small share of its homes burn bottled or tank propane.
| Measure | Frederick County | Washington metro |
|---|---|---|
| Homes heated with electricity | 51%3 | 45%7 |
| Homes heated with utility gas | 34%3 | 48%7 |
| Homes heated with bottled, tank or LP gas | 4%3 | – |
Cost vs. Value put an electrification job at $20,2781 in the Washington market. If the furnace or heat pump is near the end of its life, fold its replacement into the renovation so new ducts can be run while ceilings are open.
Weighing the job against the house
Frederick County's median owner-occupied home is worth less than the Washington metro median, so a renovation that touches every room takes up more of the house's value here than it would closer to the city.
The trades a full renovation keeps busy
BLS doesn't publish wages for Frederick County or its metropolitan division, so these are medians for the whole Washington metro set beside the national figures. Carpenters stay longest on a whole-house job; the electrician and plumber return at each rough-in.
| Measure | Washington metro | United States |
|---|---|---|
| Carpenters, median hourly wage | $29.23/hr9 | $29.12/hr9 |
| Electricians, median hourly wage | $36.50/hr9 | $30.38/hr9 |
| Plumbers, median hourly wage | $34.55/hr9 | $30.67/hr9 |
Carpenters in the region earn close to the national median, while electricians and plumbers earn well above it. Planning the rewiring and repiping as one rough-in, rather than room by room, saves return trips by the trades that cost the most here.
Permits
Outside the City of Frederick and Mt. Airy, Frederick County's permit office reviews a whole-house renovation under the residential code it adopted, and issues the building, electrical and plumbing permits separately. The county's quicker process only covers small interior alterations that leave bearing walls and the floor plan alone, which a full renovation rarely does. Inside the city, applications go through the city's online portal under its own code adoption, and in the historic district the preservation commission's approval has to be in hand before the permit application goes in.
- Frederick County requires approval for modifications or alterations to any building, and applications are made through the county's online Application Portal.10
- For permit applications submitted from July 20, 2024, Frederick County applies the 2021 International Residential Code with county amendments, the 2021 International Energy Conservation Code and the 2023 National Electrical Code, and it lists the Maryland Building Rehabilitation Code as its code for rehabilitation work.11
- In Frederick County, electrical and plumbing permits are separate from the building permit, with separate fees, and the building permit is applied for by the owner or a licensed contractor unless the applicant has a notarized letter of permission.12
- Frederick County's expedited permit process for residential uses covers a minor interior alteration that doesn't involve a load-bearing wall or a change to the floor plan.13
- The City of Frederick's Building/Permits department, part of its Department of Public Works, takes residential permit applications, plans and fees online through its OpenGov permit portal, where applicants also check permit status and request inspections.14
- For permits applied for after December 31, 2025, the City of Frederick applies the 2021 International Residential Code in place of the 2015 edition, along with the 2023 National Electrical Code.15
- In the City of Frederick, a permit application that also needs Historic Preservation Commission approval must include the HPC Certificate of Approval, with any conditions of approval met before the application is submitted.16
Checked October 12, 2026
Before you hire
Ask for the company's Maryland Home Improvement Commission (MHIC) license number and look it up yourself, because Maryland's Guaranty Fund only steps in for work done by MHIC-licensed contractors.
Talk to a pro who handles whole-home remodels in Frederick
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Renovating a farmhouse or an in-town rowhouse
11%4 of the county's homes went up before 1940, from farmhouses along the back roads to brick rowhouses near Carroll Creek. Unless a lead-based paint inspection shows otherwise, the EPA says to treat paint in homes built before 1978 as if it contains lead.17 When every room is being opened, that means lead-safe setup in each one. For homes built before 1978, the EPA advises hiring contractors who use only lead-safe certified renovators.18
The EPA lists vinyl floor tile, vinyl sheet backing and flooring adhesives among products that may contain asbestos, which is released mainly when the material is disturbed.19 Layers of old flooring in a farmhouse kitchen or a rowhouse back room are worth sampling before a demolition date is set. The EPA advises having an accredited asbestos professional inspect before a remodel that could disturb suspect materials, and not sanding or power-stripping suspect flooring yourself.20
Where the City of Frederick has applied a Historic Preservation Overlay, it regulates the exterior of the designated building, and the Historic Preservation Commission must approve all exterior work there except minor rehabilitation.21 The City of Frederick's Historic Preservation Commission has authorized its staff to review and approve some rehabilitation work, as long as it complies with the guidelines.21 Rewiring and new kitchens inside a downtown house are building-permit matters, but new windows, doors, siding or a rear addition bring the commission into a whole-house plan.
Renovating a 1980s or 1990s subdivision house
19%4 of the county's homes date from the 1990s alone, in the subdivisions that spread out from Frederick toward Urbana, Ballenger Creek and Walkersville. In those houses a full renovation tends to be about systems coming due at the same time as the finishes, so get the heat pump, water heater and windows assessed before the design is settled.
When alterations, repairs or additions that need a permit are made, the 2021 International Residential Code requires the home to have smoke alarms where a new house would, including in each bedroom, outside each sleeping area and on every story; exterior-only work and plumbing or mechanical work are exempt.22 When branch-circuit wiring is modified, replaced or extended in kitchens, family rooms, dining rooms, living rooms, bedrooms, hallways, laundry areas and similar rooms, the 2021 International Residential Code requires arc-fault (AFCI) protection for that circuit, unless the extension is no more than 6 feet long and adds no outlets or devices.23 Expect alarms and arc-fault protection to be brought up to date in rooms the plan barely touches.
Living in the house during the work
For very dusty work such as demolition, the EPA describes isolating the work area: sealing it off with no direct access to the occupied rooms, with workers using a separate entrance until cleanup is done.17 A finished lower level or a bonus room over the garage can serve as living space while the main floor is torn out; keep a working bathroom and somewhere to wash dishes on that side of the plastic.
The EPA recommends testing for radon before remodeling a basement, because fixing a radon problem is usually easier and less expensive before the basement is finished.18 The Maryland Department of Health says Maryland residents may be eligible for a free radon test kit, through the Maryland Department of the Environment.24
Planning for later years
More than one in four adults 65 and older fall each year.25 With walls open on every floor, blocking for grab bars, a wider hall doorway and a full bath on the entry level are easier to add now than as a separate project later. NAHB's Certified Aging-in-Place Specialist (CAPS) credential trains remodelers in home modifications for aging in place.26
Maryland's Independent Living Tax Credit returns up to 50% of the cost of renovations that make a home more accessible, up to $5,000, for work on your own home, a family member's home or a rental property.27 Frederick County's Senior Rehab Grant Program provides grants of up to $15,000 for emergency repairs and accessibility modifications to very low income senior homeowners.28
What happens when you call
The number on this page connects you, on a recorded line, with one independent company that handles whole-home remodels in the Frederick area. Which rooms, in what order and at what price are settled between you and that company.
That company pays us for the call. You pay us nothing, and no one from our side will call or text you later. How we make money
After you're connected
Before a deposit changes hands, look the company up yourself. Maryland's Home Improvement Commission licenses home improvement contractors and salespersons, and its License Search shows whether a license is current.29 The City of Frederick doesn't license home improvement contractors; they must be licensed by the State of Maryland.30 Check a Maryland license
Then agree in writing who takes out each permit. In Frederick County, electrical and plumbing permits are separate from the building permit, with separate fees, and the building permit is applied for by the owner or a licensed contractor unless the applicant has a notarized letter of permission.12 In Frederick County, an electrical or plumbing permit is applied for by the licensed person, or by a property owner who passes the county's Homeowner Electrical or Plumbing Exam, and that person must be the one doing the work.12
Questions people ask
What does a whole-house renovation cost around Frederick?
There's no published price for a whole house. For single projects, Cost vs. Value's 2025 Washington, DC report lists a major midrange kitchen at $79,9881, a midrange bath at $25,9361 and an electrification job at $20,2781; your total is the rooms you pick plus the wiring, plumbing and heating that tie them together.
Which building code applies to my renovation?
It depends on who issues the permit. For permit applications submitted from July 20, 2024, Frederick County applies the 2021 International Residential Code with county amendments, the 2021 International Energy Conservation Code and the 2023 National Electrical Code, and it lists the Maryland Building Rehabilitation Code as its code for rehabilitation work.11 For permits applied for after December 31, 2025, the City of Frederick applies the 2021 International Residential Code in place of the 2015 edition, along with the 2023 National Electrical Code.15
My house is downtown. Does the historic district limit what I can change?
Mainly the outside. Where the City of Frederick has applied a Historic Preservation Overlay, it regulates the exterior of the designated building, and the Historic Preservation Commission must approve all exterior work there except minor rehabilitation.21 In the City of Frederick, a permit application that also needs Historic Preservation Commission approval must include the HPC Certificate of Approval, with any conditions of approval met before the application is submitted.16
Can a full renovation use the county's faster permit process?
Usually not. Frederick County's expedited permit process for residential uses covers a minor interior alteration that doesn't involve a load-bearing wall or a change to the floor plan.13 Moving walls or rearranging rooms takes a project outside that track.
Sources
Page updated October 12, 2026. How we source our numbers
- Zonda / Journal of Light Construction, Cost vs. Value 2025, Washington, DC. Released 2025. Washington, DC. Industry source.
- Zonda / Journal of Light Construction, Cost vs. Value 2025, national. Released 2025. United States. Industry source.
- U.S. Census Bureau, American Community Survey 2020–2024 5-year, table B25040. Released January 29, 2026. Frederick County, MD.
- U.S. Census Bureau, American Community Survey 2020–2024 5-year, table B25034. Released January 29, 2026. Frederick County, MD, Washington-Arlington-Alexandria metro.
- U.S. Census Bureau, American Community Survey 2020–2024 5-year, table B25017. Released January 29, 2026. Frederick County, MD, Washington-Arlington-Alexandria metro.
- U.S. Census Bureau, American Community Survey 2020-2024 5-year, Table B25024 (Units in Structure). Released January 29, 2026. Washington-Arlington-Alexandria metro.
- U.S. Census Bureau, American Community Survey 2020-2024 5-year, Table B25040 (House Heating Fuel). Released January 29, 2026. Washington-Arlington-Alexandria metro.
- U.S. Census Bureau, American Community Survey 2020–2024 5-year, table B25077. Released January 29, 2026. Frederick County, MD, Washington-Arlington-Alexandria metro.
- U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics, May 2025. Released May 15, 2026. Carpenters, Washington-Arlington-Alexandria metro, Carpenters, United States, Electricians, Washington-Arlington-Alexandria metro, Electricians, United States, Plumbers, Washington-Arlington-Alexandria metro, Plumbers, United States.
- Frederick County Government, Division of Planning and Permitting, Building Permits and Zoning Certificates. No publication date. View source.
- Frederick County Government, Division of Planning and Permitting, Regulations and Ordinances (adopted building codes). Released May 21, 2024. View source.
- Frederick County Government, Division of Planning and Permitting, Residential Building Permit Information: Addition, Alteration & Accessory. Released September 2025. View source.
- Frederick County Government, Division of Planning and Permitting, Expedited Permit Process – Residential Uses. Released July 1, 2025. View source.
- City of Frederick, Building / Permits. No publication date. View source.
- City of Frederick, Building Codes. No publication date. View source.
- City of Frederick, One-Stop Shop. No publication date. View source.
- U.S. Environmental Protection Agency, Best Practices for Indoor Air Quality when Remodeling Your Home. Released June 23, 2026. View source.
- U.S. Environmental Protection Agency, Remodeling Your Home and Indoor Air Quality. Released February 17, 2026. View source.
- U.S. Environmental Protection Agency, Learn About Asbestos. Released July 13, 2026. View source.
- U.S. Environmental Protection Agency, Protect Your Family from Exposures to Asbestos. Released June 25, 2026. View source.
- City of Frederick, Historic Preservation. No publication date. View source.
- International Code Council, 2021 International Residential Code, Chapter 3 Building Planning. Released 2021. View source. Industry source.
- International Code Council, 2021 International Residential Code, Chapter 39 Power and Lighting Distribution. Released 2021. View source. Industry source.
- Maryland Department of Health, Radon. No publication date. View source.
- Centers for Disease Control and Prevention, Facts About Older Adult Falls. Released September 4, 2026. View source.
- National Association of Home Builders, Certified Aging-in-Place Specialist (CAPS). No publication date. View source. Industry source.
- Maryland Department of Housing and Community Development, Independent Living Tax Credit. No publication date. View source.
- Frederick County Government, Division of Housing, Housing Rehabilitation Programs. No publication date. View source.
- Maryland Department of Labor, Maryland Home Improvement Commission. No publication date. View source.
- City of Frederick, Licensed Contractors. No publication date. View source.