Design-Build Contractor in Rockville, MD
A Century of Rockville Housing — Every Era, Renovated Right
Rockville's neighborhoods were built across more than 100 years of American architecture, and each era carries its own design language, construction techniques, and modernization needs. Understanding that range is what separates a Rockville design-build contractor from a generalist who treats every home the same way:
Lincoln Park & Old Rockville
1910s–1940s
Cedar-shingled homes, cape cods, and pre-war bungalows with historic character, original woodwork, and conditions that require careful structural and systems assessment before renovation.
1950s–1970s Neighborhoods
1950s–1970s
Split-levels and ranches that define mid-century Rockville — full of potential for open-concept conversions, primary suite additions, and basement finish work, with wiring and plumbing that often need upgrading.
1980s–1990s Developments
1980s–1990s
Modern colonials and large detached homes with established layouts, increasingly renovated toward today's open, light-filled living with updated kitchens, primary suites, and finished basements.
Southern Rockville Estates
1995–Today
Newer luxury homes and large contemporary-style residences on Rockville's southern estates — renovated with premium finishes, high design, and the highest structural standards.
A Design-Build Firm Homegrown in the Community
🏗️ Rooted in Montgomery County. DMV-GC Group is a North Bethesda-headquartered general contractor with a deep track record across Rockville — from the corridor south of Route 28 through the city's historic core. We pair industry-savvy general contractors with our full-service architecture and engineering team and our own in-house construction crews. For Rockville that means a design-build contractor who is close to your site, familiar with the neighborhoods, and fluent in MoCo DPS permitting — from pre-war cedars to contemporary estates.
Our In-House Design-Build Team for Rockville Projects
Design-Build Services We Offer in Rockville, MD
Kitchen Remodeling
Full design-build kitchen renovations across Rockville's housing — from 1930s cedar kitchens to 1990s colonial kitchens to contemporary luxury kitchens. Custom cabinetry, quartz or granite counters, premium appliances, and layouts redesigned for the way Rockville families cook and gather. Load-bearing walls for open-concept kitchens engineered before demolition. Professional-grade appliances and finishes specified by our architects.
Primary Suite & Bathroom Renovation
Primary bedroom suites and spa-quality bathrooms for Rockville homes — expansions that reclaim underused space, walk-in closets, heated tile floors, freestanding tubs, and frameless glass showers. Whether converting a mid-century split-level first floor or renovating a contemporary master suite, our architects design layouts that add real value and comfort.
Basement Remodeling
Finished basements across Rockville — family rooms, home theaters, gyms, bars, and rental suites. Recreation and lower-level apartments with below-grade bathrooms and egress windows where needed. Basement remodeling is one of the most cost-effective ways to add usable square footage to Rockville's split-levels, ranches, and colonials.
House Additions
Rear additions, second-story additions, and side additions for Rockville's detached homes — designed within Rockville's zoning and MoCo DPS permitting requirements. Room for primary suites, expanded kitchens, home offices, and in-law quarters. Matched rooflines, windows, and exterior finishes that make the addition look original to the home. Structural engineering included.
ADU & In-Law Suite Construction
Accessory dwelling units and in-law suites throughout Rockville — detached ADUs, converted garages, and lower-level units. Each requires a MoCo DPS building permit, must meet zoning and building codes, and must receive a U&O Certificate before occupancy. We design the unit to code, file the permit in-house, coordinate inspections, and deliver a legal, complete in-law suite or rental unit.
Whole-Home Renovation
Comprehensive transformation of Rockville single-family homes — kitchen, bathrooms, basement, flooring, electrical upgrade, HVAC modernization, and finishes under one coordinated contract. The design-build model keeps a single accountable team across a full renovation, avoiding the fragmentation of managing separate architects and contractors. Ideal for the city's larger detached homes and estates.
Electrical & Systems Upgrade
For Rockville's older homes, this frequently means addressing outdated wiring and panel capacity. Panel upgrades from 100A to 200A+, full or partial rewiring, EV charger installation, whole-home generators, and smart-home wiring. Our in-house electricians bundle system modernization into renovation scope so panel and wiring work happens while walls are already open.
Plumbing & Mechanical
Kitchen and bath reconfiguration, basement bath rough-ins, tankless water heater installation, and galvanized-supply replacement in older Rockville homes. Licensed, in-house plumbing ensures your renovation's water systems are code-compliant and durable — essential in the city's pre-war and mid-century housing where aging pipes are common.
Design-Build Process for Rockville Homes
Free Consultation — Era Identified, Scope Discussed
We visit your Rockville home, identify its era and construction, and assess structure, systems, and layout. We discuss your goals and — for older homes — note the specific conditions that affect scope, such as outdated wiring, galvanized piping, or unknown structural status. For add-ons we confirm what your specific lot allows. No cost, no obligation.
Concept Design & Budget
Our architects develop concept designs tailored to your home's era and layout — kitchen layouts, suite expansions, basement floor plans, addition massing, or ADU designs meeting MoCo dimensional standards. We deliver an accurate design-build budget covering design, permits, and construction.
Design Development & Material Selection
Detailed construction drawings and material selections — cabinetry, countertops, tile, flooring, fixtures, and finishes. For additions, structural engineering of foundations, beams, and framing. For ADUs, full drawings to MoCo DPS standards including energy and dimensional documentation.
Permit Filing — MoCo DPS, Managed In-House
Complete permit package filed with MoCo DPS, with all supporting drawings and documentation. We manage review, responses, and approval — homeowners never navigate the county process alone. For ADUs, we additionally coordinate any required county licensing so your unit is fully legal.
Construction by Licensed In-House Trades
Demolition, framing, electrical, plumbing, HVAC, drywall, tile, cabinetry, flooring, and finishes — executed by our own licensed trades. For older Rockville homes, careful demolition that protects original character. One project manager. Weekly updates.
Inspections, Punch List & Permit Close
All MoCo DPS inspections scheduled and managed through final approval. Detailed punch list review, permit close, written warranty documentation. For ADUs: final U&O Certificate obtained so your rental or in-law suite is fully legal.
Design-Build Project Costs in Rockville, MD
| Project Type | Typical Design-Build Cost in Rockville | Design & Permits Included |
|---|---|---|
| Kitchen Remodel | $45,000 – $175,000+ | Layout, renderings, custom spec, MoCo DPS permit |
| Primary Bathroom Renovation | $30,000 – $100,000+ | Layout, fixtures, tile spec, MoCo DPS permit |
| Basement Remodel | $50,000 – $150,000+ | Floor plan, egress/bath specs, MoCo DPS permit |
| House Addition | $250,000 – $800,000+ | Zoning-compliant arch. drawings, structural eng., permit |
| ADU / In-Law Suite | $80,000 – $250,000+ | MoCo-standard design, DPS permit, U&O Certificate |
| Whole-Home Renovation | $150,000 – $600,000+ | Comprehensive design, systems upgrade, permit |
What Rockville Homeowners Say About DMV-GC Group
"We renovated our 1936 Lincoln Park cedar from top to bottom — kitchen, bath, and rewiring from the original knob-and-tube. DMV-GC Group preserved the historic woodwork where it mattered and modernized everything else. It was the first contractor who actually understood how to renovate an old house without losing its character."
"Our 1970s Rockville split-level got a complete open-concept conversion, new kitchen, and finished basement with a full bath. DMV-GC Group's structural engineers handled the load-bearing wall correctly and the whole thing wrapped up on schedule. The split-level finally feels like it was designed for modern living."
"DMV-GC Group built a detached in-law suite in our Rockville backyard so my parents could live independently. Architecture, engineering, MoCo DPS permit, construction — all in-house, all handled. It's fully permitted and beautiful. We've recommended them to three neighbors already."
"The team renovated our 1990s colonial kitchen and both upstairs bathrooms. Premium finishes, excellent craftsmanship, and permits managed through MoCo DPS without us lifting a finger. A completely professional design-build experience."
⭐ 4.9-star rated with 97+ verified reviews. Rockville homeowners choose DMV-GC Group because we renovate every era of this city's housing right — with in-house architects, engineers, permit specialists, and trades under one design-build contract, plus genuine MoCo DPS mastery for kitchen, bath, basement, addition, and ADU work.
Serving Rockville, MD Neighborhoods
Also serving North Bethesda, MD — immediately south
North Bethesda shares Rockville's Montgomery County building codes and MoCo DPS permitting, with a distinct mix of R-60 detached homes, planned development townhomes, and an ADU-friendly housing market. DMV-GC Group brings the same design-build standards southward. View our full design-build service page →