Custom Home Building & General Contracting in Bethesda and the DMV
From Blueprint to Move-In, One Team
Building a home is a hundred decisions and a dozen trades — the value of a design-build firm is that one team owns all of it. iDesign designs and builds new custom homes, manages teardown-rebuilds, and serves as general contractor for residential and commercial projects across the DMV. The same designers behind our interior design, kitchen, and bathroom work plan your home from the blueprint stage, so the finished house works room by room — not just on paper.
Most new construction inside the Beltway-adjacent neighborhoods of Bethesda, Chevy Chase, and North Bethesda is teardown-rebuild: a 1950s rambler on a great lot replaced by a home built for how families live now. Those projects rise or fall on the site rules — Montgomery County lot coverage and setback limits decide the buildable envelope, tree-save and sediment control plans gate the demolition permit, and county development impact taxes belong in the budget from day one. We design within those constraints from the first sketch, which is how a project avoids the redesign-and-resubmit cycle that stalls so many builds. Farther out, in Potomac, Rockville, and Gaithersburg, we build on open lots and take on major additions that grow an existing home instead.
A custom home means custom selections — and our North Bethesda showroom in the Pike District puts cabinetry, stone, tile, flooring, and fixtures in one place, so selections happen on schedule instead of holding up the build. Plan a visit to the showroom to see how we work.
Our Building & Contracting Services Include:
- Custom home design, blueprints, and permit drawings
- New home construction and teardown-rebuilds
- General contracting and construction project management
- Whole-home renovations and structural reconfiguration
- Accessory buildings: garages, studios, and ADUs
- Commercial construction and build-outs
- Exterior and interior finishing for new builds
Our Building Process
- 1
Feasibility & Budget
Lot analysis, zoning envelope, and a realistic all-in budget.
- 2
Design & Blueprints
Floor plans, elevations, engineering, and permit submissions.
- 3
Construction
From foundation through finishes, with county inspections at every stage.
- 4
Walkthrough & Warranty
Punch list, final inspections, and warranty-backed handover.
Thinking About Building?
Start with a feasibility conversation — your lot, your budget, and what's actually buildable.
Get a Free QuoteThree Ways to Work With Us
Design-Build Custom Home
The full path: we design your home, draw the blueprints, pull the permits, and build it. One contract, one team, and design decisions made with construction cost in view — so the home you fall in love with on paper is the one you can actually afford to build.
Teardown & Rebuild
For owners and buyers of older homes on good lots in Bethesda, Chevy Chase, and North Bethesda. We handle demolition permits, utility disconnects, tree-save and sediment control, and design the new home to the lot's zoning envelope from the start.
General Contracting
Already have plans, or running a commercial project? We serve as general contractor and project manager: bidding and supervising trades, holding the schedule, managing inspections and budget, and owning quality through the final walkthrough.
A Builder That Sweats the Interiors
Most builders frame a great shell and rush the inside; we came at it from the opposite direction. After 25+ years and 2,700+ projects of kitchens, baths, and whole-home renovations across the DMV, we build new homes the way we finish them — with the cabinetry, tile, lighting, and trim work held to remodel-grade standards, because that's the part of the house you touch every day. Our crews are licensed and insured for both remodeling and new home construction in Maryland.
25+
Years Serving the DMV
2,700+
Completed Projects
1
Contract, Design to Keys
Frequently Asked Questions About Building in the DMV
How much does it cost to build a custom home in Bethesda?
Custom home construction in the Bethesda area typically runs $275-$450+ per square foot depending on finishes, site conditions, and complexity — so a 4,000-5,000 square foot home usually lands between $1.2M and $2.5M for construction, not counting the lot. Teardown-rebuild projects add demolition, utility disconnects, and county development impact taxes to the budget, and we price all of it in the initial proposal.
How long does new home construction take?
Plan on 4-8 months for design, engineering, and Montgomery County permitting, then 10-16 months of construction depending on size and weather. Teardown-rebuilds add a demolition permit and sediment-control approval up front. We give you a milestone schedule at contract and report against it throughout the build.
Do you handle teardown and rebuild projects?
Yes — teardown-rebuilds are a large share of new construction in close-in Montgomery County, where 1950s ramblers sit on lots worth more than the houses. We manage the demolition permit, utility disconnects, tree-save and sediment control plans, and the new build, and we design within the lot coverage and setback rules that determine how big the new home can be.
Can you be the GC for a project we already designed?
Yes. Alongside our design-build work, we take on general contracting and construction project management for homes and commercial projects: scheduling and supervising trades, county inspections, budget tracking, and quality control through final walkthrough. We are licensed and insured for both remodeling and new home construction in Maryland.
What Does It Cost to Build in the Bethesda Area in 2026?
| Project Scope | Estimated 2026 Cost* |
|---|---|
| Custom home design & blueprintsFloor plans, elevations, engineering, and permit drawings; often credited when we build. | $15,000 – $60,000 |
| New custom home constructionConstruction cost excluding land; finish level drives the range. | $275 – $450+ / sq ft |
| Teardown & rebuild (all-in construction)Demolition, site work, impact taxes, and a 4,000-6,000 sq ft new home. | $1.4M – $3M+ |
| Accessory building / detached studioGarages, studios, and ADUs on existing lots. | $60,000 – $250,000 |
| General contracting / project managementGC services on projects designed by your architect. | 10 – 20% of build cost |
*These figures are rough planning estimates only. Your actual quote will depend on in-home measurements and the current cost of materials and labor at the time of your project, as well as the specific finishes and scope you choose. For an accurate price, schedule a free in-home consultation with our team.
Home Building Services in the DMV Area
We build and manage construction projects throughout Maryland, DC, and Northern Virginia, including:
Bethesda, MD
North Bethesda, MD
Chevy Chase, MD
Potomac, MD
Rockville, MD
Gaithersburg, MD
Silver Spring, MD
Washington, DC
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What Our Clients Say
Five-star reviews from homeowners across the DMV area.
Kitchen Remodel & Custom Addition
This was our fourth project with iDesign in the past couple of years, and they impress us every time — the office responds quickly and the crews show up when promised. For our full kitchen renovation and custom addition, the showroom team explained every phase and worked in everything on our list. They even matched the paint and style of the addition to the rest of the house, something other contractors had told us was impossible.
Roger
Multi-Room Home Remodel
iDesign made our dream home happen. Coordinating separate contractors for a multi-room remodel had been a struggle, but working with one design team and their own crews took all of that stress away. Communication was excellent from start to finish across nearly 2,400 square feet of renovation — including the kitchen, which had felt overwhelming before. We are grateful to the whole team.
Man J.
Full Condo Remodel
Our condo received a stunning top-to-bottom remodel: a flawless kitchen transformation, a bathtub-to-shower conversion, popcorn ceiling encapsulation, and new recessed lighting that brightens the whole space. The craftsmanship is exceptional, and the customer service made a major renovation completely stress-free.
Elena D.
Second-Story Addition & Rental Prep
We were on a hectic timeline preparing our house as a rental before moving out of the DMV, and we could not have navigated it without iDesign. They built a custom second-story addition, replaced the kitchen backsplash, installed a new bathroom vanity, and repainted several rooms — and they connected us with a licensed architect for the DC permits, which saved us a huge headache. Their attentiveness and input were invaluable.
Rami B.
Emergency Repair & Bathroom Remodel
When water started leaking through our ceiling one morning, the iDesign team and their plumber were at our house within hours and quickly traced it to a pipe under the bathroom floor. The price they offered was so good that we ended up redoing the entire bathroom. The work was wonderful, finished quickly, and barely disrupted our routine — we would call them again without hesitation.
Claudia F.
Visit Our Showroom
Building a home means hundreds of selections — make them in one place at our North Bethesda showroom.
iDesign Interior Solutions · North Bethesda, MD
(301) 881-1115 · Mon–Fri 9am–6pm · Sat 9am–6pm · Sun 10am–3pm