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Change the Exterior

How to change the exterior style of a house plan

Love the floor plan, not the look? You can keep the layout and change the style — modern farmhouse, craftsman, modern or ranch. Here's what really changes on the drawings and what it costs.

By the CostToBuildHouse design team · Updated September 2026
Example modificationTap to compare
BED 212'-0" × 12'-0"BATHLAUNDRY12'-0" × 7'-0"MUDROOM12'-0" × 10'-0"KITCHEN20'-0" × 14'-0"GREAT ROOM20'-0" × 22'-0"PRIMARY18'-0" × 15'-0"BATHW.I.C.BED 318'-0" × 12'-0"2-CAR GARAGE22'-0" × 24'-0"72'-0"22'-0"50'-0"
BED 212'-0" × 12'-0"BATHWALK-IN PANTRY12'-0" × 7'-0"MUD / LAUNDRY12'-0" × 10'-0"KITCHEN20'-0" × 14'-0"GREAT ROOM20'-0" × 22'-0"PRIMARY18'-0" × 15'-0"BATHW.I.C.BED 318'-0" × 12'-0"3-CAR GARAGE32'-0" × 24'-0"82'-0"32'-0"50'-0"123

Three levels of exterior change

“Change the exterior” can mean a new paint scheme or a whole new house. It helps to know which you're asking for:

LevelWhat changesFloor planOur package
1. Materials & detailsSiding, trim, window grids, colors, porch columnsUnchangedMinor — $299
2. Facade restyleWindow sizes and placement, porch, gables, entry, garage doorsSmall tweaksStandard — $599
3. Full exterior redesignRoof form and pitch, massing, wall heights, all elevationsMay shiftMajor — from $999

Most “make it a modern farmhouse” requests land in level 2 or 3, because the look depends on the roof pitch and window pattern, not just the siding.

What defines each style

StyleRoofSignature details
Modern farmhouseSteep gables (often 8/12–12/12), standing-seam metal accentsBoard-and-batten, black windows, deep front porch
CraftsmanLow-pitch gables, wide overhangs, exposed rafter tailsTapered columns on piers, mixed siding, divided-lite upper sashes
Modern / contemporaryFlat, low-slope or shed roofsLarge glass, clean trim, mixed cladding, minimal ornament
Ranch / modern ranchLow, long hip or gableHorizontal lines, wide eaves, grouped windows
MediterraneanLow hip with tileStucco, arches, recessed windows

Not sure which you want? See what architectural style should I build?

Already have a plan you like?Upload it and we'll draw the change for you — Standard Modification, $599. Scope confirmed in 1 business day.
Upload my plan

The roof decides everything

You can't turn a low hip-roof ranch into a modern farmhouse with siding alone. The steep front gable is the style. Changing roof form means redrawing:

  • Roof plan — new pitches, ridges and valleys.
  • All four elevations — wall heights, window heads and porch roofs have to line up with the new roof.
  • Sections — ceiling heights, attic space and any vaulted rooms.
  • Framing notes — steeper roofs change truss design and sometimes wall bracing.

The good news: the floor plan usually stays almost the same. See how roof choices move cost in roof design and cost.

Exterior choices that move the budget

  • Roof complexity — every extra gable, valley and dormer adds framing, flashing and labor.
  • Roofing material — metal costs more than asphalt up front but lasts longer. Compare in asphalt vs. metal roof cost.
  • Cladding — vinyl, fiber cement, wood, brick and stone vary several-fold per square foot.
  • Window count and size — large black-frame windows are a big line item.
  • Porches — a deep full-width porch adds foundation, framing and roofing.

More: modern vs. traditional design — which costs more?

Choose your style
What architectural style should you build?

Compare the most popular styles by look, cost and how well they suit your lot and climate.

Compare styles

What changing the exterior costs

ChangeOur package
New materials, trim, window grids and colorsMinor — $299
Facade restyle: windows, porch, gables, garage doorsStandard — $599
Full exterior redesign with a new roof formMajor — from $999
3D exterior render of the new look+$149

We recommend the 3D render for any facade change — it's much easier to approve a look you can see than a line drawing.

How to get your exterior restyled

  1. Upload your plan and 2–3 photos of houses whose look you love.
  2. Tell us the style, materials, colors and anything you want to keep.
  3. We confirm scope within 1 business day — including whether the roof has to change.
  4. We redraw the elevations and roof, plus the render if you added it. Two revision rounds included.

Frequently asked questions

Can you change the exterior of a house plan without changing the floor plan?

Usually, yes. Materials, trim, windows and porches can change with little or no floor plan impact. A new roof form may shift ceiling heights or small wall positions.

Can you turn my plan into a modern farmhouse?

Yes. Most modern farmhouse conversions need steeper front gables, a new window pattern and board-and-batten or similar siding. It is typically a Standard Modification ($599), or Major if the whole roof changes.

Do I get to see the new exterior before building?

Yes. You receive updated elevations to review, and you can add a 3D exterior render (+$149) to see the look realistically.

How much does it cost to change a house plan exterior?

Materials and details: $299. A facade restyle: $599. A full exterior redesign with a new roof: from $999.

Can you modify a plan I bought from another website?

Yes — provided you own the plan or have permission / the right to modify it.

Related guides & tools

Keep the plan you love. Change what doesn't work.

Upload any plan you own or have the right to modify. Our in-house team redraws it — two revision rounds included.

Modify My Plan — $599