Real cost ranges for Osaka, Japan, priced in JPY. Every row is what homeowners actually spend across the scope spectrum — the low end is a pull-and-replace on the existing footprint, the high end is a full custom build with premium finishes.
~1 min readUpdated 18 Apr 2026
Cabinets, counters, appliances, and plumbing/electrical updates drive the range. The top of the band reflects full layout changes and premium finishes; the bottom holds for pull-and-replace scopes on the existing footprint.
Scope yours with Baily in OsakaTile, fixtures, and waterproofing are the big drivers. Primary and ensuite bathrooms with walk-in showers or freestanding tubs sit near the top of the band; hall baths come in closer to the bottom.
Scope yours with Baily in OsakaDetached units and garage conversions vary most by square footage, foundation type, and utility runs. Where local law does not recognize ADUs, this row maps to the nearest annex / granny-flat / laneway equivalent.
Scope yours with Baily in OsakaWhole-home scope covers all trades plus permitting, structural, MEP, and finishes. Historic properties, listed buildings, and seismic-retrofit markets sit well above the median.
Scope yours with Baily in OsakaMaterial choice (asphalt shingle, tile, standing-seam metal, membrane) dominates the range. Pitch, access, and city-specific wind/fire codes add the rest.
Scope yours with Baily in OsakaComposite decking, hardwood, pavers, and concrete slab are the main price bands. Elevated decks and outdoor-kitchen integrations push the high end.
Scope yours with Baily in OsakaFraming, insulation, egress windows, and waterproofing move together. Adding a bathroom or full kitchen pushes the cost well above the base finish scope.
Scope yours with Baily in OsakaGunite, vinyl-liner, and fiberglass each have distinct price bands. Spa integration, water features, and decking lift the top of the range.
Scope yours with Baily in OsakaPrep work (siding repair, pressure wash, priming) is the hidden driver. Coastal and high-UV markets use specialty coatings that cost more but last longer.
Scope yours with Baily in OsakaHardwood, LVP, tile, and stone span a wide range. Subfloor repair and leveling for old construction add meaningful cost on top of the finish material.
Scope yours with Baily in OsakaBailyに大阪のリノベーションをご相談いただければ、十二社の工務店から次々に連絡が来ることはございません。大阪の住宅事情は東京とも神戸とも異なり、独自の文脈をもっております。北区梅田周辺のタワーマンション、中央区心斎橋・難波の商業地区に隣接する住宅、阿倍野区天王寺の戦前長屋、豊中・吹田の郊外戸建て、芦屋・西宮の阪神間モダニズム住宅は、それぞれ異なる設計手法、異なる近隣配慮、異なる行政窓口を要求いたします。大阪市都市計画局と各区役所、大阪府建築振興課、そして2025年日本国際博覧会（大阪・関西万博）後の夢洲・此花区のゾーニング見直しなど、地域特有の規制環境をBailyは把握しております。HomeProudのように一件のご相談を十二社に分配することはせず、建設業許可を有し、関西圏で実績のある工務店を一社だけご紹介いたします。阪神・淡路大震災（1995年）以降、耐震意識が特に高い関西で、監理技術者と一級建築施工管理技士を擁する工務店が、ご提案から完工まで一貫して担当することに意味があると私たちは考えております。
Read the full Osaka guideCost ranges are only half the picture. See how one-builder scoping compares to a bid fan-out before you talk to either.
Tell Baily what you are planning. You will get one vetted local builder, not a pool of strangers. No lead auction, no resold contact details.
Open the Osaka hub