Build cost breakdown · Burlingame, CA Verified August 2026
Prefab Homes in Burlingame, CA: 2026 Cost & Permit Guide
Construction costs, ADU rules, and what to expect from factory-built homes on the San Francisco Peninsula.
Prefab home construction in Burlingame typically runs $250–$350/sqft (excluding land, foundation, and site work), or $500–$700/sqft all-in.
Based on recent local project data and contractor quotes for Burlingame, CA. All-in figures include land and site costs; construction-only figures include finishes, fixtures, and appliances per Plant Prefab pricing reported by ABC7 News.
- $250–$350/sqft Prefab construction cost (excl. land) Per local contractor quotes
- $500–$700/sqft All-in prefab cost (incl. land/site) Based on completed Burlingame projects
- $1,100–$1,200/sqft Traditional stick-built cost Average for Burlingame per local data
- 60 days ADU permit review window City of Burlingame Ordinance 2035
Prefab Home Due-Diligence Checklist — Burlingame
- Confirm lot zoning allows the proposed unit type (ADU, detached home, etc.) under City of Burlingame ordinance
- Verify your parcel's overlay zone — Hillside Overlay Zone applies a 25 ft height cap on attached ADUs
- Request an itemized quote separating factory cost ($250–$350/sqft) from foundation, site prep, and utility connections
- Confirm the manufacturer's modules meet California Building Code seismic requirements for your foundation type
- Check ADU size against City caps: 1,000 sq ft max for detached/attached; 500 sq ft for Junior ADUs
- Budget for coastal-grade exterior finishes given Burlingame's fog and humidity exposure
- Plan permit timeline: City review required within 60 days, typical approval 3–4 months (Ordinance 2035)
- Obtain a written schedule separating factory lead time from on-site installation and final inspection phases
What Prefab Homes Actually Cost in Burlingame
The cost of a prefab or modular home in Burlingame splits into two distinct buckets that are frequently conflated in project quotes. Factory construction — covering the structure, finishes, fixtures, and appliances — runs approximately $250–$350 per square foot, based on pricing reported by Southern California manufacturer Plant Prefab for Peninsula deliveries (per ABC7 News). That figure does not include land acquisition, foundation engineering, utility connections, or site preparation, which together push the all-in cost to $500–$700 per square foot for completed Burlingame projects.
A completed reference point: a 3,000 sq ft, 4-bed/3-bath modern prefab home built in Burlingame by TobyLong Design and CleverHomes (Oakland-based, 6114 La Salle Avenue #552) came in at an all-in cost within the $500–$700/sqft range with an estimated 18-month completion timeline. By contrast, a nearly 5,000 sq ft, 6-bedroom Plant Prefab home in Burlingame was assembled on-site in approximately two days after off-site construction in Los Angeles — a schedule compression the project team attributed to roughly 30% savings on construction time.
- Factory build cost: $250–$350/sqft (structure, finishes, appliances)
- All-in cost including land and site work: $500–$700/sqft
- Traditional stick-built alternative: $1,100–$1,200/sqft in Burlingame
- On-site assembly can compress to days; total project timelines still run 12–18+ months
Prefab ADUs: A Separate Cost Category
Accessory dwelling units represent a distinct segment of Burlingame's prefab market, with dedicated providers and their own pricing structure. Prefab ADU construction in Burlingame runs $250–$350 per square foot, consistent with the broader prefab construction range — though ADU all-in costs per square foot can run higher proportionally because fixed site and utility costs are spread over a smaller footprint.
Abodu, a prefab ADU provider that lists Burlingame among its active service areas, cites installation timelines as short as six months from contract to occupancy. That timeline contrasts with the 12–18-month window typical for a full prefab home. The City of Burlingame caps detached and attached ADUs at 1,000 sq ft and Junior ADUs (which must remain within existing single-family home walls) at 500 sq ft, per the City's ADU Ordinance — meaning a prefab ADU buyer is working within a defined size envelope before the first design conversation.
- Prefab ADU construction: $250–$350/sqft per local quotes
- Maximum detached/attached ADU size: 1,000 sq ft (City of Burlingame ADU Ordinance)
- Junior ADU cap: 500 sq ft, must be within existing home walls
- Abodu quotes ~6-month installation timelines for Burlingame ADU projects
Burlingame Permit Rules for Prefab and Modular Construction
Prefab and modular homes in Burlingame must clear the same local permitting process as any new residential construction. For ADUs specifically, the City of Burlingame (under Ordinance 2035) is required to review complete permit submissions within 60 days; in practice, most ADU permits are approved within 3–4 months per City Planning and Building Department records.
Height limits are calibrated by unit type and location: a standard detached ADU is capped at 16 feet; that limit rises to 18 feet near a major transit stop or on a multifamily lot, and to 20 feet if the roofline matches the primary home's pitch. Attached ADUs can reach 30 feet or the underlying zone limit (whichever is lower), with a 25-foot ceiling in the Hillside Overlay Zone. All detached ADUs require 4-foot side and rear setbacks and a 4-foot separation from other structures. Crucially, setback requirements do not apply to conversions or same-footprint rebuilds — a distinction that can meaningfully affect site feasibility. All ADUs, regardless of delivery method, require a permanent foundation per City design standards; no balconies, rooftop terraces, or second-story decks are permitted.
- City ADU permit review: within 60 days; typical approval 3–4 months (Ordinance 2035)
- Detached ADU height: 16 ft standard, up to 20 ft with matching roof pitch
- Attached ADU height: up to 30 ft; capped at 25 ft in Hillside Overlay Zone
- 4-ft side/rear setbacks required; waived for conversions and same-footprint rebuilds
- Permanent foundation required for all prefab/modular ADU installations
Climate and Site Factors on the San Mateo County Coast
Burlingame's coastal Bay Area climate introduces site-specific variables that affect both material selection and long-term performance of prefab structures. Persistent coastal fog and humidity require exterior cladding and moisture management systems engineered for high-moisture environments — a specification that should be verified explicitly in any factory build contract, since standard product lines may not include coastal-grade finishes by default.
Seismic zone requirements are a non-negotiable constraint: all modular and prefab installations must use permanent, seismically compliant foundations, which is already required by City design standards but carries cost and engineering implications beyond what inland markets typically require. On the energy side, Burlingame prefab projects have frequently incorporated EV charging infrastructure, living roofs, and recycled or low-embodied-carbon materials — driven partly by local design culture and partly by California's energy code requirements for new residential construction.
- Specify coastal-grade exterior cladding for fog and humidity resistance
- Seismically compliant permanent foundations required — confirm engineering specs
- California Title 24 energy compliance applies to all new prefab construction
- EV hookups and sustainable materials are common local design inclusions
Evaluating Manufacturers and Builders Serving Burlingame
Several manufacturers and design-build firms have documented project histories in Burlingame or explicitly serve the market. Plant Prefab (Southern California-based) delivers to the Peninsula and was identified in ABC7 News reporting as quoting $250–$350/sqft for Bay Area projects. CleverHomes, operating under TobyLong Design out of Oakland (6114 La Salle Avenue #552), completed the 3,000 sq ft Burlingame Residence project documented across multiple design publications. Abodu focuses specifically on prefab ADUs and lists Burlingame as an active service market. Impresa Modular operates as a nationwide modular provider with California delivery coverage that includes Burlingame.
These firms are cited here as examples identified through research, not as endorsements. When evaluating any provider, homeowners should request itemized quotes that separate factory cost from site/foundation/utility work, verify the manufacturer's California Building Code (CBC) compliance documentation, and confirm how seismic and coastal specifications are handled in the standard contract.
- Request itemized quotes separating factory cost from all site-work line items
- Verify CBC compliance and third-party inspection records for any modular manufacturer
- Confirm coastal and seismic specifications are explicit — not assumed — in the contract
- Check City of Burlingame Planning for any active design review requirements in your zone
FAQ
How much does a prefab home cost in Burlingame, CA in 2026?
Factory construction costs run $250–$350 per square foot, covering the structure, finishes, fixtures, and appliances but excluding land, foundation, and site work. All-in project costs for completed Burlingame prefab homes have come in at $500–$700 per square foot, based on local project data. For comparison, traditional stick-built construction in Burlingame averages $1,100–$1,200 per square foot.
How long does it take to build a prefab home in Burlingame?
Total project timelines typically run 12–18 months when accounting for design, permitting, factory production, delivery, and site work. On-site assembly itself can be compressed dramatically — one Plant Prefab project in Burlingame (nearly 5,000 sq ft) was assembled on-site in approximately two days after factory production in Los Angeles. ADU-specific providers like Abodu cite timelines as short as six months for smaller units.
What are the ADU size limits for prefab units in Burlingame?
Under the City of Burlingame ADU Ordinance, detached and attached ADUs are capped at 1,000 square feet. Junior ADUs — which must be located within the walls of an existing single-family home — are capped at 500 square feet. These limits apply regardless of construction method, including prefab and modular delivery.
Do prefab homes in Burlingame require a permanent foundation?
Yes. City of Burlingame ADU Design Standards require a permanent foundation for all ADUs, including those delivered as prefab or modular units. California's seismic zone requirements add engineering specifications that go beyond what's typical in non-seismic markets — foundation design should be reviewed by a licensed structural engineer familiar with San Mateo County conditions.
How long does ADU permitting take in Burlingame?
The City of Burlingame is required under Ordinance 2035 to review complete ADU permit submissions within 60 days. In practice, most permits are approved within 3–4 months per City Planning and Building Department data. Incomplete submissions restart the clock, so submitting a fully documented application is critical to hitting that timeline.
Are there height limits for prefab ADUs in Burlingame?
Yes. Standard detached ADUs are limited to 16 feet. That cap rises to 18 feet if the unit is near a major transit stop or on a multifamily lot, and to 20 feet if the roofline matches the primary home's pitch. Attached ADUs can reach up to 30 feet (or the underlying zone limit), except in the Hillside Overlay Zone where the cap is 25 feet and a maximum of 2 stories applies.
Which prefab manufacturers serve Burlingame, CA?
Based on research, manufacturers and providers with documented Burlingame presence include Plant Prefab (Southern California, Peninsula delivery), CleverHomes/TobyLong Design (Oakland-based, completed a 3,000 sq ft Burlingame project), Abodu (prefab ADU specialist), and Impresa Modular (nationwide coverage). These are examples identified through public project records and provider listings — not endorsements.
Cost ranges vary significantly based on lot conditions, foundation requirements, and manufacturer. A site-specific quote from a licensed contractor or modular provider familiar with Burlingame's permitting environment is the most reliable way to establish a project budget.
Cost ranges vary significantly based on lot conditions, foundation requirements, and manufacturer. A site-specific quote from a licensed contractor or modular provider familiar with Burlingame's permitting environment is the most reliable way to establish a project budget.
Get a Local Cost Estimate (opens in new tab)| Construction Type | Cost Range (per sqft) | Scope |
|---|---|---|
| Prefab home (construction only) | $250–$350 | Structure, finishes, fixtures, appliances; excludes land/foundation/site work |
| Prefab home (all-in) | $500–$700 | Full project cost including land acquisition and site costs |
| Prefab ADU | $250–$350 | Factory construction cost; site/utility costs add to total |
| Traditional stick-built home | $1,100–$1,200 | Average all-in cost for Burlingame stick-built construction |
Costs based on 2025–2026 data from public sources + local permit records.