How to build a house in Baja California Sur, step by step
Building in Baja California Sur runs from budget and team to surveys, utilities, the permit, construction and recording the new house on your deed. Costs are shown as estimate ranges; get line-item quotes from at least three builders.
The steps, in order
- Budget: construction cost per m²
A sanity check on what a house costs to build in BCS, excluding land, permits and design fees. - Hire the architect, licensed site engineer (DRO), permit runner (gestor) and contractors
Architect: designs the house. DRO (Director Responsable de Obra): a licensed professional who signs plans and takes legal responsibility for the work, plus co-responsible specialists where… - Topographic survey (contour plan)
A contour (topographic) survey with UTM coordinates, if the one from step 1.15 isn't detailed enough. The state land-use filing (step 4.10) won't be accepted without it. - Environmental impact study (MIA, federal through SEMARNAT or state)
An environmental review. Works in coastal ecosystems, or that clear native vegetation, can need a federal MIA (Manifestación de Impacto Ambiental) or a preventive report from SEMARNAT, or a… - Hurricane season and wind design
Designing for hurricane winds and storm water. BCS is hit regularly (the Eastern Pacific season runs May 15–Nov 30, with the highest risk roughly Aug–Oct). - Solar and off-grid power
Rooftop solar tied to the CFE grid (with net metering), or a fully off-grid system with batteries. - Water, well and septic
Securing water and wastewater: a network connection, or a cistern plus trucked water, or a licensed well; and a septic system where there's no sewer. - Soils study and percolation test
A geotechnical soils study (mecánica de suelos) for the structural design, and a percolation test for the septic design. - Electricity hookup (CFE)
An electrical feasibility request, a construction or temporary supply, and later the permanent contract (step 4.29). If you add solar, there's an interconnection contract too. - Building permit (licencia de construcción)
The municipal building permit, also called the building license. - Construction contract and payment schedule
Sign a written construction contract in Spanish, with an English copy, that sets the scope, plans, materials, price type (fixed or cost-plus), payment milestones, timeline, penalties… - Social security for construction workers (IMSS)
Registering the construction project (obra) with IMSS (the Mexican social security institute) through SIROC and paying workers' social security. - Builder's risk insurance during construction
A construction all-risk policy (seguro de obra civil) that covers the work, the materials on site and damage to neighbors until the house is finished. - Inspections and the site logbook (bitácora)
Municipal inspections and the DRO's site logbook. - Materials and suppliers in Baja
Plan materials for a peninsula: many items come from mainland Mexico or the US, so prices and lead times can be higher outside La Paz and Los Cabos. Choose salt- and sun-resistant materials… - Permanent electricity contract (CFE)
Switching from the construction supply to a permanent residential contract, with its own meter. - Water and sewer connection (OOMSAPAS)
The water utility's contract and connection (toma) with a meter for the finished house, after the water feasibility (step 4.14). - Update Catastro (and record the new construction)
A cadastral filing (manifestación catastral) adding the house to the cadastral record, which raises predial. Then record the house on the deed (step 4.32). - Record the house on the deed (declaración de obra nueva)
A notarial deed declaring the new construction, recorded at the RPPC. With a fideicomiso the bank signs it too.
Common questions
How much does it cost to bring power to a lot?
CFE quotes extensions case by case. Remote lots can be expensive; compare with off-grid solar.
Why keep invoices (CFDI)?
They prove your costs and improvements, which lowers capital-gains tax when you sell.
Do I need a permit to build?
Yes: land use, street alignment and a building license from your municipality's Desarrollo Urbano, signed by a DRO.
What is a DRO?
The Director Responsable de Obra, a licensed professional who signs plans and is responsible for the construction meeting regulations.
Do I need an environmental permit?
Coastal, protected or large projects may need a federal or state environmental review (MIA).
Do I have to register construction workers?
Yes, construction must be registered with IMSS. Make sure your contract says who handles it.