| Quick Answer
A whole-house remodel in Concord generally runs from around $200,000 for a comprehensive cosmetic and systems update to $600,000 or more where walls move and systems are fully replaced. Most projects take six to twelve months on site. The biggest decision is not the budget it is whether to do it in one go or in phases. |
What a whole-house remodel actually means
The phrase covers a wide range, which is why cost figures for it are close to meaningless without a scope. In practice most whole-house projects in Concord fall into one of three shapes.
| Type | What it involves | Typical range | On site |
|---|---|---|---|
| Comprehensive refresh | Kitchen and bathrooms replaced, flooring throughout, paint, lighting, some electrical brought to code. Layout largely unchanged | $200,000 – $320,000 | 4 – 7 months |
| Reconfiguration | The above plus walls moved, an open-plan living area created, plumbing and electrical relocated, possibly a bathroom added | $320,000 – $500,000 | 7 – 11 months |
| Full gut and systems replacement | Down to the studs. New electrical service, all plumbing, HVAC, insulation, windows, roof, structural upgrades and seismic work | $500,000 – $800,000+ | 10 – 18 months |
Ranges assume a typical 1,500 to 2,200 square foot Concord home. They exclude additions, ADUs and significant site or foundation work.
Phased or all at once?
This is the decision that shapes everything else, and there is no universally right answer.
All at once
Cheaper per unit of work and faster overall. Trades mobilise once. Demolition happens once. Protection and dust containment happen once. There is a single permit set, a single inspection sequence, and a single project management overhead. If you can vacate, this is almost always the more efficient route.
The trade-off is that you almost certainly cannot live in it, and the cash requirement is concentrated.
Phased
More expensive in total, sometimes fifteen to twenty-five percent more, because trades come back repeatedly and each phase carries its own set-up and protection costs. It can also mean multiple permit sets.
But it lets you stay in the house, spreads the spend over years, and lets you learn from the first phase before committing to the second. For a great many households it is the difference between the project happening and the project being postponed indefinitely.
The sequence that works for phasing
If you phase, the order matters. Systems before surfaces, always.
- Systems and structure first. Electrical service, plumbing mains, HVAC, roof, seismic and foundation work, insulation. It is unpleasant to spend the first phase’s budget on things nobody can see, but doing surfaces before systems means tearing out new work later.
- Kitchen next. It is the room that most affects daily life and the one with the longest lead times.
- Bathrooms. One at a time if there is more than one, so the household is never without.
- Living and sleeping areas. Flooring, trim, paint, built-ins.
- Exterior and landscaping last. It is the phase most tolerant of delay and the one that construction traffic will damage anyway.
How the money is staged
In California the deposit on a home improvement contract is capped at the lesser of $1,000 or ten percent of the contract price. Everything after that should follow completed and, where applicable, inspected work.
| Milestone | Typical share |
|---|---|
| Deposit (statutory cap) | Lesser of $1,000 or 10% |
| Permits issued, materials ordered, demolition complete | 15% |
| Framing and structural work complete, inspected | 15% |
| Rough-in trades complete, all rough inspections passed | 15% |
| Insulation and drywall complete | 10% |
| Cabinetry set, countertops templated | 15% |
| Flooring, tile and paint complete | 15% |
| Substantial completion | 10% |
| Punch list closed and final sign-off | 5% |
Two things to look for in any proposed schedule. First, that payments follow inspections on the phases that have them paying for rough-in before it passes inspection transfers the risk to you. Second, that a genuine retention sits at the end. A schedule that reaches ninety-eight percent at substantial completion gives you almost no leverage on a punch list.
What Concord’s housing stock tends to reveal
A large share of Concord’s single-family homes were built between the 1950s and the 1970s. That vintage brings a predictable set of findings once the walls are open. None of these are unusual, none reflect badly on the house, and all of them are cheaper to plan for than to discover.
- Undersized electrical service. A 100-amp panel, sometimes less, against a modern load of induction cooking, EV charging, heat pump HVAC and a home office. A service upgrade is common and involves the utility, which has its own timeline.
- Aluminium branch wiring in some homes of that era, which needs specific remediation rather than simply being left alone.
- Galvanised supply piping, which corrodes internally and restricts flow. Once part of it is opened, replacing the rest is usually the sensible call.
- Little or no wall insulation, and often minimal ceiling insulation. Adding it during a gut remodel is inexpensive and transformative for comfort and running costs.
- Original single-glazed windows with aluminium frames, which are both a comfort and a Title 24 compliance issue on a substantial remodel.
- Cripple walls and unbolted foundations on some raised-floor homes, which is a seismic retrofit question and is worth addressing while the house is already open.
- Cast-iron waste lines at the end of their service life.
A ten to fifteen percent contingency on a whole-house project in a home of this age is not caution. It is the budget.
Do you need to move out?
For a full gut, yes. There will be periods with no water, no power and no heating, and there will be dust in places dust should not go.
For a comprehensive refresh or a phased project, often no. What makes staying workable is sequencing and containment: temporary kitchen facilities, a bathroom kept live, negative-pressure dust containment on the active zone, and a written weekly schedule so the household knows what is happening.
The cost comparison is worth doing properly. Six months of rent for a family in Contra Costa is a substantial figure, and it is often close to the premium that phasing adds. Ask for both scenarios priced, then decide with real numbers rather than assumptions.
What holds a whole-house project together
- One permit set, drawn properly. Whole-house work touches every trade and every inspector. Incomplete drawings on a project this size do not cause a small delay, they cause a cascade.
- A single point of accountability. On a project with fifteen trades, the value of a general contractor is scheduling and sequencing, not hammer swinging. Ask who is on site daily and who answers the phone.
- A written weekly schedule. Every week, what is happening, who is on site, what is needed from you.
- Selections finished before framing. Not before finish before framing. Where a shower valve goes, where blocking is needed, where the fridge water line runs are all framing decisions driven by finish selections.
- A change order process in writing. No verbal changes on a project of this length. Scope drift is the most common way whole-house budgets are exceeded.
Frequently asked questions
How much does a whole-house remodel cost in Concord?
Roughly $200,000 to $320,000 for a comprehensive refresh keeping the layout, $320,000 to $500,000 where walls move, and $500,000 upwards for a full gut with systems replacement. The condition of a 1950s–70s home’s electrical, plumbing and insulation matters more to the number than the finish level.
Is it cheaper to remodel all at once or in phases?
All at once is cheaper per unit of work, often by fifteen to twenty-five percent, because trades mobilise once and there is a single permit and inspection sequence. Phasing costs more overall but lets you stay in the house and spread the spend.
Do I have to move out for a whole-house remodel?
For a full gut, yes. For a phased project or a comprehensive refresh, usually not, with proper sequencing and dust containment. Price both scenarios before deciding six months of rent is often close to the premium phasing adds.
How long does a whole-house remodel take in Concord?
Four to seven months on site for a comprehensive refresh, seven to eleven months where layout changes, and ten to eighteen months for a full gut. Add design and permitting before any of that.
What contingency should I hold?
Ten to fifteen percent on a home built before 1980. Undersized electrical service, galvanised plumbing, missing insulation and seismic issues are all common in Concord’s housing stock and only become visible once the walls are open.
In what order should I phase the work?
Systems and structure first, then the kitchen, then bathrooms one at a time, then living and sleeping areas, then exterior and landscaping. Doing surfaces before systems means tearing out new work later.
